# Lycoming TIO-540-C1A

- Type: Engine model (FAA registry)
- Registry code: 41984
- Manufacturer (registry): LYCOMING
- Model: TIO-540-C1A
- Engine type: Reciprocating
- Power: 250 hp
- Data sheet: [TCDS E14EA](https://openairdocs.org/tcds/E14EA) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 10 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-tio-540-c1a

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 2026-04-11](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 2015-19-07](https://openairdocs.org/ad/2015-19-07): Fuel injector fuel lines · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 187 more. Effective Nov 3, 2015
- [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 2012-03-06](https://openairdocs.org/ad/2012-03-06): Fuel servo diaphragm · Continental Motors 6-260-A, 6-285-A, 6-285-B and 482 more. Effective Feb 24, 2012
- [AD 2010-07-08](https://openairdocs.org/ad/2010-07-08): Turbochargers · Kelly Aerospace Energy Systems HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 137 more. Effective Apr 19, 2010
- [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 2009-02-03](https://openairdocs.org/ad/2009-02-03): Fuel injection servos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 261 more. Effective Feb 9, 2009
- [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 2003-14-03](https://openairdocs.org/ad/2003-14-03): Rotary fuel pumps · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 262 more. Effective Aug 14, 2003
- [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 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 91-08-07](https://openairdocs.org/ad/91-08-07): Fuel Pump · Lycoming Engines TIO-360-A1A, TIO-360-A1B, TIO-360-A3B6 and 51 more. Effective May 6, 1991
- [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 79-04-05](https://openairdocs.org/ad/79-04-05): Regulator Diaphragm Stem Assembly · Lycoming Engines AEIO-320-D1B, AEIO-320-E1A, AEIO-320-E1B and 215 more. Effective Sep 26, 1979
- [AD 78-23-10](https://openairdocs.org/ad/78-23-10): Center Body Bellows Seal Assembly · Lycoming Engines AEIO-320-D1B, AEIO-320-E1A, AEIO-320-E1B and 218 more. Effective Nov 7, 1978
- [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 75-09-15](https://openairdocs.org/ad/75-09-15): Fuel Starvation To The Engine · Lycoming Engines AIO-320-A1A, AIO-320-A1B, AIO-320-A2A and 130 more. Effective Apr 30, 1975
- [AD 73-10-02](https://openairdocs.org/ad/73-10-02): Bendix Fuel Injectors · Bendix Fuel Injectors, AIO-320-A1A, AIO-320-A1B and 88 more. Effective May 16, 1973

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 2011-26-04](https://openairdocs.org/ad/2011-26-04) (historical): Externally mounted fuel injector fuel lines · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 186 more. Effective Jan 25, 2012
- [AD 2011-15-10](https://openairdocs.org/ad/2011-15-10) (historical): Fuel servos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 256 more. Effective Aug 16, 2011
- [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 2008-14-07](https://openairdocs.org/ad/2008-14-07) (historical): Externally mounted fuel injector fuel lines · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 185 more. Effective Aug 14, 2008
- [AD 2008-08-14](https://openairdocs.org/ad/2008-08-14) (historical): Fuel injection servo plugs · Superior Air Parts AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 242 more. Effective Apr 29, 2008
- [AD 2008-06-51](https://openairdocs.org/ad/2008-06-51) (historical): Fuel injection servo plugs · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 235 more
- [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 2002-26-01](https://openairdocs.org/ad/2002-26-01) (historical): Fuel injector fuel lines · Textron Lycoming, AVCO IGO-480-A1B6, IGO-540-B1A, IGO-540-B1C and 178 more. Effective Jan 31, 2003
- [AD 2002-23-06](https://openairdocs.org/ad/2002-23-06) (historical): Crankshaft gear retaining bolts · Textron Lycoming, AVCO AEIO-540, AEIO-540-D4A5, AEIO-540-D4B5 and 46 more. Effective Nov 19, 2002
- [AD 2002-20-51](https://openairdocs.org/ad/2002-20-51) (historical): Crankshaft gear retaining bolts · Textron Lycoming, AVCO AEIO-540, IO-540 Series (all), LTIO-540-F2BD and 39 more
- [AD 2002-17-53](https://openairdocs.org/ad/2002-17-53) (historical): Crankshaft · Lycoming Engines LTIO-540-F2BD, LTIO-540-J2B, LTIO-540-J2BD and 36 more
- [AD 98-18-12](https://openairdocs.org/ad/98-18-12) (historical): Fuel Pump · Textron Lycoming, AVCO AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 249 more. Effective Sep 28, 1998

## 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-09-04](https://openairdocs.org/saib/NE-09-04): Fuel Control/Reciprocating Engines. Issued Jan 10, 2009
- [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 (10)

- [N315NY](https://openairdocs.org/aircraft/N315NY): [Pacific Fleet Aviation LLC](https://openairdocs.org/faa-owner/PACIFIC%20FLEET%20AVIATION%20LLC), [Rochester, NY](https://openairdocs.org/faa-place/NY/Rochester), built 1977, S/N 27-7754031
- [N375AZ](https://openairdocs.org/aircraft/N375AZ): Guatemala City, S/N 27-7854038, Sale reported
- [N40588](https://openairdocs.org/aircraft/N40588): [Csc Delaware Trust Co Trustee](https://openairdocs.org/faa-owner/CSC%20DELAWARE%20TRUST%20CO%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1974, S/N 27-7405332
- [N51JN](https://openairdocs.org/aircraft/N51JN): [Naylor Aviation LLC](https://openairdocs.org/faa-owner/NAYLOR%20AVIATION%20LLC), [Scotch Grove, IA](https://openairdocs.org/faa-place/IA/Scotch%20Grove), built 1978, S/N 27-7854128
- [N6879A](https://openairdocs.org/aircraft/N6879A): [Scruggs Ken R](https://openairdocs.org/faa-owner/SCRUGGS%20KEN%20R), [Plain City, OH](https://openairdocs.org/faa-place/OH/Plain%20City), S/N 27-7954104
- [N71AT](https://openairdocs.org/aircraft/N71AT): [Airtahoe LLC](https://openairdocs.org/faa-owner/AIRTAHOE%20LLC), [Crystal Bay, NV](https://openairdocs.org/faa-place/NV/Crystal%20Bay), built 2014, S/N 0014Y
- [N77KK](https://openairdocs.org/aircraft/N77KK): [Mensch Aviation LLC](https://openairdocs.org/faa-owner/MENSCH%20AVIATION%20LLC), [Hastings, MI](https://openairdocs.org/faa-place/MI/Hastings), built 1980, S/N 278154002
- [N78LJ](https://openairdocs.org/aircraft/N78LJ): [Valiair Lc](https://openairdocs.org/faa-owner/VALIAIR%20LC), [Casper, WY](https://openairdocs.org/faa-place/WY/Casper), built 1973, S/N 27-7304943
- [N89VV](https://openairdocs.org/aircraft/N89VV): [Adams Aviation Services Inc Trustee](https://openairdocs.org/faa-owner/ADAMS%20AVIATION%20SERVICES%20INC%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1973, S/N 27-7405254
- [N964MM](https://openairdocs.org/aircraft/N964MM): [Modular Aviation LLC](https://openairdocs.org/faa-owner/MODULAR%20AVIATION%20LLC), [Saratoga Springs, UT](https://openairdocs.org/faa-place/UT/Saratoga%20Springs), built 1978, S/N 27-7854132

## NTSB investigations

None matched to aircraft with this engine model.

## FAA accident and incident reports (1)

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.

- [Incident 19790719019309I](https://openairdocs.org/incident/19790719019309I), Jul 19, 1979: Piper PA23250 (N14376), Colorado Spring, CO, Minor damage. Pilots failed to check position of gear handle and gear retraction on takeoff roll.

## Service difficulty reports (37)

As reported by operators and repair stations, by the model named in the report.

- [SDR HYIA20230215002](https://openairdocs.org/sdr/HYIA20230215002), Jan 25, 2023: FUEL RAIL. LEAKING. PILOT REPORTED FUEL SMELL DURING FLIGHT. MAINTENANCE INSPECTED AND WHILE TROUBLESHOOTING FOUND RIGHT ENGINE INBOARD FUEL RAIL LEAKING AT WELD IN VICINITY OF #2 
- [SDR 2016FA0000292](https://openairdocs.org/sdr/2016FA0000292), Jun 14, 2016: ATTACH BOLT. SHEARED. UPON UNEVENTFUL LANDING ON ROLLOUT, RT GEAR COLLAPSED. UPON INSPECTION FOUND CENTER MAIN GEAR DRAG LINK BOLT, PN 691-327, ALTERNATE PN NAS6607D38, SHEARED ALLOW
- [SDR CA141202034](https://openairdocs.org/sdr/CA141202034), Nov 27, 2014: SUPPORT TUBE. CRACKED. (CAN) DURING A 100 HR INSPECTION THE DRAG LINK FITTING SUPPORT TUBE ASSEMBLY (P/N 1742002) WAS FOUND CRACKED AT THE AFT LOWER ATTACH BOLT HOLE.
- [SDR CA120518007](https://openairdocs.org/sdr/CA120518007), May 17, 2012: BOLT. MISSING. (CAN) OIL SUMP BOLTS FOR THE TURBO EXHAUST STAYS ON BOTH ENGINES, LT SNAPPED, RT MISSING. CAUSED THE EXHAUST STAY TO WEAR INTO THE OIL SUMPS, PAINT WEAR ON LT E
- [SDR CA120321010](https://openairdocs.org/sdr/CA120321010), Mar 13, 2012: NUT. LOOSE. (CAN) DIAPHRAM LEAKING AT PLUNGER NUT. NUT FOUND LOOSE.
- [SDR CA120307008](https://openairdocs.org/sdr/CA120307008), Mar 6, 2012: WHEEL HALF. CRACKED. (CAN) MULTIPLE RADIAL CRACKS EMINATING FROM THE CENTER OF THE WHEEL WHERE THE BEARING CUP SITS.
- [SDR CA120307009](https://openairdocs.org/sdr/CA120307009), Mar 6, 2012: WHEEL HALF. CRACKED. (CAN) 4" CRACK ON BEAD OF INNER WHEEL HALF OF THE MAIN WHEEL ASSY.
- [SDR CA110808007](https://openairdocs.org/sdr/CA110808007), Aug 1, 2011: TRIM SYSTEM. BINDING. DURING SLOW CRUISE OPERATION AT ALTITUDE, THE STABILATOR TRIM WAS MOVED NOSE UP. WHEN THE PILOT APPLIED POWER TO RESUME NORMAL FLIGHT OPERATIONS, THE ACFT DID N
- [SDR CA111117007](https://openairdocs.org/sdr/CA111117007), May 19, 2011: GOVERNOR. LEAKING. (CAN) OIL LEAK FOUND AT PROPELLER GOVERNOR HEAD GASKET AT INSPECTION.
- [SDR 2010FA0000072](https://openairdocs.org/sdr/2010FA0000072), Jan 26, 2010: LINE. LOOSE. ON APPROACH, TOWER NOTIFIED ACFT THAT SMOKE WAS COMING OUT OF THE LT ENGINE. ON LANDING, LT ENGINE WAS SHUTDOWN AND ACFT TAXIED OFF THE ACTIVE RUNWAY. ACFT WAS 
- [SDR CA080625002](https://openairdocs.org/sdr/CA080625002), Apr 29, 2008: CONNECTOR. LOOSE. (CAN) HYDR FLUID NOTED LEAKING FROM MANUAL HYDR HAND PUMP UPON POST-TAKEOFF GEAR RETRACTION. ATTEMPT TO RE-EXTEND GEAR WITH STANDARD SYS OR MANUAL HAND PUMP FAI
- [SDR FCPR20070110](https://openairdocs.org/sdr/FCPR20070110), Dec 8, 2007: DIAPHRAGM. FAILED. PUMP VALVE REGULATOR DIAPHRAGM FAILED AT GUIDE PIN, PUMP WOULD NOT FUNCTION.
- [SDR CA070918005](https://openairdocs.org/sdr/CA070918005), Sep 7, 2007: PISTON RING. DAMAGED. (CAN) THE PROBLEM STARTED WITH HIGH OIL TEMP ON LT ENG, NEAR THE RED LINE IN TURBOBOOST AND WITH SMALL SPLIT OF MANIFOLD PRESS BETWEEN BOTH ENGINES. WE TROUBLES
- [SDR 2006FA0001208](https://openairdocs.org/sdr/2006FA0001208), Oct 10, 2006: LINE. LEAKING. FUEL LEAKING, TURBOCHARGER AIR LINE TO FUEL PUMP. (K)
- [SDR 2006FA0001209](https://openairdocs.org/sdr/2006FA0001209), Oct 10, 2006: LINE. LEAKING. FUEL LEAKING OUT TURBOCHARGER AIR LINE TO FUEL PUMP. (K)
- [SDR 2006FA0001210](https://openairdocs.org/sdr/2006FA0001210), Oct 10, 2006: TURBOCHARGER. LEAKING. FUEL LEAKING OUT TURBOCHARGER AIR LINE TO FUEL PUMP. (K)
- [SDR 2006FA0001211](https://openairdocs.org/sdr/2006FA0001211), Oct 10, 2006: LINE. LEAKING. FUEL LEAKING OUT TURBOCHARGER AIR LINE TO FUEL PUMP. (K)
- [SDR CA060817006](https://openairdocs.org/sdr/CA060817006), Aug 4, 2006: RING. DELAMINATED. (CAN) THE TECHNICIANS OBSERVED AN ABNORMAL LOSS OF COMPRESSION ON SOME CYLINDERS FOLLOWING A ROUTINE INSPECTION. THEY REMOVED THE CYLINDERS AND SENT THEM TO OUR
- [SDR CA040601004](https://openairdocs.org/sdr/CA040601004), May 20, 2004: GEAR. BROKEN. RIGHT ENGINE STOP DURING FLIGHT. FOUND SPRING PIN OF CRANKSHAFT GEAR BROKEN. WHEN THE CRANKSHAFT WAS REMOVED, THE CHANKSHAFT BOLT SHEARED AND BROKE EASILY. THIS
- [SDR 2004FA0000789](https://openairdocs.org/sdr/2004FA0000789), Apr 28, 2004: PUMP. FAILED. FUEL LEAKING INTO MANIFOLD REFERENCE LINE. PILOT EXPERIENCED INFLIGHT ROUGH ENGINE WHEN AUXILIARY FUEL PUMP WAS TURNED ON. FUEL CONTINUED TO RUN ONTO THE GROUND
- [SDR 2004FA0000790](https://openairdocs.org/sdr/2004FA0000790), Apr 28, 2004: PUMP. FAILED. FUEL LEAKING INTO MANIFOLD REFERENCE LINE. PILOT EXPERIENCED INFLIGHT ROUGH ENGINE WHEN AUXILIARY FUEL PUMP TURNED ON. FUEL CONTINUED TO RUN ON GROUND AFTER ENG
- [SDR 2003FA0001116](https://openairdocs.org/sdr/2003FA0001116), Oct 8, 2003: COUPLING. MISMANUFACTURED. EXHAUST V-BAND COUPLING NEEDED FOR TURBOCHARGER OUTLET/ TAILPIPE CONNECTION ON THIS AC. ORIGINAL PN 555-511 WAS SUPERSEDED BY MFG TO THE PN 557-584 WILL NOT WOR
- [SDR CA030401001](https://openairdocs.org/sdr/CA030401001), Mar 31, 2003: TUBE. CRACKED. (CAN) THREE CRACKS WERE FOUND ON THE RT MLG OUTBOARD TUBE ASSEMBLY OF THE DRAG LINK FITTING SUPPORT. THE CRACKS ARE LOCATED AROUND THE LOWER MOUNTING BOLT HOLE 
- [SDR CA030401002](https://openairdocs.org/sdr/CA030401002), Mar 31, 2003: FITTING. CRACKED. (CAN) THREE CRACKS WERE FOUND ON THE RIGHT MAIN LANDING GEAR OUTBOARD TUBE ASSEMBLY P/N 1742002 OF THE DRAG LINK FITTING SUPPORT. THE CRACKS ARE LOCATED AROUND 
- [SDR CA021115023](https://openairdocs.org/sdr/CA021115023), Nov 15, 2002: RIB. CRACKED. (CAN) DURING 100 HOURS INSPECTION, FOUND RT AILERON INBOARD TRAILING EDGE RIB CRACKED AROUND BOTTOM MOUNTING NUT. UPON REMOVAL OF RIB, THE AILERON SPAR IS ALSO 
- [SDR CA021115024](https://openairdocs.org/sdr/CA021115024), Nov 15, 2002: SPAR. CRACKED. (CAN) FOUND RT AILERON INBOARD TRAILING EDGE RIB CRACKED AROUND BOTTOM MOUNTING HOLE.UPON REMOVAL OF RIB, FOUND SPAR IS ALSO HAS A 1/2 INCH CRACKED BESIDE BOTTO
- [SDR 2002FA0000911](https://openairdocs.org/sdr/2002FA0000911), Jul 17, 2002: WASTEGATE VALVE. SEPARATED. LT ENGINE EXHAUST BACK PRESSURE SEPARATED (PN LW 11657) WASTE GATE MALE FROM (PN LW 11656) FEMALE. (PN LW 1165) U BOLT WAS NOT LOOSE.
- [SDR 2001FA0000584](https://openairdocs.org/sdr/2001FA0000584), Nov 14, 2001: CYLINDER. DELAMINATED. LYCOMING CYLINDER PN LW12429 WITH A CERMINILL COATING FROM ECI DELAMINATED. THE AREA WAS ABOUT 1.5 INCHES IN LENGTH AND ABOUT .250 WIDE AT THE TOP OF THE CYLIND
- [SDR 20000330SH006](https://openairdocs.org/sdr/20000330SH006), Mar 22, 2000: DIPSTICK. SEPARATED. PILOT REPORTED TO REPAIR SHOP, THAT AFTER LANDING, HE HAD AN OIL LEAK IN THE ENGINE AREA. AFTER INSPECTION, FOUND THAT DIP ROD IN THE OIL CAP WAS NOT INSTALLED 
- [SDR 99ZZZX119](https://openairdocs.org/sdr/99ZZZX119), Dec 8, 1998: TURBINE WHEEL. FAILED. TURBO REMOVED AND INSPECTED. FOUND SHAFT BROKEN BETWEEN TURBINE AND COMPRESSOR BLADES. TURBINE BLADES WERE NOT FOUND ON THE SHAFT THAT TURBINE BLADES WERE ON. T
- [SDR CA980325015](https://openairdocs.org/sdr/CA980325015), Mar 10, 1998: ROD END. LOOSE. (CAN) ACTUATOR ROD END FELL OFF DURING APPROACH CAUSING THE FLAPS TO RETRACT. LANDING COMPLETED WITHOUT INCIDENT. DAMAGE INCLUDED BREAKING P/N 17320-00 BLOCK AN
- [SDR 97ZZZX1710](https://openairdocs.org/sdr/97ZZZX1710), Apr 2, 1997: RETAIN RING. DISLODGED. EXTERNAL RETAINING RING THAT HOLDS THE TURBO SCAVENGE PUMP DRIVEN GEAR IN PLACE DISLODGED ALLOWING GEAR TO DISENGAGE WITH SUBSEQUENT PUMP FAILURE. WITH SCAVENGE
- [SDR 97ZZZX1946](https://openairdocs.org/sdr/97ZZZX1946), Apr 2, 1997: PUMP. LEAK. PUMP LEAKAGE AT SEAM CASE TO PUMP. PUMP LEAKAGE OCCURRED AT TAKEOFF. SPRAYED FUEL DIRECTLY ON HOT TURBOCHARGER CAUSING FIRE IN ENGINE COMPARTMENT. APPEARED TO L
- [SDR CA961216039](https://openairdocs.org/sdr/CA961216039), Dec 4, 1996: VALVE STEM. DISLODGED. (CAN) PILOT REPORTED PROP RPM FLUCTUATIONS ON PREVIOUS FLIGHT. ON NEXT FLIGHT REPORTED NO PROP CONTROL WITH PROP LEVER. PILOT ABORTED FLIGHT. INSPECTION FOUND B
- [SDR AU960925](https://openairdocs.org/sdr/AU960925), Jun 17, 1996: BEARING. SEIZED. (AUS) ENGINE NO1 MAIN BEARING SEIZED TO CRANKSHAFT DURING START - ENGINE HAD DONE 17.5 HOURS SINCE A TOP OVERHAUL WAS CARRIED OUT
- [SDR 96ZZZX3757](https://openairdocs.org/sdr/96ZZZX3757), Mar 18, 1996: MAGNETO. FAILED. MAGNETO WAS FOUND WITH DRIVE NUT HAVING NO THREADS AND NO THREADS ON DRIVE.
- [SDR 95ZZZX1974](https://openairdocs.org/sdr/95ZZZX1974), Mar 28, 1995: GEROTOR. SEIZED. TURBO SCAVANGE PUMP FAILED. APPEARS THAT THE ROTOR CRACKED WHICH, IN TURN, SHEARED AN ANTI-ROTATION PIN IN THE PUMP HOUSING IN WHICH THE GEROTOR TURNS. THE HOUS

## STCs that may be installed (OpenAirDocs) (29)

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 SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. B & C Specialty Products Inc
- [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 SE2667CE](https://openairdocs.org/stc/SE2667CE): Installation of B&C Specialty Products lightweight (10.2 pounds) engine starter PN BC315-100-2(12 volt) or PN BC315-100-4 (24 volt). B & C Specialty Products Inc
- [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 SE09445SC](https://openairdocs.org/stc/SE09445SC): Installation of fuel injector nozzles. General Aviation Modifications Inc. Lists TIO-540 Series
- [STC SE7503SW](https://openairdocs.org/stc/SE7503SW): Installation of any or all parts listed on Airmotive Engineering Drawing List No. 852-1, Rev. 1, dated 10/4/88, or later FAA approved revision. Continental Motors, Inc. Lists TIO-540 Series
- [STC SE7668SW](https://openairdocs.org/stc/SE7668SW): Installation of parts listed on Drawing List 8810-3, Rev 6. Continental Motors, Inc. Lists TIO-540 Series
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists TIO-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 SE02555AT](https://openairdocs.org/stc/SE02555AT): Consolidated Fuel Systems 201F series fuel pump assembly on various Textron Lycoming engine models. Kelly Aerospace Energy Systems LLC
- [STC SE445GL](https://openairdocs.org/stc/SE445GL): Incorporation of a fuel flow transducer. Shadin Avionics
- [STC SE01930NY](https://openairdocs.org/stc/SE01930NY): Installation of Casper Labs 90 degree oil filter housing adapter. Casper Labs Inc
- [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 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 TIO-540 Series
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation
- [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co. Lists TIO-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 TIO-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 TIO-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 TIO-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 TIO-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.

- [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
- [ES10-180046-28](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID170373951520251216184357.0001): Sleeve, Clear. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-180046-28 · 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
- [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-349290-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID124195582920251216184349.0001): Magneto Assembly, S-1200 Series, 6 Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW-349290-1, LW-349290-1D, 75454… · Nov 10, 2025
- [ES-349310-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117952123520251216184351.0001): Magneto Assembly, S-1200 Series, 6 Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW-349310-1, LW-349310-1D, 75453… · 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
- [CFRS16803-137](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135831136720251002184910.0001): Liner. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces RS16803-137 · Sep 2, 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
- [AE1003](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID179565848920250908153019.0001): Drive End Housing. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number A2E1003K · 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
- [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
- [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
- [RA7791ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID148564474720250127211204.0001): Rotor, Pump. Aircraft Component Design LLC · PMA PQ2138NE · Replaces RA7791 · Jan 6, 2025
- [FFT-PLG-003](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID195538759920240801144311.0001): Cam End Plug. Centri-Lube Technologies LLC · PMA PQ2043NM · Modification part · Jul 16, 2024
- [FFT-PLG-004](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162830829420240801144312.0001): Cam End Plug. Centri-Lube Technologies LLC · PMA PQ2043NM · Modification part · Jul 16, 2024
- [AA48111-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120682187320240813134136.0001): Oil Filter. Aero Accessories LLC · PMA PQ1206CE · Replaces Aero AccessoriesAA48111Champion… · Jul 12, 2024
- [CF73966](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178353257420240715164040.0001): Spacer. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces 73966 · Jun 24, 2024
- [CF75009](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID147128829420240715164042.0001): Bracket, Fuel Manifold. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces 75009 · Jun 24, 2024
- [CF07A23031](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136616521920240715164043.0001): Bracket, Fuel Manifold. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces 07A23031 · Jun 24, 2024
- [CFSTD-251](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129676558220240715164045.0001): Washer, #10 Lock, Internal Teeth. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces STD-251 · Jun 24, 2024
- [CFSTD-82](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID123933662120240715164045.0001): Screw,   #10-24 X 1/2, RD HD. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces STD-82 · Jun 24, 2024
- [KA16493](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID190166752920240919140746.0001): Left Manifold Assembly. Aerospace Welding Minneapolis, Inc. · PMA PQ2712CE · Replaces LW-16493 · Jun 21, 2024
- [KAl6902](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189055903620240919140747.0001): Flange. Aerospace Welding Minneapolis, Inc. · PMA PQ2712CE · Replaces LW-16902, LW-16491 · Jun 21, 2024
- [KA16493-06](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188554574020240919140747.0001): Left Manifold Assembly. Aerospace Welding Minneapolis, Inc. · PMA PQ2712CE · Replaces LW-78687 · Jun 21, 2024
- [KA16493-08](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157763246320240919140747.0001): Adapter, Exhaust Pipe Cylinder Head. Aerospace Welding Minneapolis, Inc. · PMA PQ2712CE · Replaces LW-78054 · Jun 21, 2024
- [KA16493-04](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID154715632420240919140747.0001): Pipe, Exhaust. Aerospace Welding Minneapolis, Inc. · PMA PQ2712CE · Replaces LW-16492 · Jun 21, 2024
- [KA78064](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146046988220240919140747.0001): Flange. Aerospace Welding Minneapolis, Inc. · PMA PQ2712CE · Replaces 78064 · Jun 21, 2024
- [KA16493-02](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID130661734520240919140746.0001): Pipe, Exhaust. Aerospace Welding Minneapolis, Inc. · PMA PQ2712CE · Replaces LW-12281 · Jun 21, 2024
- [201F-5001](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163992869220240701174359.0001): Fuel Pump. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Lear RomecRG17980/MLycoming… · Jun 20, 2024
- [200F-5005](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136991488520240701174359.0001): Fuel Pump. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Lear RomecRG9080J8A/MLycoming… · Jun 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
- [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

All of them: https://openairdocs.org/engine/lycoming-tio-540-c1a/pma.md

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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.