# Lycoming O-540-F1B5 - Type: Engine model (FAA registry) - Registry code: 42353 - Manufacturer (registry): LYCOMING - Model: O-540-F1B5 - Engine type: Reciprocating - Power: 260 hp - Data sheet: [TCDS E-295](https://openairdocs.org/tcds/E-295) (OpenAirDocs) - Holder: Lycoming Engines - Installed in: 299 registered aircraft - Page: https://openairdocs.org/engine/lycoming-o-540-f1b5 Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2026-17-10](https://openairdocs.org/ad/2026-17-10): Reciprocating Engine Cylinder Section · Lycoming Engines O-235, O-235-A, O-235-AP and 159 more. Effective Sep 14, 2026 - [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026 - [AD 2017-16-11](https://openairdocs.org/ad/2017-16-11): Reciprocating Engine Power Section · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-360-B1G6 and 93 more. Effective Aug 15, 2017 - [AD 2012-19-01](https://openairdocs.org/ad/2012-19-01): Crankshafts · Lycoming Engines AEIO-360-A1A, AEIO-360-A1B, AEIO-360-A1B6 and 321 more. Effective Oct 24, 2012 - [AD 2012-03-07](https://openairdocs.org/ad/2012-03-07): Carburetor · Lycoming Engines GO-435, GO-435-C2 (O-435-17), GO-435-C2A and 389 more. Effective Mar 27, 2012 - [AD 2009-26-12](https://openairdocs.org/ad/2009-26-12): Cylinder assemblies · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 264 more. Effective Feb 4, 2010 - [AD 2007-04-19 R1](https://openairdocs.org/ad/2007-04-19-R1): SAP cylinder assemblies · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 314 more. Effective May 7, 2007 - [AD 2006-12-07](https://openairdocs.org/ad/2006-12-07): ECi cylinder assemblies · Aerostar AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 386 more. Effective Jul 11, 2006 - [AD 2006-10-21](https://openairdocs.org/ad/2006-10-21): ECi connecting rods · Engine Components Reciprocating Engine Connecting Rods, AEIO-360-B1B, AEIO-360-B1D and 171 more. Effective Jun 22, 2006 - [AD 2005-19-11](https://openairdocs.org/ad/2005-19-11): Crankshafts · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 59 more. Effective Oct 21, 2005 - [AD 2005-12-06](https://openairdocs.org/ad/2005-12-06): Riveted-impulse coupling assemblies and snap-ring coupling assemblies · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 154 more. Effective Jul 19, 2005 - [AD 2004-10-14](https://openairdocs.org/ad/2004-10-14): Crankshaft gear · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 642 more. Effective Jun 25, 2004 - [AD 2004-05-24](https://openairdocs.org/ad/2004-05-24): Zinc-plated Crankshaft Gear Retaining Bolts · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 161 more. Effective Mar 30, 2004 - [AD 99-03-05](https://openairdocs.org/ad/99-03-05): Crankshaft Gear Retaining Bolts · Lycoming Engines O-540-F1B5. Effective Feb 18, 1999 - [AD 97-15-11](https://openairdocs.org/ad/97-15-11): Cylinder kits · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 538 more. Effective Aug 12, 1997 - [AD 96-09-10](https://openairdocs.org/ad/96-09-10): Oil pump · Lycoming Engines AEIO-320-E1A, AEIO-320-E1B, AEIO-320-E2A and 334 more. Effective Jul 15, 1996 - [AD 95-07-01](https://openairdocs.org/ad/95-07-01): Connecting Rod Bolt · Lycoming Engines AEIO-360-A1E, AEIO-360-B1G6, AEIO-360-H1A and 177 more. Effective Apr 12, 1995 - [AD 92-12-05](https://openairdocs.org/ad/92-12-05): Piston Pins · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 532 more. Effective Jul 10, 1992 - [AD 87-10-06 R1](https://openairdocs.org/ad/87-10-06-R1): Rocker Arm Assembly · Lycoming Engines IO-360-B4, IVO-360-A1A, O-340-A1A and 243 more. Effective Sep 1, 1989 - [AD 89-04-02](https://openairdocs.org/ad/89-04-02): Carburetors · Continental Motors O-470-11, O-470-11-CI, O-470-11B and 175 more. Effective Mar 8, 1989 - [AD 75-08-09](https://openairdocs.org/ad/75-08-09): Oil Pump Drive Shaft · Lycoming Engines AEIO-360-A1B, AEIO-360-A1B6, AEIO-360-A1C and 365 more. Effective Aug 18, 1977 - [AD 69-24-03](https://openairdocs.org/ad/69-24-03): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 321 more. Effective Nov 29, 1969 - [AD 66-06-03](https://openairdocs.org/ad/66-06-03): Connecting Rod Assemblies · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 317 more. Effective Jan 16, 1969 - [AD 66-20-04](https://openairdocs.org/ad/66-20-04): Oil Filter Adapter Gasket · Lycoming Engines IO-320-A1A, IO-320-A2A, IO-320-B1A and 121 more. Effective Aug 27, 1966 - [AD 64-16-05](https://openairdocs.org/ad/64-16-05): AC Pumps · Lycoming Engines HIO-360-B1A, HIO-360-B1B, IO-320-B1A and 86 more. Effective Jul 10, 1964 - [AD 63-22-03](https://openairdocs.org/ad/63-22-03): Carburetors · Continental Motors GO-300-A, GO-300-B, GO-300-C and 143 more. Effective Dec 2, 1963 - [AD 63-14-03](https://openairdocs.org/ad/63-14-03): Oil Pump Drive Shaft · Lycoming Engines IO-540-A1A5, IO-540-B1A5, IO-540-B1B5 and 21 more. Effective Jul 6, 1963 Historical (superseded or no longer in force): - [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 548 more. Effective Dec 5, 2024 - [AD 2008-19-05](https://openairdocs.org/ad/2008-19-05) (historical): Parallel Valve'' reciprocating engines · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 262 more. Effective Oct 20, 2008 - [AD 2006-20-09](https://openairdocs.org/ad/2006-20-09) (historical): Certain crankshafts replacing · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 82 more. Effective Nov 3, 2006 - [AD 2005-26-10](https://openairdocs.org/ad/2005-26-10) (historical): ECi cylinder assemblies. · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 413 more. Effective Jan 31, 2006 - [AD 81-18-04 R2](https://openairdocs.org/ad/81-18-04-R2) (historical): Engine Oil Pump Driven Impeller and Shaft · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 376 more. Effective Jun 7, 1982 ## Information bulletins (advisory) (6) - [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019 - [SAIB NE-08-32R1](https://openairdocs.org/saib/NE-08-32R1): Propeller Governor Idler Gear Shaft Set Screw. Issued May 13, 2016 - [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014 - [SAIB NE-13-06](https://openairdocs.org/saib/NE-13-06): Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320, 360, and 540 Series Engines. Issued Nov 21, 2012 - [SAIB NE-06-32R1](https://openairdocs.org/saib/NE-06-32R1): Reciprocating Engine - Crankshaft. Issued Sep 10, 2008 - [SAIB NE-08-32](https://openairdocs.org/saib/NE-08-32) (historical): Propeller Governor Set Screw. Issued Jul 3, 2008 ## Registered aircraft (299, first 50) - [N1019V](https://openairdocs.org/aircraft/N1019V): [Qualitair LLC Trustee](https://openairdocs.org/faa-owner/QUALITAIR%20LLC%20TRUSTEE), Michelstadt, S/N 1353 - [N102AF](https://openairdocs.org/aircraft/N102AF): [Mjm Enterprises LLC](https://openairdocs.org/faa-owner/MJM%20ENTERPRISES%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2007, S/N 1779 - [N102CV](https://openairdocs.org/aircraft/N102CV): [Pilot In Command LLC](https://openairdocs.org/faa-owner/PILOT%20IN%20COMMAND%20LLC), [Parker, CO](https://openairdocs.org/faa-place/CO/Parker), built 1999, S/N 0570 - [N104EG](https://openairdocs.org/aircraft/N104EG): [Spitzer Helicopter LLC](https://openairdocs.org/faa-owner/SPITZER%20HELICOPTER%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2013, S/N 2266 - [N109B](https://openairdocs.org/aircraft/N109B): [Rotorwing LLC](https://openairdocs.org/faa-owner/ROTORWING%20LLC), [Walnut, IL](https://openairdocs.org/faa-place/IL/Walnut), built 2007, S/N 1743 - [N111LE](https://openairdocs.org/aircraft/N111LE): [Sky Photoshop LLC](https://openairdocs.org/faa-owner/SKY%20PHOTOSHOP%20LLC), [Winter Garden, FL](https://openairdocs.org/faa-place/FL/Winter%20Garden), built 2025, S/N 2817 - [N116VK](https://openairdocs.org/aircraft/N116VK): [Airborne LLC](https://openairdocs.org/faa-owner/AIRBORNE%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2018, S/N 2547 - [N117BA](https://openairdocs.org/aircraft/N117BA): [Chopper Ag Services LLC](https://openairdocs.org/faa-owner/CHOPPER%20AG%20SERVICES%20LLC), [Samson, AL](https://openairdocs.org/faa-place/AL/Samson), built 2017, S/N 2512 - [N11RA](https://openairdocs.org/aircraft/N11RA): [Monkey Biziness LLC](https://openairdocs.org/faa-owner/MONKEY%20BIZINESS%20LLC), [Cherryville, NC](https://openairdocs.org/faa-place/NC/Cherryville), S/N 1951 - [N120AF](https://openairdocs.org/aircraft/N120AF): [Air First LLC](https://openairdocs.org/faa-owner/AIR%20FIRST%20LLC), [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell), built 1994, S/N 2055 - [N127DM](https://openairdocs.org/aircraft/N127DM): [Aircraft Leasing LLC](https://openairdocs.org/faa-owner/AIRCRAFT%20LEASING%20LLC), [Peoria, IL](https://openairdocs.org/faa-place/IL/Peoria), built 2017, S/N 30023 - [N128EH](https://openairdocs.org/aircraft/N128EH): [Jen Air LLC](https://openairdocs.org/faa-owner/JEN%20AIR%20LLC), [Greenwood, MS](https://openairdocs.org/faa-place/MS/Greenwood), built 2003, S/N 1305 - [N128KR](https://openairdocs.org/aircraft/N128KR): [Rogue Texan Outfitters LLC](https://openairdocs.org/faa-owner/ROGUE%20TEXAN%20OUTFITTERS%20LLC), [Skidmore, TX](https://openairdocs.org/faa-place/TX/Skidmore), built 1994, S/N 0047 - [N132TC](https://openairdocs.org/aircraft/N132TC): [Worthington Loren Daniel](https://openairdocs.org/faa-owner/WORTHINGTON%20LOREN%20DANIEL), [Caldwell, ID](https://openairdocs.org/faa-place/ID/Caldwell), built 2002, S/N 1259 - [N137TD](https://openairdocs.org/aircraft/N137TD): [Ww Flying Services LLC](https://openairdocs.org/faa-owner/WW%20FLYING%20SERVICES%20LLC), [Waller, TX](https://openairdocs.org/faa-place/TX/Waller), built 2013, S/N 2300 - [N141CD](https://openairdocs.org/aircraft/N141CD): [Sky Helicopters Inc](https://openairdocs.org/faa-owner/SKY%20HELICOPTERS%20INC), [Desoto, TX](https://openairdocs.org/faa-place/TX/Desoto), built 2023, S/N 30091 - [N144AF](https://openairdocs.org/aircraft/N144AF): [Helius Aircraft 144af LLC](https://openairdocs.org/faa-owner/HELIUS%20AIRCRAFT%20144AF%20LLC), [Conroe, TX](https://openairdocs.org/faa-place/TX/Conroe), built 2007, S/N 1787 - [N144AH](https://openairdocs.org/aircraft/N144AH): [Atomic Helicopters LLC](https://openairdocs.org/faa-owner/ATOMIC%20HELICOPTERS%20LLC), [Seattle, WA](https://openairdocs.org/faa-place/WA/Seattle), built 2001, S/N 0865 - [N144DJ](https://openairdocs.org/aircraft/N144DJ): [Saybrook Offshore LLC](https://openairdocs.org/faa-owner/SAYBROOK%20OFFSHORE%20LLC), [Guilford, CT](https://openairdocs.org/faa-place/CT/Guilford), built 2017, S/N 2467 - [N144JJ](https://openairdocs.org/aircraft/N144JJ): [Qcp Group LLC](https://openairdocs.org/faa-owner/QCP%20GROUP%20LLC), [Lafayette, LA](https://openairdocs.org/faa-place/LA/Lafayette), built 1999, S/N 0689 - [N150XT](https://openairdocs.org/aircraft/N150XT): [Rice John D](https://openairdocs.org/faa-owner/RICE%20JOHN%20D), [Maddock, ND](https://openairdocs.org/faa-place/ND/Maddock), built 2007, S/N 1746 - [N151CD](https://openairdocs.org/aircraft/N151CD): [Aloha Helicopter Tours LLC](https://openairdocs.org/faa-owner/ALOHA%20HELICOPTER%20TOURS%20LLC), [Lihue, HI](https://openairdocs.org/faa-place/HI/Lihue), built 2007, S/N 1705 - [N153WF](https://openairdocs.org/aircraft/N153WF): [Southern Aircraft Consultancy Inc Trustee](https://openairdocs.org/faa-owner/SOUTHERN%20AIRCRAFT%20CONSULTANCY%20INC%20TRUSTEE), [Casper, WY](https://openairdocs.org/faa-place/WY/Casper), built 1995, S/N 0152 - [N158CR](https://openairdocs.org/aircraft/N158CR): [A2heli LLC](https://openairdocs.org/faa-owner/A2HELI%20LLC), [Ann Arbor, MI](https://openairdocs.org/faa-place/MI/Ann%20Arbor), built 2017, S/N 2466 - [N159RP](https://openairdocs.org/aircraft/N159RP): [Headings Norman D](https://openairdocs.org/faa-owner/HEADINGS%20NORMAN%20D), [Walnut, IL](https://openairdocs.org/faa-place/IL/Walnut), built 1997, S/N 0342 - [N161CM](https://openairdocs.org/aircraft/N161CM): [R&J Helicopters LLC](https://openairdocs.org/faa-owner/R%26J%20HELICOPTERS%20LLC), [Port Byron, IL](https://openairdocs.org/faa-place/IL/Port%20Byron), built 2016, S/N 2444 - [N164SA](https://openairdocs.org/aircraft/N164SA): [Olson Helicopters LLC](https://openairdocs.org/faa-owner/OLSON%20HELICOPTERS%20LLC), [Corpus Christi, TX](https://openairdocs.org/faa-place/TX/Corpus%20Christi), built 2006, S/N 1559 - [N165SU](https://openairdocs.org/aircraft/N165SU): [Beckett David](https://openairdocs.org/faa-owner/BECKETT%20DAVID), [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla), built 2020, S/N 30074 - [N167SU](https://openairdocs.org/aircraft/N167SU): [Southern Utah University](https://openairdocs.org/faa-owner/SOUTHERN%20UTAH%20UNIVERSITY), [Cedar City, UT](https://openairdocs.org/faa-place/UT/Cedar%20City), built 2020, S/N 30064 - [N168AV](https://openairdocs.org/aircraft/N168AV): [Ace Helicopters LLC](https://openairdocs.org/faa-owner/ACE%20HELICOPTERS%20LLC), [Colfax, WI](https://openairdocs.org/faa-place/WI/Colfax), built 2008, S/N 1968 - [N169CS](https://openairdocs.org/aircraft/N169CS): [Chavi LLC](https://openairdocs.org/faa-owner/CHAVI%20LLC), [Fredericksburg, TX](https://openairdocs.org/faa-place/TX/Fredericksburg), built 2015, S/N 2407 - [N171WT](https://openairdocs.org/aircraft/N171WT): [B&B Aero LLC](https://openairdocs.org/faa-owner/B%26B%20AERO%20LLC), [Arlington, MA](https://openairdocs.org/faa-place/MA/Arlington), built 2009, S/N 2064 - [N17EM](https://openairdocs.org/aircraft/N17EM): [Segerstrom Ricky G Trustee](https://openairdocs.org/faa-owner/SEGERSTROM%20RICKY%20G%20TRUSTEE), [Grandview, TX](https://openairdocs.org/faa-place/TX/Grandview), built 2006, S/N 1580 - [N181AF](https://openairdocs.org/aircraft/N181AF): [Smoketown Helicopters LLC](https://openairdocs.org/faa-owner/SMOKETOWN%20HELICOPTERS%20LLC), [Smoketown, PA](https://openairdocs.org/faa-place/PA/Smoketown), built 2010, S/N 2100 - [N181MB](https://openairdocs.org/aircraft/N181MB): [Spitzer Helicopter LLC](https://openairdocs.org/faa-owner/SPITZER%20HELICOPTER%20LLC), [Woodland Hills, CA](https://openairdocs.org/faa-place/CA/Woodland%20Hills), built 2016, S/N 2425 - [N183PS](https://openairdocs.org/aircraft/N183PS): [Hc02 LLC](https://openairdocs.org/faa-owner/HC02%20LLC), [Vero Beach, FL](https://openairdocs.org/faa-place/FL/Vero%20Beach), built 2014, S/N 2328 - [N187JH](https://openairdocs.org/aircraft/N187JH): [Southern Ag Helicopter Services LLC](https://openairdocs.org/faa-owner/SOUTHERN%20AG%20HELICOPTER%20SERVICES%20LLC), [Zebulon, NC](https://openairdocs.org/faa-place/NC/Zebulon), built 1995, S/N 0203 - [N189MX](https://openairdocs.org/aircraft/N189MX): [L&W Holdings LLC](https://openairdocs.org/faa-owner/L%26W%20HOLDINGS%20LLC), [North Fort Myers, FL](https://openairdocs.org/faa-place/FL/North%20Fort%20Myers), built 2012, S/N 2194 - [N18EK](https://openairdocs.org/aircraft/N18EK): [Krahenbuhl Edward L Trustee](https://openairdocs.org/faa-owner/KRAHENBUHL%20EDWARD%20L%20TRUSTEE), [Waldport, OR](https://openairdocs.org/faa-place/OR/Waldport), built 2018, S/N 30042 - [N1953R](https://openairdocs.org/aircraft/N1953R): [Smith Helicopters Inc](https://openairdocs.org/faa-owner/SMITH%20HELICOPTERS%20INC), [Cotulla, TX](https://openairdocs.org/faa-place/TX/Cotulla), S/N 30018 - [N197HL](https://openairdocs.org/aircraft/N197HL): [Cedar Ridge Aviation LLC](https://openairdocs.org/faa-owner/CEDAR%20RIDGE%20AVIATION%20LLC), [Knox City, TX](https://openairdocs.org/faa-place/TX/Knox%20City), built 2004, S/N 1386 - [N202BR](https://openairdocs.org/aircraft/N202BR): [Rc Aviation LLC](https://openairdocs.org/faa-owner/RC%20AVIATION%20LLC), [Ladysmith, WI](https://openairdocs.org/faa-place/WI/Ladysmith), built 2020, S/N 2616 - [N202WT](https://openairdocs.org/aircraft/N202WT): [Engstad Kai](https://openairdocs.org/faa-owner/ENGSTAD%20KAI), [Gig Harbor, WA](https://openairdocs.org/faa-place/WA/Gig%20Harbor), built 2008, S/N 1847 - [N211TB](https://openairdocs.org/aircraft/N211TB): [Steinbach Philipp](https://openairdocs.org/faa-owner/STEINBACH%20PHILIPP), [Bentonville, AR](https://openairdocs.org/faa-place/AR/Bentonville), built 2011, S/N 2106 - [N21279](https://openairdocs.org/aircraft/N21279): [Kerry Air LLC](https://openairdocs.org/faa-owner/KERRY%20AIR%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2016, S/N 2448 - [N212LS](https://openairdocs.org/aircraft/N212LS): [Heli Ag LLC](https://openairdocs.org/faa-owner/HELI%20AG%20LLC), [Waller, TX](https://openairdocs.org/faa-place/TX/Waller), built 2006, S/N 1650 - [N212PD](https://openairdocs.org/aircraft/N212PD): [Grossman Steven J](https://openairdocs.org/faa-owner/GROSSMAN%20STEVEN%20J), [Amherst, NH](https://openairdocs.org/faa-place/NH/Amherst), built 2008, S/N 1895 - [N213SF](https://openairdocs.org/aircraft/N213SF): [Seaton Flying Services](https://openairdocs.org/faa-owner/SEATON%20FLYING%20SERVICES), [Killeen, TX](https://openairdocs.org/faa-place/TX/Killeen), built 2005, S/N 1534 - [N217DK](https://openairdocs.org/aircraft/N217DK): [Hawaii Pacific Aviation Inc](https://openairdocs.org/faa-owner/HAWAII%20PACIFIC%20AVIATION%20INC), [Kailua Kona, HI](https://openairdocs.org/faa-place/HI/Kailua%20Kona), built 2018, S/N 2556 - [N225ML](https://openairdocs.org/aircraft/N225ML): [Seaton Flying Services](https://openairdocs.org/faa-owner/SEATON%20FLYING%20SERVICES), [Killeen, TX](https://openairdocs.org/faa-place/TX/Killeen), built 2007, S/N 1810 All 299: https://openairdocs.org/engine/lycoming-o-540-f1b5/aircraft.md ## NTSB investigations (73, newest 50) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB ERA27LA017](https://openairdocs.org/ntsb/ERA27LA017), Oct 20, 2026: Robinson Helicopter R44 (N744CJ), Kinnelon, NJ, investigation ongoing - [NTSB ANC26LA082](https://openairdocs.org/ntsb/ANC26LA082), Aug 9, 2026: Robinson Helicopter R44 (N197HL), Macedonia, IA, substantial damage, investigation ongoing - [NTSB CEN26LA289](https://openairdocs.org/ntsb/CEN26LA289), Jul 18, 2026: Robinson Helicopter R44 Raven 1 (N26EH), Scribner, NE, substantial damage. Probable cause: The pilot's failure to maintain clearance from power lines while maneuvering at low-level altitude during an agricultural operation. - [NTSB CEN26LA259](https://openairdocs.org/ntsb/CEN26LA259), Jul 18, 2026: Robinson Helicopter R44 (N484AT), Adair, IA, substantial damage, investigation ongoing - [NTSB ANC26LA051](https://openairdocs.org/ntsb/ANC26LA051), Jun 13, 2026: Robinson R44 (N336SG), Pembroke Pines, FL, substantial damage, investigation ongoing - [NTSB ERA26LA048](https://openairdocs.org/ntsb/ERA26LA048), Nov 14, 2025: Robinson Helicopter R44 (N668TM), Cookeville, TN, substantial damage. Probable cause: The pilot’s failure to maintain an appropriate decent rate during approach, resulting in a hard landing. - [NTSB CEN24LA343](https://openairdocs.org/ntsb/CEN24LA343), Sep 6, 2024: Robinson Helicopter R44 (N896J), Grand Forks, ND, substantial damage. Probable cause: The student pilot’s failure to maintain helicopter control which resulted in impact with the ground. Contributing to the outcome was the flight instructor’s delayed remedial action. - [NTSB ANC24LA077](https://openairdocs.org/ntsb/ANC24LA077), Aug 19, 2024: Robinson R44 (N740RH), Honolulu, HI, substantial damage. Probable cause: A failure of the flex plate yoke flange assembly due to incorrectly torqued bolts. Contributing was the maintenance personnel’s inadequate inspection of the tail rotor flex plate assembly. - [NTSB CEN24LA303](https://openairdocs.org/ntsb/CEN24LA303), Aug 3, 2024: Robinson Helicopter R44 (N225ML), Bryant, IA, substantial damage. Probable cause: A loss of engine power during takeoff for reasons that could not be determined, resulting in impact with terrain. - [NTSB WPR24LA251](https://openairdocs.org/ntsb/WPR24LA251), Jul 18, 2024: Robinson Helicopter R44 (N886JB), Carlsbad, CA, substantial damage. Probable cause: The pilot’s failure to maintain lateral control of the helicopter while departing with a crosswind, which resulted in a dynamic rollover. - [NTSB ERA24LA166](https://openairdocs.org/ntsb/ERA24LA166), Apr 6, 2024: Robinson Helicopter R44 (N234ZT), Key Biscayne, FL, substantial damage. Probable cause: A loss of engine power for reasons that could not be determined. - [NTSB GAA24WA123](https://openairdocs.org/ntsb/GAA24WA123), Mar 20, 2024: Robinson Helicopter R44 (N5050), Suben, Austria, substantial damage - [NTSB CEN24LA135](https://openairdocs.org/ntsb/CEN24LA135), Mar 13, 2024: Robinson Helicopter R44 (N3040P), Knox City, TX, substantial damage. Probable cause: The pilot’s failure to maintain directional control during takeoff, which resulted in a rollover and an impact with terrain. - [NTSB ERA24LA079](https://openairdocs.org/ntsb/ERA24LA079), Dec 30, 2023: Robinson Helicopter R44 (N828AK), Daytona Beach, FL, substantial damage. Probable cause: The UAS operator’s failure to operate within the limitations of the COA that he was using to operate inside class C airspace, which resulted in a collision between the UAS and the helicopter. - [NTSB OPS24LA011](https://openairdocs.org/ntsb/OPS24LA011), Dec 9, 2023: Robinson Helicopter R44 (N744AF), North Las Vegas, NV, incident, no damage. Probable cause: The local controller’s loss of situational awareness, inadequate provision of traffic advisory or safety alert information, and lack of positive control, that resulted in a near-midair collision. - [NTSB CEN24LA027](https://openairdocs.org/ntsb/CEN24LA027), Oct 26, 2023: Robinson Helicopter R44 (N141CD), Rowlett, TX, substantial damage. Probable cause: A malfunction of the helicopter’s Engine Monitoring Unit (EMU)/Governor Controller for undetermined reasons. Contributing to the accident was the flight instructor’s failure to turn off the… - [NTSB CEN24LA004](https://openairdocs.org/ntsb/CEN24LA004), Oct 1, 2023: Robinson Helicopter R44 (N379SH), Hochatown, OK, substantial damage. Probable cause: A total loss of engine power during a practice autorotation due to the improper engine idle setting and rigging of the carburetor heat control which resulted in a hard landing. - [NTSB ERA23LA350](https://openairdocs.org/ntsb/ERA23LA350), Aug 26, 2023: Robinson Helicopter R44 (N4147Q), Immokalee, FL, substantial damage. Probable cause: The flight instructor’s inadequate supervision of the student pilot during hover flight, which resulted in main rotor blade contact with the ground after the student pilot applied a sudden control… - [NTSB CEN23LA328](https://openairdocs.org/ntsb/CEN23LA328), Jul 26, 2023: Robinson Helicopter R44 (N467HA), Hanlontown, IA, substantial damage. Probable cause: The pilot’s failure to maintain clearance from a cable during spray operations. - [NTSB CEN23LA219](https://openairdocs.org/ntsb/CEN23LA219), May 31, 2023: Robinson Helicopter R44 (N7102Z), Pontiac, MI, substantial damage. Probable cause: The flight crew’s inadequate compensation for gusting wind, and the flight instructor’s delayed remedial action, which resulted in impact with the ground. - [NTSB CEN23LA130](https://openairdocs.org/ntsb/CEN23LA130), Mar 11, 2023: Robinson Helicopter R44 (N4164T), De Kalb, TX, substantial damage. Probable cause: The pilot’s inability to maintain control of the helicopter due to his failure to maintain rotor speed. Contributing to the accident was the failure of the helicopter’s low rotor speed warning system. - [NTSB WPR23LA041](https://openairdocs.org/ntsb/WPR23LA041), Nov 18, 2022: Robinson Helicopter R44 (N4050P), Las Vegas, NV, minor damage. Probable cause: The student helicopter pilot’s failure to follow the tower controller’s landing instructions, which resulted in a midair collision. - [NTSB ERA23LA021](https://openairdocs.org/ntsb/ERA23LA021), Oct 14, 2022: Robinson Helicopter R44 (N306MB), Daytona Beach, FL, substantial damage. Probable cause: The pilot’s misjudged landing point which resulted in a loss of control and collision with terrain. - [NTSB WPR22LA363](https://openairdocs.org/ntsb/WPR22LA363), Sep 30, 2022: Robinson Helicopter R44 (N297SU), Cedar City, UT, substantial damage. Probable cause: A partial loss of engine power due to a damaged cylinder intake valve and subsequent collision with terrain during an autorotation. - [NTSB ERA22LA357](https://openairdocs.org/ntsb/ERA22LA357), Aug 3, 2022: Robinson Helicopter R44 (N45CA), Leghighton, PA, substantial damage. Probable cause: The pilot’s improper recovery from a bounced landing on a slope, which resulted in dynamic rollover. - [NTSB ERA22LA256](https://openairdocs.org/ntsb/ERA22LA256), May 26, 2022: Robinson Helicopter R44 (N132TC), North Myrtle Beach, SC, substantial damage. Probable cause: The fractured attachment lug on the forward clutch shaft yoke due to fatigue failure with multiple origins. - [NTSB CEN22FA151](https://openairdocs.org/ntsb/CEN22FA151), Mar 25, 2022: Robinson Helicopter R44 (N514CD), Rowlett, TX, destroyed, 2 fatal. Probable cause: A loss of helicopter control while maneuvering, which resulted in main rotor blade contact with the tailboom in flight, tail boom separation, and an uncontrolled descent. - [NTSB ERA22LA131](https://openairdocs.org/ntsb/ERA22LA131), Feb 19, 2022: Robinson Helicopter R44 (N544SB), Miami Beach, FL, substantial damage. Probable cause: A loss of engine power due to a stuck valve, which resulted in an autorotation and a hard landing in water. - [NTSB CEN21LA350](https://openairdocs.org/ntsb/CEN21LA350), Aug 4, 2021: Robinson Helicopter R44 (N775AK), Waukon, IA, substantial damage. Probable cause: The pilot’s failure to maintain adequate clearance from a powerline during an agricultural application pass. - [NTSB CEN21LA452](https://openairdocs.org/ntsb/CEN21LA452), Jul 20, 2021: Robinson Helicopter R44 (N44XB), Mineral Point, WI, substantial damage. Probable cause: The pilot’s failure to see and avoid a wire during an aerial application flight, resulting in a collision with the wire. - [NTSB ERA21FA200](https://openairdocs.org/ntsb/ERA21FA200), May 2, 2021: Robinson Helicopter R44 (N4528T), Wingate, NC, substantial damage, 1 fatal. Probable cause: The pilot’s failure to maintain clearance from a power line during a low-level aerial application flight, resulting in tail rotor impact with the power line, a loss of control, and subsequent impact… - [NTSB ERA21LA191](https://openairdocs.org/ntsb/ERA21LA191), Apr 23, 2021: Robinson Helicopter R44 (N4055N), Forkston, PA, destroyed, 1 fatal. Probable cause: The pilot’s inadequate preflight weather planning, which resulted in an inadvertent encounter with instrument meteorological conditions at night, spatial disorientation, and collision with terrain. - [NTSB CEN21LA095](https://openairdocs.org/ntsb/CEN21LA095), Dec 20, 2020: Robinson Helicopter R44 (N3264U), Morris, IL, substantial damage. Probable cause: The pilot's inadequate pedal application during liftoff with a tailwind, which resulted in a loss of yaw control and a subsequent impact with terrain. - [NTSB CEN21LA084](https://openairdocs.org/ntsb/CEN21LA084), Dec 10, 2020: Robinson R44 (N7085Z), Colorado City, TX, destroyed, 2 fatal. Probable cause: The pilot’s loss of control and exceedance of performance and/or structural limitations during low-altitude operations, which resulted in an inflight breakup.. Contributing to the accident was the… - [NTSB CEN20CA313](https://openairdocs.org/ntsb/CEN20CA313), Jul 27, 2020: Robinson R44 (N570WH), Dakota, IL, substantial damage. Probable cause: The pilot’s failure to maintain main rotor clearance from a ground obstacle during a landing. - [NTSB ERA20CA260](https://openairdocs.org/ntsb/ERA20CA260), Jul 24, 2020: Robinson R44 (N350DM), Whitehall, MD, substantial damage. Probable cause: The pilot's failure to maintain adequate clearance from a known obstacle while landing from a hover. - [NTSB CEN20CA300](https://openairdocs.org/ntsb/CEN20CA300), Jul 20, 2020: Robinson R44 (N570WH), Dickeyville, WI, substantial damage. Probable cause: The pilot did not maintain clearance from wires during an aerial application flight. - [NTSB CEN20LA286](https://openairdocs.org/ntsb/CEN20LA286), Jul 2, 2020: Robinson R44 (N7511D), Welsh, LA, substantial damage. Probable cause: A partial loss of engine power while in flight due to corrosion of engine components, which resulted in a loss of control and a subsequent impact with terrain. - [NTSB GAA19CA509](https://openairdocs.org/ntsb/GAA19CA509), Aug 21, 2019: Robinson R44 (N7186P), Cypress Island, WA, substantial damage. Probable cause: The pilot's failure to maintain adequate clearance from a tree while maneuvering at a low altitude. - [NTSB CEN19LA230](https://openairdocs.org/ntsb/CEN19LA230), Jul 21, 2019: Robinson R44 (N459TA), Ida Grove, IA, substantial damage. Probable cause: A total loss of engine power during an aerial application flight for undetermined reasons. - [NTSB CEN19LA174](https://openairdocs.org/ntsb/CEN19LA174), Jun 17, 2019: Robinson R44 (N1241W), Key West, FL, substantial damage. Probable cause: The failure of maintenance personnel to properly secure the right-side tail boom mounting bolts which resulted in the failure of the bolts and an inflight separation of the tail rotor. - [NTSB WPR19FA123](https://openairdocs.org/ntsb/WPR19FA123), Apr 29, 2019: Robinson R44 (N808NV), Kailua, HI, destroyed, 3 fatal. Probable cause: The helicopter’s encounter with a strong downdraft or outflow boundary while operating at a higher than recommended airspeed in turbulence which resulted in a low-G condition, excessive main rotor… - [NTSB GAA19CA124](https://openairdocs.org/ntsb/GAA19CA124), Jan 2, 2019: Robinson R44 (N772MG), Santa Maria Island, FL, substantial damage. Probable cause: The pilot's loss of helicopter control while maneuvering at a low altitude after being struck in the head by a bird. - [NTSB GAA19CA063](https://openairdocs.org/ntsb/GAA19CA063), Nov 18, 2018: Robinson R44 (N4167Y), Knox City, TX, substantial damage. Probable cause: The pilot's failure to maintain adequate airspeed with a tailwind, which resulted in the helicopter settling with power, and his subsequent incorrect collective application while attempting to… - [NTSB WPR19LA013](https://openairdocs.org/ntsb/WPR19LA013), Oct 23, 2018: Robinson R44 (N4132H), Kaneohe, HI, substantial damage. Probable cause: The pilot’s sudden incapacitation from an undiagnosed heart condition during flight, which resulted in a hard landing. - [NTSB WPR18LA269](https://openairdocs.org/ntsb/WPR18LA269), Sep 18, 2018: Robinson R44 (N632NV), Wahiawa, HI, substantial damage. Probable cause: Loss of oil in flight as a result of a loose oil filter adapter which resulted in the pilot initiating an immediate landing to an open field. Contributing to the accident was the pilot's manipulation… - [NTSB GAA18CA450](https://openairdocs.org/ntsb/GAA18CA450), Jul 27, 2018: Robinson R44 (N479AT), Lantana, FL, substantial damage. Probable cause: The student pilot’s improper pitch control during landing, which resulted in a dynamic rollover. - [NTSB GAA18CA408](https://openairdocs.org/ntsb/GAA18CA408), Jul 10, 2018: Robinson R44 (N144DJ), Rulo, NE, substantial damage. Probable cause: The pilot's improper collective application, which resulted in low rotor rpm during the takeoff climb and a subsequent ground collision. Contributing to the accident was the pilot’s self-induced… - [NTSB CEN18FA215](https://openairdocs.org/ntsb/CEN18FA215), Jun 9, 2018: Robinson Helicopter R44 (N529DW), Oshkosh, WI, substantial damage, 1 fatal. Probable cause: The pilot's decision to fly over the river at a low altitude and his failure to maintain clearance with wires during low-level flight. - [NTSB GAA18CA247](https://openairdocs.org/ntsb/GAA18CA247), Apr 18, 2018: Robinson Helicopter R44 (N4487D), Sonora, TX, substantial damage. Probable cause: The pilot’s failure to maintain clearance from trees while maneuvering at a low altitude. All 73: https://openairdocs.org/engine/lycoming-o-540-f1b5/ntsb.md ## FAA accident and incident reports (84, newest 50) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 20260809012429A](https://openairdocs.org/incident/20260809012429A), Aug 9, 2026: Robinson Helicopter R44 (N197HL), Macedonia, IA, Substantial damage. Aircraft failed to maintain a positive rate-of-climb and adequate rotor RPM after takeoff from the tender truck resulting in hard landing in corn field. - [Accident 20260718010589A](https://openairdocs.org/incident/20260718010589A), Jul 18, 2026: Robinson Helicopter R44 (N26EH), Scribner, NE, Substantial damage. Pilot struck a power line while pollinating a field with a rotorcraft 2 nautical miles northwest of kscb resulting in damage to the main rotor blades and… - [Accident 20260718009219A](https://openairdocs.org/incident/20260718009219A), Jul 18, 2026: Robinson Helicopter R44 (N484AT), Adair, IA, Substantial damage. Pilot-in-command drooped rotor RPM while performing aerial application, then initiated an autorotation from a low altitude into a cornfield. Upon the main… - [Accident 20260613008149A](https://openairdocs.org/incident/20260613008149A), Jun 13, 2026: Robinson Helicopter R44 (N336SG), Pembroke Pines, FL, Destroyed. Robinson R-44 rotorcraft [privacy data omitted] attempting to takeoff lost control impacted the ground and another parked Cessna 421C [privacy data omitted]… - [Accident 20251114018119A](https://openairdocs.org/incident/20251114018119A), Nov 14, 2025: Robinson Helicopter R44 (N668TM), Cookeville, TN, Substantial damage. On November 15, at approximately 16:15 CST, the pilot arrived at the aircraft and conducted a full preflight inspection of the Robinson R44 R1 in accordance… - [Accident 20240906011949A](https://openairdocs.org/incident/20240906011949A), Sep 6, 2024: Robinson Helicopter R44 (N896J), Grand Forks, ND, Substantial damage. The aircraft doing hover practice in the delta landing zone area at gfk airport. Video evidence shows the aircraft in a stable hover then the aircraft is seen… - [Accident 20240818010729A](https://openairdocs.org/incident/20240818010729A), Aug 18, 2024: Robinson Helicopter R44 (N740RH), Honolulu, HI, Substantial damage. On Sunday, aug 18, 2024, pilot boarded Robinson R44 with intent to fly customers on a scheduled air tour. Pilot started engine and engaged the clutch as the… - [Accident 20240803018919A](https://openairdocs.org/incident/20240803018919A), Aug 3, 2024: Robinson Helicopter R44 (N225ML), Bryant, IA, Substantial damage. Pilot reported decrease in rotor RPM shortly after lifting off from tender truck. Helicopter contacted terrain causing it to roll on its side. - [Incident 20240802010449I](https://openairdocs.org/incident/20240802010449I), Aug 2, 2024: Robinson Helicopter R44 (N287LH), Philadelphia, PA, No damage. On a night, VFR cross country flight from ewr - phl the pilot claimed he encountered unforeseen headwinds which increased his planned flying time. The "low… - [Accident 20240718013149A](https://openairdocs.org/incident/20240718013149A), Jul 18, 2024: Robinson Helicopter R44 (N886JB), Carlsbad, CA, Substantial damage. Pilot lifted aircraft off helicopter platform for third solo flight. As collective was raised aircraft immediately went into dynamic rollover, slid off right… - [Accident 20240406004099A](https://openairdocs.org/incident/20240406004099A), Apr 6, 2024: Robinson Helicopter R44 (N234ZT), Key Biscayne, FL, Destroyed. Part 91 operation Robinson R44, registration [privacy data omitted] serial number 30027 departing miami executive airport (ktmb) to eleuthera Bahamas, with one… - [Accident 20240313002029A](https://openairdocs.org/incident/20240313002029A), Mar 13, 2024: Robinson Helicopter R44 (N3040P), Knox City, TX, Substantial damage. On March 13, 2024, at approximately 1200, a Robinson R44 helicopter, was involved in a dynamic rollover during takeoff at the Knox City, Texas airport (F85).… - [Accident 20231230020052A](https://openairdocs.org/incident/20231230020052A), Dec 30, 2023: Robinson Helicopter R44 (N828AK), Daytona Beach, FL, Substantial damage. December 30, 2023, 1400 local time; a helicopeter, R-44, returning from an air tour operation, part 91, with one pilot and two passengers on board and during… - [Incident 20231028015349I](https://openairdocs.org/incident/20231028015349I), Oct 28, 2023: Robinson R44 (N328SS), Hnl, HI, No damage. Robinson R44 conducting part 135 flight out of Hnl; pilot noted high manifold pressure required after take off and performed precautionary landing off airport.… - [Accident 20231026021019A](https://openairdocs.org/incident/20231026021019A), Oct 26, 2023: Robinson Helicopter R44 (N141CD), Rowlett, TX, Substantial damage. On 10/26/2023 at approximately 4:15PM an R-44 helicopter [privacy data omitted] departed the Garland heliport (hqz) and proceeded on a pilot training flight.… - [Accident 20231001014119A](https://openairdocs.org/incident/20231001014119A), Oct 1, 2023: Robinson Helicopter R44 (N379SH), Hochatown, OK, Substantial damage. After departing a private heliport in Hochatown, OK the pilot maneuvered the aircraft at 400 feet AGL to practice an auto-rotation maneuver in a field 0.3… - [Accident 20230826013719A](https://openairdocs.org/incident/20230826013719A), Aug 26, 2023: Robinson Helicopter R44 (N4147Q), Immokalee, FL, Destroyed. Part 61 operation, 2008 Robinson Helicopter R44 serial number 1844, [privacy data omitted], registered to [privacy data omitted]a demonstration flight R44… - [Accident 20230726008039A](https://openairdocs.org/incident/20230726008039A), Jul 26, 2023: Robinson Helicopter R44 (N467HA), Hanlontown, IA, Substantial damage. Shortly after entering first application run, pilot noticed powerline crossing his flight path about 20 feet ahead. Following the wire strike, pilot performed… - [Accident 20230531010789A](https://openairdocs.org/incident/20230531010789A), May 31, 2023: Robinson Helicopter R44 (N7102Z), Waterford, MI, Substantial damage. Pilot was instructing hover techniques and retook flight controls and failed to notice a rearward moment imparted by the student. The helicopter tail hit the… - [Accident 20230310002819A](https://openairdocs.org/incident/20230310002819A), Mar 10, 2023: Robinson Helicopter R44 (N4164T), Dekalb, TX, Substantial damage. On a feral hogs hunting trip, PIC reported a loss of power forced him to make an emergency landing. - [Accident 20221118021912A](https://openairdocs.org/incident/20221118021912A), Nov 18, 2022: Robinson Helicopter R44 (N4050P), North Las Vegas, NV, Substantial damage. On 11/18/22 at approximately 1027PST, [privacy data omitted], a 1973 Cessna 172M airplane, was conducting pattern operations on runway 30R, at the North Las… - [Accident 20221014017499A](https://openairdocs.org/incident/20221014017499A), Oct 14, 2022: Robinson Helicopter R44 (N306MB), Daytona Beach, FL, Substantial damage. The pilot was attempting to land on a moveable platform for the first time. The pilot stated and video showed he aborted his first attempt after he failed to… - [Accident 20220930011209A](https://openairdocs.org/incident/20220930011209A), Sep 30, 2022: Robinson Helicopter RH44 (N297SU), Cedar City, UT, Substantial damage. A CFI and student pilot were performing an off-field landing. As they were approaching the landing spot the CFI had the student practicing orbits. A high… - [Accident 20220803014039A](https://openairdocs.org/incident/20220803014039A), Aug 3, 2022: Robinson Helicopter R44 (N45CA), Lehighton, PA, Substantial damage. Accident summary: 08/03/2022, 13:00 EDT,[privacy data omitted], R-44, [privacy data omitted] was involved in a dynamic rollover accident while attempting to… - [Accident 20220526008639A](https://openairdocs.org/incident/20220526008639A), May 26, 2022: Robinson Helicopter R44 (N132TC), North Myrtle Be, SC, Substantial damage. After landing on runway 5 at cre the student lifted the helicopter into a hover. A loud bang was heard and the instructor took control and put the helicopter… - [Accident 20220325004299A](https://openairdocs.org/incident/20220325004299A), Mar 25, 2022: Robinson Helicopter R44 (N514CD), Rowlett, TX, Destroyed, 2 fatal. On 3/25/2022 at approximately 1127HRS ctd a Robinson R-44 helicopter sn 30007 registered as N514CD suffered a tail boom/rotor separation at approximately 1600?… - [Accident 20220219002139A](https://openairdocs.org/incident/20220219002139A), Feb 19, 2022: Robinson Helicopter R44 (N544SB), Miami, FL, Destroyed. Part 91ROBINSON helicopter R44, registration N544SB, serial number 1759 departed marathon heliport (2FD5) with one pilot and two-passenger to north perry… - [Accident 20210804012999A](https://openairdocs.org/incident/20210804012999A), Aug 4, 2021: Robinson Helicopter R44 (N775AK), Waukon, IA, Substantial damage. Pilot hit electrical wires. Crashed in field close to the road - [Accident 20210720014179A](https://openairdocs.org/incident/20210720014179A), Jul 20, 2021: Robinson Helicopter R44 (N44XB), Mineral Point, WI, Substantial damage. Mineral Point, WI: N44XB, R44, while conducting spraying-cropdusting, hit a power line, causing the sprayer to detach from the acft. Pilot made a forced… - [Accident 20210502008779A](https://openairdocs.org/incident/20210502008779A), May 2, 2021: Robinson Helicopter R44 (N4528T), Wingate, NC, Substantial damage, 1 fatal. On may 2, 2021, at 1318 eastern daylight time, a Robinson R-44 helicopter, N4528T, was substantially damaged when it was involved in an accident near Wingate,… - [Accident 20210422009659A](https://openairdocs.org/incident/20210422009659A), Apr 22, 2021: Robinson Helicopter R44 (N4055N), Forkston, PA, Destroyed, 1 fatal. The accident flight departed allentown queen city municipal airport (xll) at approximately 20:10 local time enroute to bradford county airport (N27).… - [Accident 20201220019289A](https://openairdocs.org/incident/20201220019289A), Dec 20, 2020: Robinson Helicopter R44 (N3264U), Morris, IL, Destroyed. Time of accident 1645 local (2245 z). ASOS data shows wind at 1615 local (2215 z) as 250 degrees @ 7 k, no gusts. ASOS data shows wind at 1635 local (2235 z)… - [Accident 20201210015319A](https://openairdocs.org/incident/20201210015319A), Dec 10, 2020: Robinson Helicopter R44 (N7085Z), Colorado City, TX, Destroyed, 2 fatal. On December 10, 2020 at approximately 0930, a Robinson R44 aircraft bearing registration number N7085Z, [privacy data omitted] impacted terrain after an… - [Accident 20200727011019A](https://openairdocs.org/incident/20200727011019A), Jul 27, 2020: Robinson Helicopter R44 (N570WH), Dakota, IL, Substantial damage. Upon landing near agriculture tender trailer, pilot lowered the skids to the ground, lowered collective and reduced power. As the rotor blades started to… - [Accident 20200724009999A](https://openairdocs.org/incident/20200724009999A), Jul 24, 2020: Robinson Helicopter R44 (N350DM), White Hall, MD, Substantial damage. On 07/24/2020 at approximately 6:30 pm local time, at a farm near White Hall, MD, [privacy data omitted] was acting as pilot in command of his Robinson R-44… - [Accident 20200720008839A](https://openairdocs.org/incident/20200720008839A), Jul 20, 2020: Robinson Helicopter R44 (N570WH), Dickeyville, WI, Substantial damage. On July 20, 2020 at 1340 CST, a Robinson R44 helicopter N570WH was conducting an agricultural application flight over a field near Dickeyville WI. The pilot… - [Incident 20200717008859I](https://openairdocs.org/incident/20200717008859I), Jul 17, 2020: Robinson Helicopter R44 (N7089G), Samson, AL, Minor damage. While conducting aerial application operations the helicopter impacted a low hanging wire. The wire scratched the windscreen and damaged the main rotor mast… - [Accident 20200702017359A](https://openairdocs.org/incident/20200702017359A), Jul 2, 2020: Robinson Helicopter R44 (N7511D), Welsh, LA, Destroyed. The nstb stated the crash happened on July 2, 2020 and they had just been notified. Speaking with the NTSB the event was discussed of a helicopter N7511D that… - [Incident 20191113021179I](https://openairdocs.org/incident/20191113021179I), Nov 13, 2019: Robinson Helicopter R44 (N828AK), Tampa, FL, Minor damage. On November 13, 2019, at approximately 1730 local time N828AK experienced an "eng fire" warning light while in flight. N828AK was conducting a sightseeing… - [Accident 20190820016829A](https://openairdocs.org/incident/20190820016829A), Aug 20, 2019: Robinson Helicopter R44 (N7186P), Cypress Island, WA, Destroyed. While operating low over the waters off Cypress Island, the helicopter main rotor struck a tree limb projecting out from the nearby shore. As a result, the… - [Accident 20190721015129A](https://openairdocs.org/incident/20190721015129A), Jul 21, 2019: Robinson Helicopter R44 (N459TA), Ida Grove, IA, Substantial damage. Maneuvering through a shallow right turn, followed by left teardrop turn and alignment of next spray run. The pilot experienced loss of tail rotor control and… - [Accident 20190617007189A](https://openairdocs.org/incident/20190617007189A), Jun 17, 2019: Robinson Helicopter R44 (N1241W), Key West, FL, Substantial damage. On June 17, 2019 a properly credeintal pilot flying two passenger for an air tour company departed Key West International Airport. The aircraft departed… - [Accident 20190429006559A](https://openairdocs.org/incident/20190429006559A), Apr 29, 2019: Robinson Helicopter R44 (N808NV), Kailua, HI, Destroyed, 3 fatal. At approximately 0910L, aircraft experienced severe teetering of the main Rotor system resulting in penetration of the main rotor blades into the Fuselage… - [Accident 20190102000019A](https://openairdocs.org/incident/20190102000019A), Jan 2, 2019: Robinson Helicopter R44 (N772MG), Anna Maria, FL, Substantial damage. 1/2/19 At 1045 EST. N772MG an R44 helicopter crashed 1 mile off shore of bean point on Anna Maria island in the gulf of Mexico. Pilot and one passenger… - [Accident 20181118022739A](https://openairdocs.org/incident/20181118022739A), Nov 18, 2018: Robinson Helicopter R44 (N4167Y), Knox City, TX, Destroyed. On November 18, 2018, at approximately 0855 central daylight time (CDT), N4167Y, a Robinson R-44 was conducting aerial filming of hog hunting approximately 5… - [Accident 20181022020529A](https://openairdocs.org/incident/20181022020529A), Oct 22, 2018: Robinson Helicopter R44 (N4132H), Kaneohe, HI, Substantial damage. Part 91 air tour flight crashed onto sand bar north on Kaneohe bay, HI. Pilot experienced a medical issue in flight. - [Accident 20180918016349A](https://openairdocs.org/incident/20180918016349A), Sep 18, 2018: Robinson Helicopter R44 (N632NV), Wahiawa, HI, Substantial damage. On September 18, 2018, at approximate 0915 a helicopter Robinson model R-44, registration N632NV registered to novictor air tours performed an emergency… - [Accident 20180918013789A](https://openairdocs.org/incident/20180918013789A), Sep 18, 2018: Robinson Helicopter R44 (N632NV), Wahiawa, HI, Substantial damage. On September 18, 2018, at approximate 0915 a helicopter Robinson model R-44, registration N632NV registered to novictor air tours performed an emergency… - [Accident 20180727018159A](https://openairdocs.org/incident/20180727018159A), Jul 27, 2018: Robinson Helicopter R44 (N479AT), Lantana.., FL, Substantial damage. On July 27, 2018, at approximately 1850 EST, a Robinson R44, N479AT, registered and operated by ?airmen testing and training inc dba Palm Beach helicopters? A… - [Incident 20180715011239I](https://openairdocs.org/incident/20180715011239I), Jul 15, 2018: Robinson Helicopter R44 (N467HA), Larue County, KY, Minor damage. Aircraft came into contact with power lines during a reposition for a part 137 aerial application operation. All 84: https://openairdocs.org/engine/lycoming-o-540-f1b5/incidents.md ## Service difficulty reports (378, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 2025FA0000661](https://openairdocs.org/sdr/2025FA0000661), Aug 8, 2025: BRACKET. LOOSE. INSTALLED 3 DIFFERENT HARTZELL 149-12HT-H2 STARTERS (S/NS H-X112418, H-Z112422 & H-Z050870) BETWEEN 03/28/2025 AND 07/24/2025 ON A ROBINSON R44. EACH FAILED IN - [SDR 2NVA202408210020](https://openairdocs.org/sdr/2NVA202408210020), Aug 18, 2024: CONTROL ROD. DEFORMED. DURING ATTEMPTED ROTOR ENGAGEMENT FOLLOWING ENGINE START, TAIL ROTOR PEDALS DEFLECTED FULL LEFT. ENGINE WAS IMMEDIATELY SHUT DOWN AFTER LESS THAN 45 DEGREES OF - [SDR 2NVA202407090010](https://openairdocs.org/sdr/2NVA202407090010), Jul 9, 2024: INTAKE VALVE. FAILED. ABOUT 30 MINUTES INTO A TOUR, PILOT HEARD A SOUND AND EXPERIENCED LOSS OF POWER AND HIGH MANIFOLD PRESSURE. INITIATED POWER ON LANDING ON AN ADJACENT OPEN FIELD - [SDR 8HBR20240520062](https://openairdocs.org/sdr/8HBR20240520062), May 19, 2024: IGNITION UNIT. FAILED. PILOTS REPORTED A ROUGH ENGINE RUNNING ON THE LEFT IGNITION UNIT (EIS). IT WAS DETERMINED THE EIS UNIT HAS FAILED. THIS IS THE SECOND EIS IGNITION UNIT TO FAIL - [SDR YV3R2023120100590](https://openairdocs.org/sdr/YV3R2023120100590), Nov 11, 2023: DUAL TACHOMETER. DEFECTIVE. CUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY P/N: C792-5 ENGINE NEEDLE WAS OVERREADING 2%. - [SDR 2NVA202311010001](https://openairdocs.org/sdr/2NVA202311010001), Oct 28, 2023: INTAKE VALVE. DAMAGED. PILOT IDENTIFIED HIGH MANIFOLD PRESSURE REQUIRED AFTER TAKE OFF AND PERFORMED A PRE CAUTIONARY LANDING OFF AIRPORT. INSPECTION REVEALED A WET SPARK PLUG ON CYLI - [SDR YV3R2023120100588](https://openairdocs.org/sdr/YV3R2023120100588), Oct 5, 2023: GOVERNOR. DEFECTIVE. CUSTOMER REPORTED GOVERNOR ASSEMBLY P/N: B247-9 WAS INOPERATIVE. - [SDR YV3R2023071000575](https://openairdocs.org/sdr/YV3R2023071000575), May 30, 2023: CLUTCH. FAULTY. CUSTOMER REPORTED HEAVY YAW MOVEMENTS WITH LOUD NOISES, C018-4 CLUTCH ASSEMBLY HAS ALUMINUM AND STEEL PARTICLES IN OIL. - [SDR YV3R2023061400571](https://openairdocs.org/sdr/YV3R2023061400571), May 19, 2023: SWITCH. DEFECTIVE. CUSTOMER REPORTED SWITCHES ASSEMBLY P/N: C053-2 HAS LOOSE CONNECTIONS. - [SDR YV3R2023061500572](https://openairdocs.org/sdr/YV3R2023061500572), May 19, 2023: GOVERNOR. DEFECTIVE. CUSTOMER REPORTED GOVERNOR ASSEMBLY P/N: B247-5 HAS POSSIBLE FRICTION LOSS AT ARM. - [SDR YV3R2023061400570](https://openairdocs.org/sdr/YV3R2023061400570), May 18, 2023: SHIELD. CRACKED. CUSTOMER REPORTED SHIELD ASSEMBLY P/N: D314-1 WAS FOUND CRACKED. - [SDR YV3R2023042700560](https://openairdocs.org/sdr/YV3R2023042700560), Apr 12, 2023: TIMER. DEFECTIVE. CUSTOMER REPORTED TIME DELAY ASSEMBLY, LOW FUEL P/N: G655-1 LOW FUEL INDICATION INOPERATIVE. - [SDR YV3R2023042700558](https://openairdocs.org/sdr/YV3R2023042700558), Apr 11, 2023: DUAL TACHOMETER. DEFECTIVE. CUSTOMER REPORTED DUAL TACHOMETER P/N: C792-5 NEEDLES GET STUCK BETWEEN 68% - 90%. - [SDR YV3R2022092300540](https://openairdocs.org/sdr/YV3R2022092300540), Sep 15, 2022: GOVERNOR. DEFECTIVE. CUSTOMER REPORTED GOVERNOR ASSEMBLY P/N: B247-5 ARM FRICTION WAS LOW. - [SDR YV3R2022091400536](https://openairdocs.org/sdr/YV3R2022091400536), Aug 24, 2022: GOVERNOR. FAULTED. CUSTOMER REPORTED GOVERNOR ASSEMBLY P/N: B247-5 ARM FRICTION WAS HIGH. - [SDR 2022FA0000442](https://openairdocs.org/sdr/2022FA0000442), May 19, 2022: INTAKE VALVE. BURNED. LOW CYLINDER COMPRESSIONS WERE NOTED AT ANNUAL FOR AN ENGINE THAT WAS REPAIRED BY LYCOMING ONLY 180 HRS PRIOR TO CURRENT INSPECTION. BORESCOPE REVEALED BURNED I - [SDR 2022FA0000523](https://openairdocs.org/sdr/2022FA0000523), Mar 22, 2022: EXHAUST VALVE. BROKEN. DURING CRUISE FLIGHT ENGINE BEGAN TO RUN ROUGH AND AN INCREASED POWER SETTING WAS REQUIRED TO MAINTAIN LEVEL FLIGHT. THE HELICOPTER IMMEDIATELY RETURNED TO THE - [SDR YV3R2022021000516](https://openairdocs.org/sdr/YV3R2022021000516), Jan 25, 2022: NONE. NONE. CUSTOMER REPORTED FUEL SENDER (LEVEL) P/N: D252-1 CAUSED ERRATIC READINGS ON GAUGE ASSEMBLY. - [SDR YV3R2022011000506](https://openairdocs.org/sdr/YV3R2022011000506), Dec 14, 2021: NONE. NONE. GOVERNOR CONTROLLER P/N: D278-1 UNRESPONSIVE DURING AUTOROTATION RECOVERY TRAINING. - [SDR YV3R2021110900501](https://openairdocs.org/sdr/YV3R2021110900501), Nov 2, 2021: NONE. NONE. CUSTOMER REPORTED ACTUATOR ASSEMBLY P/N: C051-1 COLUMN SWITCH FAILED. - [SDR YV3R2021110900500](https://openairdocs.org/sdr/YV3R2021110900500), Oct 20, 2021: COLLECTOR. CRACKED. CUSTOMER REPORTED COLLECTOR P/N: C169-5 EXHAUST (LH) WAS CRACKED. - [SDR YV3R2021082800480](https://openairdocs.org/sdr/YV3R2021082800480), Aug 13, 2021: ACTUATOR. DEFECTIVE. CUSTOMER REPORTED ACTUATOR ASSEMBLY P/N: C051-1 WILL NOT DISENGAGE DURING SWITCH SPRING TEST METHOD 1. - [SDR YV3R2021081100479](https://openairdocs.org/sdr/YV3R2021081100479), Jul 29, 2021: GOVERNOR. DEFECTIVE. CUSTOMER REPORTED GOVERNOR ASSEMBLY P/N: B247-5 WAS UNSERVICEABLE. - [SDR YV3R2021081000475](https://openairdocs.org/sdr/YV3R2021081000475), Jul 22, 2021: GAUGE. FAULTED. CUSTOMER REPORTED CARBURETOR AIR TEMPERATURE GAUGE P/N: C604-8 WAS FAULTY. - [SDR YV3R2021081000476](https://openairdocs.org/sdr/YV3R2021081000476), Jul 22, 2021: GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD PRESSURE GAGE P/N: A600-4 WAS FAULTY. - [SDR YV3R2021070700468](https://openairdocs.org/sdr/YV3R2021070700468), Jun 29, 2021: DUAL TACHOMETER. DEFECTIVE. CUSTOMER REPORTED DUAL TACHOMETER P/N: C792-4 ROTOR NEEDLE WAS INTERMITTENT, AND THEN FAIL COMPLETELY. - [SDR YV3R2021062200463](https://openairdocs.org/sdr/YV3R2021062200463), Jun 8, 2021: ACTUATOR. DEFECTIVE. CUSTOMER REPORTED ACTUATOR ASSEMBLY P/N: C051-1 DID NOT COLLAPSE A COLUMN. - [SDR YV3R2021060900461](https://openairdocs.org/sdr/YV3R2021060900461), Jun 1, 2021: DUAL TACHOMETER. DEFECTIVE. CUSTOMER REPORTED DUAL TACHOMETER P/N: C792-4 ENGINE NEEDLE PEGS WITH POWER APPLIED. - [SDR YV3R2021052800453](https://openairdocs.org/sdr/YV3R2021052800453), May 11, 2021: SWITCH. DEFECTIVE. CUSTOMER REPORTED SWITCHES ASSEMBLY P/N: C053-2 HAD A FAULTY SWITCH. - [SDR 2021FA0000119](https://openairdocs.org/sdr/2021FA0000119), Apr 20, 2021: GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD PRESSURE GAGE P/N: A600-4 WILL NOT DISPLAY CORRECT PRESSURE. - [SDR YV3R2021043000452](https://openairdocs.org/sdr/YV3R2021043000452), Apr 20, 2021: GAUGE. DEFECTIVE. REVISED UNIQUE CONTROL #: CUSTOMER REPORTED MANIFOLD PRESSURE GAGE P/N: A600-4 WILL NOT DISPLAY CORRECT PRESSURE. - [SDR 2021FA0000162](https://openairdocs.org/sdr/2021FA0000162), Apr 4, 2021: CYLINDER HEAD. CRACKED. DURING FLIGHT, THE PILOT NOTICED A 20 KNOT LOSS UNDER MAXIMUM CONTINUOUS POWER. UPON LANDING AND INSPECTION, OIL SPRAY WAS FOUND ON RIGHT SIDE OF ENGINE AND FIR - [SDR 2021FA0000163](https://openairdocs.org/sdr/2021FA0000163), Apr 4, 2021: CYLINDER HEAD. CRACKED. DURING FLIGHT, THE PILOT NOTICED A 20 KNOT LOSS UNDER MAXIMUM CONTINUOUS POWER. UPON LANDING AND INSPECTION, OIL SPRAY WAS FOUND ON RIGHT SIDE OF ENGINE AND FIR - [SDR YV3R2021031300447](https://openairdocs.org/sdr/YV3R2021031300447), Mar 5, 2021: MOTOR. DEFECTIVE. CUSTOMER REPORTED GEARMOTOR ASSEMBLY P/N: D276-1 OPERATION TOO SLOW. - [SDR YV3R2021031200444](https://openairdocs.org/sdr/YV3R2021031200444), Mar 1, 2021: MOTOR. DEFECTIVE. CUSTOMER REPORTED GEARMOTOR ASSEMBLY P/N: D276-3 WAS INTERMITTENT IN OPERATION. - [SDR YV3R2021031200445](https://openairdocs.org/sdr/YV3R2021031200445), Mar 1, 2021: GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE (M.A.P) P/N: A600-4 WAS INTERMITTENT IN OPERATION. - [SDR YV3R2021022200435](https://openairdocs.org/sdr/YV3R2021022200435), Feb 16, 2021: TRANSMITTER. DEFECTIVE. CUSTOMER REPORTED SENDER-FUEL LEVEL PN: D252-1 WAS READING INCORRECTLY. - [SDR YV3R2021022200436](https://openairdocs.org/sdr/YV3R2021022200436), Feb 16, 2021: GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE (M.A.P) P/N: A600-4 NEEDLE INDICATING INCORRECTLY. - [SDR YV3R2021022200437](https://openairdocs.org/sdr/YV3R2021022200437), Feb 16, 2021: GAUGE. DEFECTIVE. CUSTOMER REPORTED MANIFOLD ABSOLUTE PRESSURE GAGE (M.A.P) P/N: A600-4 INDICATING NEEDLE STUCK. - [SDR YV3R2021030300440](https://openairdocs.org/sdr/YV3R2021030300440), Feb 16, 2021: DUAL TACHOMETER. DEFECTIVE. CUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY P/N: C792-5 ENGINE RPM INDICATION WAS IRREGULAR. - [SDR YV3R2021022200434](https://openairdocs.org/sdr/YV3R2021022200434), Feb 10, 2021: GOVERNOR. DEFECTIVE. CUSTOMER REPORTED CONTROLLER ASSEMBLY (GOVERNOR) PN: D278-1 WAS INOPERATIVE WHEN TURNED ON ABOVE 80%. - [SDR YV3R2021022200433](https://openairdocs.org/sdr/YV3R2021022200433), Feb 9, 2021: DUAL TACHOMETER. DEFECTIVE. CUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY PN: C792-4 ROTOR NEEDLE WAS INOPERATIVE. - [SDR 2021FA0000030](https://openairdocs.org/sdr/2021FA0000030), Feb 3, 2021: GOVERNOR. FAILED. DURING AIRCRAFT RUN-UP PROCEDURES PILOT ENGAGED GOVERNOR SWITCH INCREASED THROTTLE TO 832% FOR GOVERNOR TO TAKE OVER. GOVERNOR FAILED TO ENGAGE, AIRCRAFT SHUT D - [SDR YV3R2021020400431](https://openairdocs.org/sdr/YV3R2021020400431), Feb 1, 2021: DUAL TACHOMETER. DEFECTIVE. CUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY P/N: C792-4 WAS INDICATING ERRATIC. - [SDR YV3R2021020400430](https://openairdocs.org/sdr/YV3R2021020400430), Jan 20, 2021: INDICATOR. DEFECTIVE. CUSTOMER REPORTED ATTITUDE INDICATOR P/N: B823-12 WAS READING INACCURATELY. - [SDR YV3R2021011100419](https://openairdocs.org/sdr/YV3R2021011100419), Jan 7, 2021: SHIELD. CRACKED. CUSTOMER REPORTED EXHAUST SHIELD ASSEMBLY P/N: D314-1 WAS CRACKED. - [SDR YV3R2021012000423](https://openairdocs.org/sdr/YV3R2021012000423), Jan 7, 2021: DUAL TACHOMETER. DEFECTIVE. CUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY P/N: ROTOR NEEDLE WAS INTERMITTENT. - [SDR YV3R2021012000421](https://openairdocs.org/sdr/YV3R2021012000421), Jan 6, 2021: DUAL TACHOMETER. DEFECTIVE. CUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY P/N: C792-4 ROTOR NEEDLE GOES FULL SCALE. - [SDR YV3R2021010500412](https://openairdocs.org/sdr/YV3R2021010500412), Dec 18, 2020: DUAL TACHOMETER. DEFECTIVE. CUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY P/N: C792-4 ROTOR NEEDLE WAS UNSERVICEABLE. - [SDR YV3R2021010700414](https://openairdocs.org/sdr/YV3R2021010700414), Dec 18, 2020: DUAL TACHOMETER. READS LOW. CUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY P/N: C972-4 RPM NEEDLE READS LOW (INACCURATE). All 378: https://openairdocs.org/engine/lycoming-o-540-f1b5/reports.md ## STCs that may be installed (OpenAirDocs) (39) Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC - [STC SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. B & C Specialty Products Inc - [STC SE2932SW](https://openairdocs.org/stc/SE2932SW): Install carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive. Alcor LLC. Lists O-540 Series - [STC SE208SO](https://openairdocs.org/stc/SE208SO): Installation of ice indicator in the carburetor. LegacySTC.com. Lists O-540 Series - [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd - [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company - [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc - [STC SE00939WI](https://openairdocs.org/stc/SE00939WI): Installation of B&C Specialty Products Model BC 315-( ) Starter on Lycoming engines. B & C Specialty Products Inc - [STC SE2388CE](https://openairdocs.org/stc/SE2388CE): Installation of B&C Speciality Products lightweight (10.2) pounds) engine starter, part number BC-315-100-1 (12 volts) or part number BC-315-100-3 (24 volts). B & C Specialty Products Inc. Lists O-540 Series - [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc - [STC SE01436LA](https://openairdocs.org/stc/SE01436LA): Installation of Firewall Forward Technologies LLC modified camshaft. Centri-lube Technologies LLC - [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp - [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc - [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp - [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc. Lists O-540 Series - [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists O-540 Series - [STC SE00218NY](https://openairdocs.org/stc/SE00218NY): Replacement of Lycoming starter with SKY-TEC 12 volt starter installed. Hartzell Engine Technologies, LLC. Lists O-540 Series - [STC SE00226NY](https://openairdocs.org/stc/SE00226NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter Models 149-24HT and 122-24HT. Approval limited to 24-volt DC source available to the starter. Hartzell Engine Technologies, LLC - [STC SE00357NY](https://openairdocs.org/stc/SE00357NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter installed. Hartzell Engine Technologies, LLC. Lists O-540 Series - [STC SE2901NM](https://openairdocs.org/stc/SE2901NM): Lycoming valve cover gasket. Real Gaskets Tennessee - [STC SE00768CH](https://openairdocs.org/stc/SE00768CH): Replace Slick 6000, 6100, 6200 and 6300 series magnetos and TCM/Bendix S6-20, S6-200 and S6-1200 series magnetos with the Champion Limited Authority Spark Advance Regulator (LASARTM) ignition system. Champion Aerospace LLC - [STC SE8193SW](https://openairdocs.org/stc/SE8193SW): Grind nitriden high compression cylinder barrles to plus .010 oversize and install SL75089 P10 piston, SL74242 P10 compression ring, and SL73857 P10 oil ring. Superior Air Parts Inc - [STC SE7734SW](https://openairdocs.org/stc/SE7734SW): Modification of engine for operation with ethanol fuel. Shauck Dr Maxwell E Jr - [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc - [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter. Aviation Development Corporation - [STC SE00890LA](https://openairdocs.org/stc/SE00890LA): Installation of Nickson's cylinder barrels on Lycoming reciprocating engine models. Nickson's Machine Shop Inc. Lists O-540 Series - [STC SE1-201](https://openairdocs.org/stc/SE1-201): Installation of the Richter Aero Equipment Type B-4 or B-5 Temperature Probe. (O-360 SERIES (excl. A1C, C2B, C2D)). MidContinent Instru Co Inc. Lists O-540 Series - [STC SE09492SC](https://openairdocs.org/stc/SE09492SC): Installation and usage of Exxon 20W50 multigrade aircraft engine oil conforming to Exxon Oil formulation WS-3013. Exxon Company USA. Lists O-540 Series - [STC SE00663WI](https://openairdocs.org/stc/SE00663WI): Add the following approved fuel: Leaded and unleaded automotive gasoline, 91 minimum antiknock index. Intermixing with aviation gasoline also approved. Petersen Aviation Inc - [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co. Lists O-540 Series - [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists O-540 Series - [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP. Phillips Petroleum Co. Lists O-540 Series - [STC SE5924SW](https://openairdocs.org/stc/SE5924SW): Installation of stainless steel replacement exhaust studs on AVCO engines. Perrigo & Steele Aircraft Engr Company. Lists O-540 Series - [STC SE244NE](https://openairdocs.org/stc/SE244NE): Installation of Mattituck plasma flame sprayed cylinder barrels in Teledyne reciprocating engines. Mattituck Airbase, Inc. Lists O-540 Series - [STC SE80NE](https://openairdocs.org/stc/SE80NE): Installation and usage of Bel-Ray synthetic aviation oil, Bel-Ray Aero 1, (nonsupercharged), horizontally opposed direct drive, aircraft engines of 350 hp. or less. Bel-Ray Company, Inc. Lists O-540 Series - [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists O-540 Series - [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines. AMS/OIL. Lists O-540 Series - [STC SE44WE](https://openairdocs.org/stc/SE44WE): Use of Kling Aviation Oil, Specifications KL-100, KL-200 and KL-300 in Continental and Lycoming engines. Kling Oil Company. Lists O-540 Series - [STC SA01436DE](https://openairdocs.org/stc/SA01436DE) (historical): Installation of Firewall Forward Technologies, LLC modified camshaft. Centri-Lube Technologies LLC ## PMA parts (OpenAirDocs) (over 1,000, first 50) Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this engine model on its data sheet, so check the FAA record before relying on it. Newest first. - [72-231114-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157761992320260722204351.0001): TAG-Engine. Swift Fuels, LLC · PMA PQ04423CE · Modification part · Jul 17, 2026 - [AB-160844](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100141747720251216184413.0001): Spring & Brush Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-160844 · Nov 10, 2025 - [OC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178549155320250923184433.0001): Oil Cooler Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Sep 12, 2025 - [AE45BS](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID187750711420250908153020.0001): Brush Rack Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALU1045BS · Aug 27, 2025 - [AE943](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID185624017520250908153027.0001): Rotor Shaft. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALU-228 · Aug 27, 2025 - [AE45BS-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID173583138520250908153031.0001): Brush Rack Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALU-1045BS · Aug 27, 2025 - [AE15BA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167463833220250908153021.0001): Brush Rack Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALV-1015 · Aug 27, 2025 - [AE944](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157009852420250908153027.0001): Rotor Shaft. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALE-273 · Aug 27, 2025 - [AE45BS-E](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID143460060920250908153031.0001): Brush Rack Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALE-1045BS · Aug 27, 2025 - [AE2241](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID127316494620250908153022.0001): Fan Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number 90-2241 · Aug 27, 2025 - [AE2259](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID112306055120250908153022.0001): Fan Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number 90-2259 · Aug 27, 2025 - [AE1132](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103582853720250908153023.0001): Slip Ring End Housing. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Numbers ALK-1132AS… · Aug 27, 2025 - [SL6](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151538433320250923185921.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025 - [TXPL6](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146504457020250923185923.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025 - [HSS](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID104096221220250923185925.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025 - [AA48111-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120682187320240813134136.0001): Oil Filter. Aero Accessories LLC · PMA PQ1206CE · Replaces Aero AccessoriesAA48111Champion… · Jul 12, 2024 - [ES3740K](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID131045623020251216184213.0001): Contact Point Secondary. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3740 · May 20, 2024 - [AB-382585](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID195988018720251216184453.0001): Ignition ContactAssembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-382585 · Dec 8, 2023 - [AB-157160](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID193485923720251216184437.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-157160 · Dec 8, 2023 - [AB-400623](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID193069304920251216184444.0001): Ball Bearing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental… · Dec 8, 2023 - [AB-51678](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID192819677720251216184507.0001): Oil Deflector. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-51678 · Dec 8, 2023 - [ES10-35936-7](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191691087420251216184428.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-35936-7 · Dec 8, 2023 - [AB-357586](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182632077520251216184446.0001): Gear. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-357586 · Dec 8, 2023 - [ES10-35937-8](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181846469020251216184431.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-35937-8 · Dec 8, 2023 - [ES10-35935-6](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180932652920251216184430.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-35935-6 · Dec 8, 2023 - [AB-50765](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID176916822920251216184507.0001): Clamp. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-50765 · Dec 8, 2023 - [AB-606505](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175976763420251216184439.0001): Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-606505 · Dec 8, 2023 - [AB-157158](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID173837306320251216184432.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental MotorsP/N: 10-157158 · Dec 8, 2023 - [AB-92815-37](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID165115893520251216184504.0001): Retaining Ring. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-92815-37 · Dec 8, 2023 - [AB-382584](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164325700920251216184454.0001): Ignition ContactAssembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-382584 · Dec 8, 2023 - [AB-357173](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163626963020251216184452.0001): Ignition ContactAssembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-357173 · Dec 8, 2023 - [AB-349263](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID161733554320251216184505.0001): O-Ring. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-349263 · Dec 8, 2023 - [AB-357174](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152704886320251216184451.0001): Ignition ContactAssembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-357174 · Dec 8, 2023 - [AB-391213](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146344589820251216184434.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-391213 · Dec 8, 2023 - [AB-102083](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID138991042420251216184433.0001): Screw, Distr. Block. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-102083 · Dec 8, 2023 - [AB-90788-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID138975580920251216184500.0001): Woodruff Key. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-90788-5 · Dec 8, 2023 - [AB-163374](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID138652177520251216184458.0001): Felt Strip. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-163374 · Dec 8, 2023 - [AB-90751-18](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID138224109620251216184503.0001): Cotter Pin. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-90751-18 · Dec 8, 2023 - [AB-357426](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID138013653720251216184448.0001): Distributor Block. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-357426 · Dec 8, 2023 - [AB-86527](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136544385220251216184459.0001): Lubricant. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-86527 · Dec 8, 2023 - [AB-382789](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID131202563120251216184436.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-382789 · Dec 8, 2023 - [AB-349326](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129994820320251216184456.0001): Fish Paper. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-349326 · Dec 8, 2023 - [AB-50752](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125758886020251216184457.0001): Felt Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-50752 · Dec 8, 2023 - [AB-55501](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID122580157220251216184441.0001): Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-55501 · Dec 8, 2023 - [AB-391309](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120647802220251216184443.0001): Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-391309 · Dec 8, 2023 - [AB-92815-62](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID118430918720251216184503.0001): Retainer Ring. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental10-92815-62 · Dec 8, 2023 - [AB-14268](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID116974477620251216184440.0001): Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-14268 · Dec 8, 2023 - [AB-53397](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113466624320251216184442.0001): Washer, Flat. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-53397 · Dec 8, 2023 - [AB-90751-19](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID111572971120251216184501.0001): Cotter Pin. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-90751-19 · Dec 8, 2023 - [AB-349511](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103229167720251216184439.0001): Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-349511 · Dec 8, 2023 All of them: https://openairdocs.org/engine/lycoming-o-540-f1b5/pma.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.