# Lycoming VO-540 series - Type: Engine model (FAA registry) - Registry codes: 41534, 41582 - Manufacturer (registry): LYCOMING - Model: VO-540 SERIES · VO-540 SER - Engine type: Reciprocating - Power: 310 hp - Data sheet: [TCDS E-304](https://openairdocs.org/tcds/E-304) (OpenAirDocs) - Holder: Lycoming Engines - Installed in: 110 registered aircraft - Page: https://openairdocs.org/engine/lycoming-vo-540-series The registry names only the engine series, so ADs for every model in the series are matched. The FAA lists this model under more than one registry code, usually for different spellings of the maker. This page covers them all. ## 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 2026-04-11](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 2022-16-03](https://openairdocs.org/ad/2022-16-03): Engine (RECIPROCATING) · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 236 more. Effective Aug 15, 2022 - [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 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 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 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 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 80-04-04 R1](https://openairdocs.org/ad/80-04-04-R1): Crankshaft Flange Bolts · Lycoming Engines IVO-540-A1A, TIVO-540-A2A, TVO-435-A1A and 38 more. Effective Aug 18, 1980 - [AD 73-23-01](https://openairdocs.org/ad/73-23-01): Piston Pin Assembly · Lycoming Engines AIO-360-A1A, AIO-360-A1B, AIO-360-A2A and 215 more. Effective Jan 13, 1977 - [AD 73-05-01](https://openairdocs.org/ad/73-05-01): Connecting Rod Bearing Assemblies · Lycoming Engines IVO-540-A1A, TIVO-540-A2A, TVO-540-A1A and 21 more. Effective Jul 9, 1974 - [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 68-08-08](https://openairdocs.org/ad/68-08-08): Hydraulic Valve · Lycoming Engines IGSO-480-A1A6, IGSO-480-A1B6, IGSO-480-A1C6 and 44 more. Effective May 19, 1968 - [AD 62-03-02](https://openairdocs.org/ad/62-03-02): Hydraulic Valve Tappet Body and Plunger Assembly · Lycoming Engines VO-540-A1A, VO-540-B1A, VO-540-B1B and 6 more. Effective Feb 27, 1962 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 ## Information bulletins (advisory) (2) - [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-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014 ## Registered aircraft (110, first 50) - [N102BB](https://openairdocs.org/aircraft/N102BB): [Nester Randal K](https://openairdocs.org/faa-owner/NESTER%20RANDAL%20K), [Seguin, TX](https://openairdocs.org/faa-place/TX/Seguin), built 1959, S/N 1107 - [N1139W](https://openairdocs.org/aircraft/N1139W): [Mundis Jay E](https://openairdocs.org/faa-owner/MUNDIS%20JAY%20E), [Red Lion, PA](https://openairdocs.org/faa-place/PA/Red%20Lion), built 1964, S/N 3164 - [N1150W](https://openairdocs.org/aircraft/N1150W): [Boho LLC](https://openairdocs.org/faa-owner/BOHO%20LLC), [Lewes, DE](https://openairdocs.org/faa-place/DE/Lewes), built 1964, S/N 3327 - [N115SL](https://openairdocs.org/aircraft/N115SL): [Dykstra Donald J](https://openairdocs.org/faa-owner/DYKSTRA%20DONALD%20J), [Dorr, MI](https://openairdocs.org/faa-place/MI/Dorr), S/N 7694 - [N1184W](https://openairdocs.org/aircraft/N1184W): [Johnson Kyle L](https://openairdocs.org/faa-owner/JOHNSON%20KYLE%20L), [Exira, IA](https://openairdocs.org/faa-place/IA/Exira), built 1965, S/N 3341 - [N119NR](https://openairdocs.org/aircraft/N119NR): [Slikker Flying Service Inc](https://openairdocs.org/faa-owner/SLIKKER%20FLYING%20SERVICE%20INC), [Buttonwillow, CA](https://openairdocs.org/faa-place/CA/Buttonwillow), built 1966, S/N 1472 - [N12RN](https://openairdocs.org/aircraft/N12RN): [Sunshine Holding LLC](https://openairdocs.org/faa-owner/SUNSHINE%20HOLDING%20LLC), [Danbury, CT](https://openairdocs.org/faa-place/CT/Danbury), built 1965, S/N 3350 - [N12UH](https://openairdocs.org/aircraft/N12UH): [Jstream Lc](https://openairdocs.org/faa-owner/JSTREAM%20LC), [Sheridan, WY](https://openairdocs.org/faa-place/WY/Sheridan), built 1962, S/N 1395 - [N130HA](https://openairdocs.org/aircraft/N130HA): [C&C Helicopters Inc](https://openairdocs.org/faa-owner/C%26C%20HELICOPTERS%20INC), [Kuna, ID](https://openairdocs.org/faa-place/ID/Kuna), S/N HA3030 - [N132HA](https://openairdocs.org/aircraft/N132HA): [Sky Copters Inc](https://openairdocs.org/faa-owner/SKY%20COPTERS%20INC), [Westmoreland, KS](https://openairdocs.org/faa-place/KS/Westmoreland), built 1975, S/N HA3032 - [N133HA](https://openairdocs.org/aircraft/N133HA): [Hanson Leasing Inc](https://openairdocs.org/faa-owner/HANSON%20LEASING%20INC), [Bad Axe, MI](https://openairdocs.org/faa-place/MI/Bad%20Axe), built 1976, S/N HA3033 - [N1342X](https://openairdocs.org/aircraft/N1342X): [Hhi Farms LLC](https://openairdocs.org/faa-owner/HHI%20FARMS%20LLC), [Hamilton, MI](https://openairdocs.org/faa-place/MI/Hamilton), built 1965, S/N 7531 - [N1396X](https://openairdocs.org/aircraft/N1396X): [Hammock Flying Service Inc](https://openairdocs.org/faa-owner/HAMMOCK%20FLYING%20SERVICE%20INC), [Smithville, AR](https://openairdocs.org/faa-place/AR/Smithville), built 1967, S/N 7570 - [N139HA](https://openairdocs.org/aircraft/N139HA): [Knutson Flying Service Inc](https://openairdocs.org/faa-owner/KNUTSON%20FLYING%20SERVICE%20INC), [Tioga, ND](https://openairdocs.org/faa-place/ND/Tioga), built 1976, S/N HA3039 - [N1420W](https://openairdocs.org/aircraft/N1420W): [Hammock Flying Service Inc](https://openairdocs.org/faa-owner/HAMMOCK%20FLYING%20SERVICE%20INC), [Smithville, AR](https://openairdocs.org/faa-place/AR/Smithville), built 1969, S/N 7663 - [N14637](https://openairdocs.org/aircraft/N14637): [Fort Wolters Helicopter Inc](https://openairdocs.org/faa-owner/FORT%20WOLTERS%20HELICOPTER%20INC), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1993, S/N 1577 - [N14EF](https://openairdocs.org/aircraft/N14EF): [International Air Services Inc Trustee](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIR%20SERVICES%20INC%20TRUSTEE), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), built 1988, S/N 4622009 - [N14MQ](https://openairdocs.org/aircraft/N14MQ): [Fort W0lters Helicopter Inc](https://openairdocs.org/faa-owner/FORT%20W0LTERS%20HELICOPTER%20INC), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1961, S/N 1474 - [N1512E](https://openairdocs.org/aircraft/N1512E): [Fort Wolters Helicopters](https://openairdocs.org/faa-owner/FORT%20WOLTERS%20HELICOPTERS), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1965, S/N 1792 - [N1523T](https://openairdocs.org/aircraft/N1523T): [Bartlett Robert E](https://openairdocs.org/faa-owner/BARTLETT%20ROBERT%20E), [Cleveland, TX](https://openairdocs.org/faa-place/TX/Cleveland), built 1964, S/N 1740 - [N152DB](https://openairdocs.org/aircraft/N152DB): [Durango LLC](https://openairdocs.org/faa-owner/DURANGO%20LLC), [Brownsville, TX](https://openairdocs.org/faa-place/TX/Brownsville), built 2000, S/N 3257135 - [N180HA](https://openairdocs.org/aircraft/N180HA): [Ambrosini Helicopters Inc](https://openairdocs.org/faa-owner/AMBROSINI%20HELICOPTERS%20INC), [Fresno, CA](https://openairdocs.org/faa-place/CA/Fresno), built 1980, S/N HA3080 - [N191SG](https://openairdocs.org/aircraft/N191SG): [Angel William D](https://openairdocs.org/faa-owner/ANGEL%20WILLIAM%20D), [Rancho Cucamonga, CA](https://openairdocs.org/faa-place/CA/Rancho%20Cucamonga), built 1984, S/N 3805 - [N196FT](https://openairdocs.org/aircraft/N196FT): [Continental Title Trust LLC Trustee](https://openairdocs.org/faa-owner/CONTINENTAL%20TITLE%20TRUST%20LLC%20TRUSTEE), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita), built 1962, S/N 1364 - [N2098](https://openairdocs.org/aircraft/N2098): [Classic Rotors Museum](https://openairdocs.org/faa-owner/CLASSIC%20ROTORS%20MUSEUM), [Ramona, CA](https://openairdocs.org/faa-place/CA/Ramona), built 1963, S/N 2850 - [N21MP](https://openairdocs.org/aircraft/N21MP): [Back Jeff](https://openairdocs.org/faa-owner/BACK%20JEFF), [Oneonta, NY](https://openairdocs.org/faa-place/NY/Oneonta), built 1971, S/N 7755 - [N22353](https://openairdocs.org/aircraft/N22353): [Rye Corp LLC](https://openairdocs.org/faa-owner/RYE%20CORP%20LLC), [Lenoir City, TN](https://openairdocs.org/faa-place/TN/Lenoir%20City), built 1970, S/N 7721 - [N2275M](https://openairdocs.org/aircraft/N2275M): [Borszich Claude C Jr](https://openairdocs.org/faa-owner/BORSZICH%20CLAUDE%20C%20JR), [Phoenix, AZ](https://openairdocs.org/faa-place/AZ/Phoenix), built 1961, S/N 1305 - [N236HA](https://openairdocs.org/aircraft/N236HA): [Endries Ryan A](https://openairdocs.org/faa-owner/ENDRIES%20RYAN%20A), [Milwaukee, WI](https://openairdocs.org/faa-place/WI/Milwaukee), built 1977, S/N HA3063 - [N238N](https://openairdocs.org/aircraft/N238N): [Canton, GA](https://openairdocs.org/faa-place/GA/Canton), S/N 1001, Registration pending - [N25196](https://openairdocs.org/aircraft/N25196): [Fort Wolters Helicopter Inc](https://openairdocs.org/faa-owner/FORT%20WOLTERS%20HELICOPTER%20INC), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1976, S/N 101 - [N255PH](https://openairdocs.org/aircraft/N255PH): [Egenolf Evan Patrick](https://openairdocs.org/faa-owner/EGENOLF%20EVAN%20PATRICK), [Laramie, WY](https://openairdocs.org/faa-place/WY/Laramie), S/N 3307 - [N2678Y](https://openairdocs.org/aircraft/N2678Y): [Northwest Helicopters I Inc](https://openairdocs.org/faa-owner/NORTHWEST%20HELICOPTERS%20I%20INC), [Olympia, WA](https://openairdocs.org/faa-place/WA/Olympia), built 1960, S/N 2048 - [N285TT](https://openairdocs.org/aircraft/N285TT): [Valiair Lc Trustee](https://openairdocs.org/faa-owner/VALIAIR%20LC%20TRUSTEE), [Casper, WY](https://openairdocs.org/faa-place/WY/Casper), built 1971, S/N 7746 - [N2VU](https://openairdocs.org/aircraft/N2VU): [Upham Slade C](https://openairdocs.org/faa-owner/UPHAM%20SLADE%20C), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 1965, S/N 1726 - [N305AL](https://openairdocs.org/aircraft/N305AL): [Forney Museum Of Transportation](https://openairdocs.org/faa-owner/FORNEY%20MUSEUM%20OF%20TRANSPORTATION), [Denver, CO](https://openairdocs.org/faa-place/CO/Denver), S/N 1031 - [N3068G](https://openairdocs.org/aircraft/N3068G): [Wheatley Lester E Jr](https://openairdocs.org/faa-owner/WHEATLEY%20LESTER%20E%20JR), [Riverside, CA](https://openairdocs.org/faa-place/CA/Riverside), S/N 2856 - [N3081G](https://openairdocs.org/aircraft/N3081G): [Scotts Helicopter Service Inc](https://openairdocs.org/faa-owner/SCOTTS%20HELICOPTER%20SERVICE%20INC), [Le Sueur, MN](https://openairdocs.org/faa-place/MN/Le%20Sueur), built 1964, S/N 3153 - [N333TV](https://openairdocs.org/aircraft/N333TV): [Chap Jerry L](https://openairdocs.org/faa-owner/CHAP%20JERRY%20L), [Patagonia, AZ](https://openairdocs.org/faa-place/AZ/Patagonia), built 1965, S/N 3305 - [N3351F](https://openairdocs.org/aircraft/N3351F): [Carey James D](https://openairdocs.org/faa-owner/CAREY%20JAMES%20D), [Winterset, IA](https://openairdocs.org/faa-place/IA/Winterset), built 1960, S/N 1207 - [N34SD](https://openairdocs.org/aircraft/N34SD): [Fort Wolters Helicopters Inc](https://openairdocs.org/faa-owner/FORT%20WOLTERS%20HELICOPTERS%20INC), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1965, S/N 1618 - [N36670](https://openairdocs.org/aircraft/N36670): [S & S Landscape Supply Inc](https://openairdocs.org/faa-owner/S%20%26%20S%20LANDSCAPE%20SUPPLY%20INC), [Grand Junction, CO](https://openairdocs.org/faa-place/CO/Grand%20Junction), built 1960, S/N 1277 - [N38092](https://openairdocs.org/aircraft/N38092): [Hhi Farms LLC](https://openairdocs.org/faa-owner/HHI%20FARMS%20LLC), [Hamilton, MI](https://openairdocs.org/faa-place/MI/Hamilton), built 1977, S/N 77004 - [N40277](https://openairdocs.org/aircraft/N40277): [Northwest Helicopters I Inc](https://openairdocs.org/faa-owner/NORTHWEST%20HELICOPTERS%20I%20INC), [Olympia, WA](https://openairdocs.org/faa-place/WA/Olympia), built 1979, S/N 5087 - [N4029S](https://openairdocs.org/aircraft/N4029S): [Slikker Flying Service Inc](https://openairdocs.org/faa-owner/SLIKKER%20FLYING%20SERVICE%20INC), [Buttonwillow, CA](https://openairdocs.org/faa-place/CA/Buttonwillow), built 1980, S/N 5129 - [N40346](https://openairdocs.org/aircraft/N40346): [Rutland Flying Service](https://openairdocs.org/faa-owner/RUTLAND%20FLYING%20SERVICE), [Ridge Spring, SC](https://openairdocs.org/faa-place/SC/Ridge%20Spring), built 1982, S/N 5192 - [N4070B](https://openairdocs.org/aircraft/N4070B): [Wheatley Lester E Jr](https://openairdocs.org/faa-owner/WHEATLEY%20LESTER%20E%20JR), [Priest River, ID](https://openairdocs.org/faa-place/ID/Priest%20River), S/N 1812 - [N410NR](https://openairdocs.org/aircraft/N410NR): [Haynes Cory W](https://openairdocs.org/faa-owner/HAYNES%20CORY%20W), [Heyburn, ID](https://openairdocs.org/faa-place/ID/Heyburn), built 1961, S/N 2244 - [N4262Y](https://openairdocs.org/aircraft/N4262Y): [Swift Horse Wj LLC](https://openairdocs.org/faa-owner/SWIFT%20HORSE%20WJ%20LLC), [Fredericksburg, TX](https://openairdocs.org/faa-place/TX/Fredericksburg), built 1965, S/N 7674 - [N4277X](https://openairdocs.org/aircraft/N4277X): [High Country Helicopter LLC](https://openairdocs.org/faa-owner/HIGH%20COUNTRY%20HELICOPTER%20LLC), [Blowing Rock, NC](https://openairdocs.org/faa-place/NC/Blowing%20Rock), built 1981, S/N 5161 All 110: https://openairdocs.org/engine/lycoming-vo-540-series/aircraft.md ## NTSB investigations (376, 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 ERA26LA331](https://openairdocs.org/ntsb/ERA26LA331), Sep 6, 2026: Bell 47G-4A (N797WS), Alcoma, FL, substantial damage, investigation ongoing - [NTSB WPR25LA246](https://openairdocs.org/ntsb/WPR25LA246), Aug 11, 2025: Hiller UH-12E (N703WA), Fobes Hill, WA, substantial damage. Probable cause: The pilot’s abrupt maneuver to avoid a powerline during an aerial application flight, which resulted in the helicopter’s impact with terrain. - [NTSB WPR22LA245](https://openairdocs.org/ntsb/WPR22LA245), Jul 6, 2022: Hiller UH-12E (N130HA), Wenatchee, WA, destroyed. Probable cause: The pilot’s failure to maintain clearance from power lines during low-level operations in light rain conditions. - [NTSB ERA22LA118](https://openairdocs.org/ntsb/ERA22LA118), Feb 9, 2022: Hiller UH-12E4 (N64741), Shrewsbury, PA, substantial damage. Probable cause: The pilot’s failure to maintain control during the descent which resulted in a hard landing. - [NTSB ERA17LA285](https://openairdocs.org/ntsb/ERA17LA285), Aug 20, 2017: Bell 47G (N9526), St Marys, PA, substantial damage. Probable cause: The student pilot's inadequate prefight planning and en route fuel management, which resulted in fuel exhaustion and a total loss of engine power. - [NTSB GAA15CA202](https://openairdocs.org/ntsb/GAA15CA202), Jul 25, 2015: Bell 47G (N1420W), De Queen, AR, substantial damage. Probable cause: The pilot's failure to conduct helicopter performance planning, which resulted in an uncontrolled descent and impact with a truck and terrain during takeoff from an elevated platform. - [NTSB CEN15LA322](https://openairdocs.org/ntsb/CEN15LA322), Jul 24, 2015: Bell 47G 4A (N1396X), Gilbert, IA, substantial damage. Probable cause: The total loss of engine power due to fuel starvation because the available fuel shifted within the tanks due to an abrupt nose-low maneuver to avoid an obstacle, which resulted in a hard forced… - [NTSB WPR15LA138](https://openairdocs.org/ntsb/WPR15LA138), Mar 29, 2015: Hiller UH 12E (N130HA), Firebaugh, CA, substantial damage. Probable cause: A loss of engine power for reasons that could not be determined because postaccident examination of the engine did not reveal any anomalies that would have precluded normal operation. - [NTSB ERA14LA405](https://openairdocs.org/ntsb/ERA14LA405), Aug 25, 2014: Hiller UH 12E (N4035A), Cape May Court House, NJ, substantial damage. Probable cause: The mechanic’s failure to detect excessive wear on the engine’s lateral snubber vibration mount during the latest annual inspection, which resulted in an in-flight engine failure and a subsequent… - [NTSB WPR14LA062](https://openairdocs.org/ntsb/WPR14LA062), Dec 9, 2013: Hiller UH 12E (N36MV), Chowchilla, CA, substantial damage. Probable cause: The failure of the torsional drive coupling, which resulted in a loss of drive to the main rotor system during low-altitude flight. - [NTSB WPR12LA115](https://openairdocs.org/ntsb/WPR12LA115), Feb 22, 2012: Texas Helicopter OH-13E/M74 (N43921), Farmington, CA, substantial damage. Probable cause: The in-flight separation of the wood portion of one main rotor blade while maneuvering at low level, the reason for which could not be determined because postaccident examination did not reveal any… - [NTSB CEN11CA403](https://openairdocs.org/ntsb/CEN11CA403), Jun 18, 2011: Bell 47G-4A (N24HM), Montgomery City, MO, substantial damage. Probable cause: A loss of control during the precautionary landing, which resulted in inadvertent contact between the main rotor and the tailboom. Contributing to the accident was the overloaded condition. - [NTSB ERA11LA216](https://openairdocs.org/ntsb/ERA11LA216), Mar 25, 2011: Hiller UH-12E (N4033P), Culpeper, VA, substantial damage. Probable cause: Mechanical failure of the transmission for reasons that could not be determined because the transmission could not be torn down. - [NTSB WPR11CA146](https://openairdocs.org/ntsb/WPR11CA146), Feb 26, 2011: Hiller UH-12E (N236HA), Colusa, CA, substantial damage. Probable cause: The pilot's failure to maintain an adequate airspeed and an inadvertent encounter with settling with power while flying downwind. - [NTSB CEN11LA117](https://openairdocs.org/ntsb/CEN11LA117), Dec 18, 2010: Piper PA-46-350P (N92358), Lake Elmo, MN, substantial damage. Probable cause: The pilot's improper fuel management which resulted in the loss of engine power due to fuel starvation. Contributing to the accident was the distraction of the cabin depressurization. - [NTSB CEN10CA362](https://openairdocs.org/ntsb/CEN10CA362), Jun 25, 2010: Hiller UH-12E (N9754C), Grand Junction, CO, substantial damage. Probable cause: The total loss of engine power for undetermined reasons. - [NTSB WPR10CA283](https://openairdocs.org/ntsb/WPR10CA283), Jun 8, 2010: Bell 47G-4A (N7069J), Shaw Island, WA, substantial damage. Probable cause: The passenger's inadvertent movement of the mixture control during climb, resulting in a loss of engine power. - [NTSB WPR10LA127](https://openairdocs.org/ntsb/WPR10LA127), Feb 2, 2010: Hiller UH-12E (N36MV), Los Banos, CA, substantial damage. Probable cause: A partial loss of engine power due to a failure of the throttle interconnect hardware, which resulted in a hard landing. - [NTSB WPR10LA117](https://openairdocs.org/ntsb/WPR10LA117), Jan 22, 2010: Bell 47G-4A (N28938), Shafter, CA, substantial damage. Probable cause: The loss of a main rotor blade counterweight due to corrosion. Contributing to the accident was the failure of the operator to perform the initial and recurrent inspections required by a Service… - [NTSB WPR10CA094](https://openairdocs.org/ntsb/WPR10CA094), Jan 1, 2010: Hiller UH-12E (N440NR), Tipton, CA, substantial damage. Probable cause: The pilot's failure to maintain clearance from terrain. - [NTSB CEN09CA517](https://openairdocs.org/ntsb/CEN09CA517), Aug 11, 2009: Bell 47G-2A (N9526), Covert, MI, substantial damage. Probable cause: A loss of engine power due to fuel starvation as a result of blocked fuel vents. - [NTSB CEN09CA359](https://openairdocs.org/ntsb/CEN09CA359), Jun 11, 2009: Hiller UH-12E (N34SD), Stringtown, OK, substantial damage. Probable cause: The pilot's failure to maintain clearance from power lines. Contributing to the accident was the pilot's preoccupation with personal affairs. - [NTSB WPR09LA028](https://openairdocs.org/ntsb/WPR09LA028), Oct 30, 2008: Hiller UH-12E (N61436), Powder River, WY, substantial damage. Probable cause: A flight control system malfunction while the helicopter was maneuvering at low altitude due to the failure/separation of the rotor blade control tube. - [NTSB WPR09CA008](https://openairdocs.org/ntsb/WPR09CA008), Oct 11, 2008: Bell 47J-2A (N8567F), Florence, AZ, substantial damage. Probable cause: The pilot’s inadequate compensation for a wind shift encountered during the landing approach, which resulted in a hard landing and rollover. Contributing to the accident was the encounter with the… - [NTSB CHI08CA252](https://openairdocs.org/ntsb/CHI08CA252), Aug 15, 2008: Hiller UH-12E (N945HA), Cokato, MN, substantial damage. Probable cause: The pilot did not visually identify and maintain clearance with the power lines, and the pilot's inability to maintain control of the helicopter once it contacted the power lines. Factors associated… - [NTSB CHI08LA211](https://openairdocs.org/ntsb/CHI08LA211), Jul 24, 2008: Bell 47G-4A (N24HM), Mayville, WI, minor damage, 1 fatal. Probable cause: The pilot's failure to maintain clearance with the rotating rotor blades after he exited the helicopter after landing. - [NTSB DFW08LA100](https://openairdocs.org/ntsb/DFW08LA100), Apr 7, 2008: Hiller UH-12E (N34SD), Quinton, OK, substantial damage. Probable cause: An undetermined mechanical malfuction associated with the tail rotor drive system which led to a loss of control. - [NTSB DEN08LA071](https://openairdocs.org/ntsb/DEN08LA071), Apr 4, 2008: Hiller UH-12E (N40289), La Porte, TX, substantial damage. Probable cause: The loss of tail rotor effectiveness. Contributing factors were the sudden windshift to a tailwind, and the pilot initiating a hovering turn in ground effect. - [NTSB DFW06CA013](https://openairdocs.org/ntsb/DFW06CA013), Oct 23, 2005: Hiller UH-12E (N909BC), Pasadena, TX, substantial damage. Probable cause: The pilot's inadequate fuel management, which resulted in fuel exhaustion and a loss of engine power. A contributing factor was the lack of suitable terrain for the forced landing. - [NTSB LAX05CA313](https://openairdocs.org/ntsb/LAX05CA313), Sep 22, 2005: Hiller UH 12-E (N141HA), Five Points, CA, substantial damage. Probable cause: The pilot's failure to refuel the helicopter, which resulted in fuel exhaustion. - [NTSB LAX05LA187](https://openairdocs.org/ntsb/LAX05LA187), May 25, 2005: Bell 47G-4A (N110DT), Bakersfield, CA, destroyed. Probable cause: the pilot's inadequate visual lookout and failure to maintain clearance from the power lines. - [NTSB SEA05CA104](https://openairdocs.org/ntsb/SEA05CA104), May 23, 2005: Hiller UH-12E (N3030H), Estacada, OR, substantial damage. Probable cause: The failure of the pilot to maintain landing skid clearance during hover taxi, which resulted in a dynamic rollover. A factor was the gusty wind condition. - [NTSB FTW04LA198](https://openairdocs.org/ntsb/FTW04LA198), Aug 1, 2004: Bell 47-G2 (N7892B), La Porte, TX, destroyed. Probable cause: The loss of engine power for undetermined reasons. - [NTSB SEA04LA073](https://openairdocs.org/ntsb/SEA04LA073), Apr 26, 2004: Hiller UH-12E (N9785C), Haines, OR, substantial damage. Probable cause: A momentary partial loss of power for undetermined reason(s) and the pilot's failure to maintain adequate RPM during his autorotation landing. - [NTSB LAX04LA176](https://openairdocs.org/ntsb/LAX04LA176), Apr 3, 2004: Bell 47G-4A (N7NB), Bakersfield, CA, substantial damage. Probable cause: a loss of tail rotor drive due to a disconnection of the drive shaft's splined coupling at the tail rotor gear box. The splined coupling to tail rotor gear box disconnection occurred as a result of… - [NTSB LAX03CA284](https://openairdocs.org/ntsb/LAX03CA284), Sep 9, 2003: Hiller UH12E (N9792C), Kekaha, HI, substantial damage. Probable cause: the pilot's failure to maintain clearance with the wires due to an inadequate visual lookout. - [NTSB CHI03LA185](https://openairdocs.org/ntsb/CHI03LA185), Jun 27, 2003: Hiller UH-12E (N62417), Elk Mound, WI, destroyed. Probable cause: The pilot's failure to maintain clearance from the terrain. Factors contributing to the accident were the whirlwind, the turbulence, and the helicopter's low altitude. - [NTSB LAX03LA197](https://openairdocs.org/ntsb/LAX03LA197), Jun 13, 2003: Bell 47-G4 (N9017N), Porterville, CA, destroyed, 1 fatal. Probable cause: loss of control for undetermined reasons. - [NTSB FTW03CA146](https://openairdocs.org/ntsb/FTW03CA146), May 12, 2003: Bell 47G-4 (N4205D), Robinson, TX, substantial damage. Probable cause: The pilot's failure to maintain clearance with the ground while performing a quick stop maneuver which resulted in a dynamic rollover. - [NTSB FTW02LA186](https://openairdocs.org/ntsb/FTW02LA186), Jun 23, 2002: Bell 47G4 (N62446), Grand Lake, LA, destroyed. Probable cause: the pilot's inability to control the helicopter in a hover due to the restricted movement of the cyclic for undetermined reasons. - [NTSB ATL02FA107](https://openairdocs.org/ntsb/ATL02FA107), May 25, 2002: Bell 47G-4A (N6SR), Yauco, PR, destroyed, 1 fatal. Probable cause: The pilot's failure to apply carburetor heat that resulted in a partial loss of engine power and the subsequent collision with an object during the forced landing. A factor was weather conditions… - [NTSB CHI02LA142](https://openairdocs.org/ntsb/CHI02LA142), May 24, 2002: Bell 47G-4 (N1915B), Muncie, IN, destroyed. Probable cause: The pilot did not maintain directional control during hover taxi. Inadequate compensation for the crosswind conditions, the light rain, and the light pole were factors in the accident. - [NTSB NYC02LA090](https://openairdocs.org/ntsb/NYC02LA090), May 1, 2002: Bell 47J-2A (N37731), Blairstown, NJ, substantial damage. Probable cause: The pilot's improper flare, and his failure to maintain obstacle clearance which resulted in a tail strike. - [NTSB SEA02LA073](https://openairdocs.org/ntsb/SEA02LA073), Apr 22, 2002: Hiller UH-12E (N3004T), Goshen, OR, substantial damage. Probable cause: The failure of company maintenance personnel to identify and replace/repair the degraded exhaust stack. Contributing factors were the mis-rigged carburetor heat control and the pilot's failure to… - [NTSB ATL02LA044](https://openairdocs.org/ntsb/ATL02LA044), Feb 11, 2002: Hiller UH12E (N103HA), Miami, FL, substantial damage. Probable cause: Fatigue cracking in the main rotor hub that resulted in the separation of the main rotor system. A factor was corrosive deposits on the exposed portion of the plate set pin. - [NTSB LAX01LA276](https://openairdocs.org/ntsb/LAX01LA276), Aug 11, 2001: Bell 47G-4A (N4262Y), Strathmore, CA, destroyed. Probable cause: The pilot's inadequate visual lookout while maneuvering during an aerial application flight. - [NTSB CHI01LA238](https://openairdocs.org/ntsb/CHI01LA238), Jul 25, 2001: Hiller UH-12E (N67067), Hastings, NE, substantial damage. Probable cause: Aircraft control not being maintained by the pilot which resulted in the encountered settling with power flight condition during the initial climb. Factors to the accident were the reported variable… - [NTSB LAX01LA245](https://openairdocs.org/ntsb/LAX01LA245), Jul 13, 2001: Hiller UH-12E (N9281P), Blythe, CA, substantial damage. Probable cause: The selection by the pilot of an unsuitable precautionary landing site on soft, uneven terrain, which resulted in a rollover. - [NTSB LAX01LA196](https://openairdocs.org/ntsb/LAX01LA196), May 31, 2001: Bell 47G-4A (N110DT), Buttonwillow, CA, substantial damage. Probable cause: The pilot's inadequate in-flight planning that resulted in settling with power during an aerial application turn-to-reverse direction and collision with the ground. Factors were high density altitude… - [NTSB LAX00LA116](https://openairdocs.org/ntsb/LAX00LA116), Mar 7, 2000: Bell 47G-4A (N1354X), Wasco, CA, substantial damage. Probable cause: The pilot's failure to use carburetor heat, which resulted in a loss of engine power. Factors included the ambient carburetor icing conditions and the lack of suitable terrain for the forced landing. All 376: https://openairdocs.org/engine/lycoming-vo-540-series/ntsb.md ## FAA accident and incident reports (349, 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 20250811010179A](https://openairdocs.org/incident/20250811010179A), Aug 11, 2025: Hiller UH-12E (N703WA), Snohomish, WA, Substantial damage. Pilot stated he crossed underneath powerlines to continue spraying product then made a right sharp turn. The pilot stated that he was a little low and then met… - [Accident 20220706012029A](https://openairdocs.org/incident/20220706012029A), Jul 6, 2022: Hiller UH-12E (N130HA), Wenatchee, WA, Destroyed. Pilot was drying cherries when he made a turn and hit power lines that went through the field. After hitting the power lines the main rotor separated from the… - [Incident 20220313003179I](https://openairdocs.org/incident/20220313003179I), Mar 13, 2022: Piper PA-32-301T (N8305W), Broomfield, CO, Minor damage. On March 13, 2022 at 1850Z, N8305W maneuvered off the south side of runway 12L during the landing rollout at Rocky Mountain Metropolitan Airport (bjc). The… - [Incident 20220219002209I](https://openairdocs.org/incident/20220219002209I), Feb 19, 2022: Bell 47G-4A (N1342X), Titusville, FL, Minor damage. Pilot was with a student who had about 100 hours in helicopters. They were practicing a circling approach and student was directed to hover over the landing… - [Accident 20220209002829A](https://openairdocs.org/incident/20220209002829A), Feb 9, 2022: Hiller UH-12E4 (N64741), Stewartstown, PA, Substantial damage. On 2/9/2022, the PIC of N64741 departed harford county airfield (0W3) enroute to Shoestring airport (0P2) on a VFR flight. On arrival to 0P2, the PIC elected… - [Accident 20170820013489A](https://openairdocs.org/incident/20170820013489A), Aug 20, 2017: Bell 47G-2A (N9526), Saint Marys, PA, Substantial damage. The PIC / student pilot was flying solo for approximately 1.5 hours on the day the accident occurred. He stated that he was flying to and from the airport… - [Incident 20160805013459I](https://openairdocs.org/incident/20160805013459I), Aug 5, 2016: Piper PA-32-301T (N8305W), Everglades Park, FL, Minor damage. August 5, 2016 at approximately 11:30 am local time, N8305W, a PA-32-301T Piper saratoga fixed gear airplane, experienced an engine failure. The airplane was… - [Accident 20150725014259A](https://openairdocs.org/incident/20150725014259A), Jul 25, 2015: Bell 47G-4A (N1420W), De Queen, AR, Substantial damage. On July 25, 2015, at approximately 0730 CDT, a Bell 47G-4A, N1420W, registered to hammock flying service, inc., lifted to a hover from a platform atop a fuel… - [Accident 20150724011709A](https://openairdocs.org/incident/20150724011709A), Jul 24, 2015: Bell 47G-4A (N1396X), Gilbert, IA, Substantial damage. After completing aerial application, the pilot climbed up to an altitude of approximately 150 AGL over the corn field. The airman then nosed the aircraft over… - [Accident 20150328004619A](https://openairdocs.org/incident/20150328004619A), Mar 28, 2015: Hiller UH-12E (N130HA), Firebaugh, CA, Substantial damage. While conducting an aerial application on young almond trees the helicopter engine quit and the pilot redirected the helicopter into the wind and made an… - [Accident 20140825018029A](https://openairdocs.org/incident/20140825018029A), Aug 25, 2014: Hiller UH-12E (N4035A), Cape May County, NJ, Substantial damage. Aircraft was intiating a cruise climb climbing through 300 feet heading in a westerley direction at 50KTS when a loud bang accompanied by a vibration with a… - [Accident 20131209023649A](https://openairdocs.org/incident/20131209023649A), Dec 9, 2013: Hiller UH-12E (N36MV), Madera, CA, Substantial damage. The aircraft was performing agricultural flight operations, frost control, when the torsional coupling failed. Being at low altitude, the RPM went quickly… - [Incident 20130729014999I](https://openairdocs.org/incident/20130729014999I), Jul 29, 2013: Bell 47G-4A (N1396X), Beaman, IA, Minor damage. The airman was conducting agricultural aerial application in a cornfield. He had conducted multiple passes in this field. The field had electrical transmission… - [Accident 20120222005279A](https://openairdocs.org/incident/20120222005279A), Feb 22, 2012: Texas Helicopter Corp OH-13E/M74 (N43921), Farmington, CA, Destroyed. A ag air agricultural operator, certificate designator(mbdg) pilot [privacy data omitted] was flying solo spraying a field of wheat and while performing a turn… - [Accident 20110618012569A](https://openairdocs.org/incident/20110618012569A), Jun 18, 2011: Bell 47G-4A (N24HM), Five Miles West, MO, Substantial damage. Agricultural helicopter N24HM landed on top of the service vehicle to be serviced with fuel and product by the vehicle driver. Fuel was reportedly added to 25… - [Accident 20110325004879A](https://openairdocs.org/incident/20110325004879A), Mar 25, 2011: Hiller UH-12E (N4033P), Culpepper, VA, Substantial damage. Upon arriving at the job site to begin aerial application the pilot noted an uncommanded increase in engine RPM accompanied by a loss of lift. He reduced… - [Accident 20110226002689A](https://openairdocs.org/incident/20110226002689A), Feb 26, 2011: Hiller UH-12E (N236HA), Colusa, CA, Substantial damage. During a manuever in an almond orchard, the pilot flew the aircraft from a cross wind direction to a downwind direction during a manuever in an almond orchard,… - [Accident 20101218054619A](https://openairdocs.org/incident/20101218054619A), Dec 18, 2010: Piper PA 46-350P (N92358), Lake Elmo, MN, Substantial damage. Departed VFR from ft lauderdale FL 0830 on 12/17/2010. Landed bowling green, KY,(kbwg) flight was uneventful. Refueled 89.9 gals, mains filled (120 gals).… - [Accident 20100624036009A](https://openairdocs.org/incident/20100624036009A), Jun 24, 2010: Hiller UH-12E (N9754C), Grand Junction, CO, Substantial damage. After completing a new annual inspection the aircraft was taken for a short flight. While hover taxiing the helicopter lost power and veered toward a light… - [Accident 20100608034879A](https://openairdocs.org/incident/20100608034879A), Jun 8, 2010: Bell 47G-4A (N7069J), Shaw Island, WA, Substantial damage. On June 9, 2010, during a telephone interview with the PIC, [privacy data omitted], he stated that the helicopter, Bell 47G (N7069J) which was equipped with… - [Accident 20100202026659A](https://openairdocs.org/incident/20100202026659A), Feb 2, 2010: Hiller UH-12E (N36MV), Los Banos, CA, Substantial damage. When returning to the load truck after completion of an aerial application the pilot noticed that his throttle did not respond. The pilot was at an altitude of… - [Accident 20100122026059A](https://openairdocs.org/incident/20100122026059A), Jan 22, 2010: Bell 47G-4A (N28938), Shafter, CA, Substantial damage. Pilot stated he was nearing his first aerial application pass traveling in a northwest direction, turning and decending. Approximate altitude of 80 feet and… - [Accident 20100101025799A](https://openairdocs.org/incident/20100101025799A), Jan 1, 2010: Hiller UH-12E (N440NR), Tipton, CA, Substantial damage. Weather was overcast for the first part of the flight. When the sun came out during a swath run, the pilot propped up the collective with his knee and reached… - [Accident 20090811017449A](https://openairdocs.org/incident/20090811017449A), Aug 11, 2009: Bell 47G2A (N9526), Bangor Townshi, MI, Substantial damage. The Bell 47 departed rensselar, in airport (rzl) after topping off both fuel tanks, enroute to wabasis lake airport (M180) in greenville, MI. At approx 1530… - [Accident 20090611010329A](https://openairdocs.org/incident/20090611010329A), Jun 11, 2009: Hiller UH12E (N34SD), Stringtown, OK, Substantial damage. A mechanic at the repair facility the wreckage was taken to, advises he was told, that on the first load of the day the helicopter hopper tanks were loaded… - [Accident 20081030851229A](https://openairdocs.org/incident/20081030851229A), Oct 30, 2008: Hiller UH12E (N61436), Power River, WY, Destroyed. (-23) Control rotor blade assy shaft broke at outer attach bolt hole. - [Accident 20081011850229A](https://openairdocs.org/incident/20081011850229A), Oct 11, 2008: Bell 47J2A (N8567F), Florence, AZ, Substantial damage. (-23) The pilot and 2 passengers departed kdvt at 0900 MST en route to a remote location located at N32.59.30 W111.20.46. The pilot states that upon arrival to… - [Accident 20080815850449A](https://openairdocs.org/incident/20080815850449A), Aug 15, 2008: Hiller UH12E (N945HA), Jacksonville, FL, Destroyed. (-23) The helicopter, a Hiller UH-12E was conducting an aerial spraying application to a corn field. During the first pass over the corn field the helicopter… - [Accident 20080724850309A](https://openairdocs.org/incident/20080724850309A), Jul 24, 2008: Bell 47G4A (N24HM), Mayville, WI, Minor damage, 1 fatal. (-23) After lifting off from the chemical truck to begin spraying application, the witness on the truck stated that the aircraft was able to move forward but… - [Accident 20080407833479A](https://openairdocs.org/incident/20080407833479A), Apr 7, 2008: Hiller UH12E (N34SD), Quinton, OK, Substantial damage. (-23) On April 7, 2008, the pilot of N34SD was returning to a loading area in his helicopter, a Hiller 12E, N34SD after an aerial application in a field near… - [Accident 20080404832169A](https://openairdocs.org/incident/20080404832169A), Apr 4, 2008: Hiller UH12E (N40289), La Porte, TX, Substantial damage. (-23) Aircraft control was lost while doing hover practice in the grassy area at the approach end of runway 05 at the La Porte (T41) airport. Pilot stated he… - [Incident 20060901017779I](https://openairdocs.org/incident/20060901017779I), Sep 1, 2006: Hiller UH12E (N8402D), Luxora, AR, Minor damage. (-23) Pilot stated he was working ag operations for about 20 minutes on this flight. He made a normal field entry and was established on his spray run. The… - [Incident 20060120001549I](https://openairdocs.org/incident/20060120001549I), Jan 20, 2006: Piper PA46350P (N92358), Pensacola, FL, Minor damage. (-23) Via flight pns a/c departed foley, al enroute to bhm over beach area - approx. 15 minutes into flight engine quit without warning. Pilot executed… - [Accident 20051022027559A](https://openairdocs.org/incident/20051022027559A), Oct 22, 2005: Hiller UH12E (N909BC), Pasadena, TX, Substantial damage. (-23) Pilot stated that the aircraft lost power. As the aircraft was in autorotation it hit a petroleum coke mound at about the 200 foot mark and rolled down… - [Accident 20050921020819A](https://openairdocs.org/incident/20050921020819A), Sep 21, 2005: Hiller UH12E (N141HA), Five Points, CA, Substantial damage. (-23) On 9/21/2005, at approximately 2200 hours PDT, Hiller UH-12E helicopter, N141HA, crashed approximately 12.5 miles west of Five Points, CA. N141HA,… - [Accident 20050525010219A](https://openairdocs.org/incident/20050525010219A), May 25, 2005: Bell 47G4A (N110DT), Buttonwillow, CA, Destroyed. (-23) The pilot knew that the power lines were near the edge of the field but failed to miss them as he approached the cotton field on his second pass. An… - [Accident 20050523011759A](https://openairdocs.org/incident/20050523011759A), May 23, 2005: Hiller UH12E (N3030H), Estacada, OR, Substantial damage. (-23) During takeoff from a trailer, prior to commencing aerial application operations, the aircraft encountered a gust of wind from the left causing an… - [Accident 20040731017899A](https://openairdocs.org/incident/20040731017899A), Jul 31, 2004: Bell 47G2 (N7892B), La Porte, TX, Destroyed. (-23) On July 31, 2004, approximately 1900 central daylight time, a Bell 47-G2 single-engine helicopter, N7892B, was destroyed during a precautionary… - [Accident 20040426009029A](https://openairdocs.org/incident/20040426009029A), Apr 26, 2004: Hiller UH12E (N9785C), Haines, OR, Substantial damage. (-23) While returning to his main base following an aerial application job, at approximately 100 feet or less AGL the pilot heard a loud bang in the helicopter… - [Accident 20040403004479A](https://openairdocs.org/incident/20040403004479A), Apr 3, 2004: Bell 47G4A (N7NB), Shafter, CA, Substantial damage. (-23) During aerial application, the rotorcraft experienced loss of tail rotor authority. Further investigation revealed that all hangar bearings,… - [Incident 20040319006589I](https://openairdocs.org/incident/20040319006589I), Mar 19, 2004: Bell 47G4A (N55ZD), Detroit, MI, Minor damage. (-23) Number 4 connecting rod failed. In level flight helicopter lost power. The pilot autorotated to a safe landing in the grass along the south side of… - [Accident 20030909036289A](https://openairdocs.org/incident/20030909036289A), Sep 9, 2003: Hiller UH12E (N9792C), Kekaha, HI, Destroyed. (-23) This was a part 137 aerial application operation on the island of kauai, vicinity of barking sands, pmfr. The PIC was not aware wires were in the… - [Accident 20030627013009A](https://openairdocs.org/incident/20030627013009A), Jun 27, 2003: Hiller UH12E (N62417), Elk Mound, WI, Destroyed. (-23) While applying fungicide to a field of potatoes, the helicopter encountered a whirlwind, causing the pilot to lose control and contact the crop with the… - [Accident 20030613011409A](https://openairdocs.org/incident/20030613011409A), Jun 13, 2003: Bell 47G4 (N9017N), Portervill, CA, Destroyed, 1 fatal. (-23) After completing application on a field the pilot returned to truck for fuel and chemical for the next corn field. Instead of flying west to the next… - [Accident 20030512011309A](https://openairdocs.org/incident/20030512011309A), May 12, 2003: Bell 47G4 (N4205D), Levi, TX, Substantial damage. (-23) The pilot stated that he was doing a quick stop maneuver when the tail impacted the ground. The helicopter then made a very hard landing on the left skid… - [Incident 20020807025629I](https://openairdocs.org/incident/20020807025629I), Aug 7, 2002: Piper PA32R301T (N8306E), Miami, FL. (-23) After further investigation at wes air in opf, this office found that the engine exhausted all of the oil through the hose that is between the… - [Accident 20020623015009A](https://openairdocs.org/incident/20020623015009A), Jun 23, 2002: Bell 47G4A (N62446), Grandlake, LA, No damage. (-23) During take off from an unimproved landing area a passenger blocked the cyclic control resulting in the right skid contacting the ground. The aircraft… - [Accident 20020525015489A](https://openairdocs.org/incident/20020525015489A), May 25, 2002: Bell 47G4A (N6SR), Yauco, Puerto Rico, No damage, 1 fatal. (-23) During cruise flight pilot noticed partial loss of engine power, he also noticed engine oil pressure reading low. Pilot decided to do a precautionary… - [Accident 20020524019919A](https://openairdocs.org/incident/20020524019919A), May 24, 2002: Bell 47G4 (N1915B), Muncie, IN, Destroyed. (.19) On may 24, 2002, at 1420 central daylight time, helicopter Bell 47G-4, N1915B, owned and piloted by a commercial pilot, was destroyed when the main rotor… - [Accident 20020501012289A](https://openairdocs.org/incident/20020501012289A), May 1, 2002: Bell 47J2A (N37731), Blairstown, NJ, Substantial damage. (.19) On may 1, 2002, about 1430 eastern daylight time, a Bell 47J-2A helicopter, N37731, was substantially damaged while landing at the Blairstown Airport,… All 349: https://openairdocs.org/engine/lycoming-vo-540-series/incidents.md ## Service difficulty reports (1) As reported by operators and repair stations, by the model named in the report. - [SDR 2008FA0000372](https://openairdocs.org/sdr/2008FA0000372), May 14, 2008: RETAINER. MISMANUFACTURED. RETAINER SUSPECTED LOCALLY MADE INSTALLATION WORD "UP" IS NOT STAMPED ON PART BUT ETCHED ON BY HAND. THICKNESS OF RETAINER IS .045, ACTUAL PART THICKNESS OF NEW ## STCs that may be installed (OpenAirDocs) (22) 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. Lists VO-540-B1A - [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 - [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd. Lists VO-540-A1A - [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company. Lists VO-540-A1A - [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. Lists VO-540-A1A - [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp. Lists VO-540-A1A - [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc - [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc - [STC SE2902NM](https://openairdocs.org/stc/SE2902NM): Lycoming valve cover gasket. Real Gaskets Tennessee. Lists VO-540-A1A - [STC SE7582SW](https://openairdocs.org/stc/SE7582SW): Grinding of high compression NITRIDED Cylinders to .010 oversize, as an alternative to chrome plating or rebarreling, and the installation of SL10207 P10 Piston, SL74241 P10 Top and second compression ring, and SL 73857 P10 oil control ring. Superior Air Parts, Inc. Lists VO-540-C1A - [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc. Lists VO-540-A1A - [STC SE00890LA](https://openairdocs.org/stc/SE00890LA): Installation of Nickson's cylinder barrels on Lycoming reciprocating engine models. Nickson's Machine Shop Inc - [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 VO-540-B1A - [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 - [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation. Lists VO-540-A1A - [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co - [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp - [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 - [STC SE5924SW](https://openairdocs.org/stc/SE5924SW): Installation of stainless steel replacement exhaust studs on AVCO engines. Perrigo & Steele Aircraft Engr Company - [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 - [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines. AMS/OIL - [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 ## 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 - [ES66M19385](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID186804045820251216184409.0001): Clamp, Magneto. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 66M19385 · Nov 10, 2025 - [ES10-400567](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182838314420251216184405.0001): Bearing, Ball. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-400567 · Nov 10, 2025 - [ES10-349249](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID172741321620251216184404.0001): Washer, Bowed. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349249 · Nov 10, 2025 - [ES-349290-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID165991096120251216184350.0001): Magneto Assembly, S-1200, Series, 6 Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW-349290-4, LW-349290-4D, 75898… · Nov 10, 2025 - [ES10-349247](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID155835169920251216184407.0001): Retainer, Bearing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349247 · Nov 10, 2025 - [ES10-78655](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID148578074420251216184359.0001): Washer, Flat. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-78655 · Nov 10, 2025 - [ES-349290-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID142395968320251216184350.0001): Magneto Assembly, S-1200 Series, 6 Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW-349290-3, LW-349290-3D, 75456… · Nov 10, 2025 - [ES10-35937-24](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID131353354520251216184356.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-35937-24 · Nov 10, 2025 - [ES-349310-10](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID124173382220251216184352.0001): Magneto Assembly, S-1200 Series, 6 Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW-349310-10, 10-349310-10… · Nov 10, 2025 - [ES10-5752](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID115793636520251216184401.0001): Cable, Clip. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-5752 · Nov 10, 2025 - [ES10-349328](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID114147850320251216184403.0001): Flat Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349328 · Nov 10, 2025 - [ES10-349221](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID111222593020251216184358.0001): Stud, Hex 10-32. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349221 · Nov 10, 2025 - [ES10-349242](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID110743662720251216184408.0001): Gear, Spur, 1200 Series, 6-Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349242 · Nov 10, 2025 - [ES10-349243-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID108636864620251216184402.0001): Cam, 1200. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349243-2 · Nov 10, 2025 - [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 - [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 - [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-349652](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146517788120251216184438.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-349652 · 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 All of them: https://openairdocs.org/engine/lycoming-vo-540-series/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.