# Lycoming IO-540-K1J5

- Type: Engine model (FAA registry)
- Registry code: 41676
- Manufacturer (registry): LYCOMING
- Model: IO-540-K1J5
- Engine type: Reciprocating
- Power: 300 hp
- Data sheet: [TCDS 1E4](https://openairdocs.org/tcds/1E4) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 10 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-io-540-k1j5

Model codes come from the FAA registry's reference file.

## ADs that may apply (OpenAirDocs)

Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 2026-17-10](https://openairdocs.org/ad/2026-17-10): Reciprocating Engine Cylinder Section · Lycoming Engines O-235, O-235-A, O-235-AP and 159 more. Effective Sep 14, 2026
- [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026
- [AD 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 2017-16-11](https://openairdocs.org/ad/2017-16-11): Reciprocating Engine Power Section · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-360-B1G6 and 93 more. Effective Aug 15, 2017
- [AD 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 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 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 2002-19-03](https://openairdocs.org/ad/2002-19-03): Crankshaft · Lycoming Engines IO-540-A1A5, IO-540-AA1A5, IO-540-AA1B5 and 81 more. Effective Sep 20, 2002
- [AD 97-15-11](https://openairdocs.org/ad/97-15-11): Cylinder kits · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 538 more. Effective Aug 12, 1997
- [AD 96-23-03](https://openairdocs.org/ad/96-23-03): High pressure fuel pumps · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 174 more. Effective Dec 23, 1996
- [AD 96-09-10](https://openairdocs.org/ad/96-09-10): Oil pump · Lycoming Engines AEIO-320-E1A, AEIO-320-E1B, AEIO-320-E2A and 334 more. Effective Jul 15, 1996
- [AD 95-26-02](https://openairdocs.org/ad/95-26-02): Aviation Gasoline · Lycoming Engines IO-320-B1A, IO-320-B1B, IO-320-B1C and 182 more. Effective Jan 24, 1996
- [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 83-22-04](https://openairdocs.org/ad/83-22-04): Injector Fuel Diaphragm Stem · Lycoming Engines AEIO-540-L1B5D, IO-540-AA1A5, IO-540-G1B5 and 30 more. Effective Nov 4, 1983
- [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 75-08-09](https://openairdocs.org/ad/75-08-09): Oil Pump Drive Shaft · Lycoming Engines AEIO-360-A1B, AEIO-360-A1B6, AEIO-360-A1C and 365 more. Effective Aug 18, 1977

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 2008-14-07](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 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
- [AD 81-18-04 R2](https://openairdocs.org/ad/81-18-04-R2) (historical): Engine Oil Pump Driven Impeller and Shaft · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 376 more. Effective Jun 7, 1982

## Information bulletins (advisory) (7)

- [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019
- [SAIB NE-08-32R1](https://openairdocs.org/saib/NE-08-32R1): Propeller Governor  Idler Gear Shaft Set Screw. Issued May 13, 2016
- [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014
- [SAIB NE-13-06](https://openairdocs.org/saib/NE-13-06): Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320, 360, and 540 Series Engines. Issued Nov 21, 2012
- [SAIB NE-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)

- [N323AK](https://openairdocs.org/aircraft/N323AK): [Adk Global LLC](https://openairdocs.org/faa-owner/ADK%20GLOBAL%20LLC), [Hollywood, FL](https://openairdocs.org/faa-place/FL/Hollywood), built 1979, S/N 6007027961218, Expired dealer, pending cancellation
- [N343MT](https://openairdocs.org/aircraft/N343MT): [Demon Diversified LLC](https://openairdocs.org/faa-owner/DEMON%20DIVERSIFIED%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2013, S/N 3343
- [N4LN](https://openairdocs.org/aircraft/N4LN): [Tec Aviation LLC](https://openairdocs.org/faa-owner/TEC%20AVIATION%20LLC), [Euclid, OH](https://openairdocs.org/faa-place/OH/Euclid), built 1978, S/N 60-0511-165
- [N513AR](https://openairdocs.org/aircraft/N513AR): [Live More LLC](https://openairdocs.org/faa-owner/LIVE%20MORE%20LLC), [Crowley, TX](https://openairdocs.org/faa-place/TX/Crowley), built 1979, S/N 60-0708-7961220
- [N51GR](https://openairdocs.org/aircraft/N51GR): [Mckinnon Kerwin A](https://openairdocs.org/faa-owner/MCKINNON%20KERWIN%20A), [Orlando, FL](https://openairdocs.org/faa-place/FL/Orlando), built 1978, S/N 6005637961183
- [N543JG](https://openairdocs.org/aircraft/N543JG): [Wessel Marvin E Jr](https://openairdocs.org/faa-owner/WESSEL%20MARVIN%20E%20JR), [Chandler, AZ](https://openairdocs.org/faa-place/AZ/Chandler), built 2011, S/N 3057
- [N817AR](https://openairdocs.org/aircraft/N817AR): [Live More LLC](https://openairdocs.org/faa-owner/LIVE%20MORE%20LLC), [Crowley, TX](https://openairdocs.org/faa-place/TX/Crowley), built 1981, S/N 60-0894-8161253
- [N81AK](https://openairdocs.org/aircraft/N81AK): [Adk Global LLC](https://openairdocs.org/faa-owner/ADK%20GLOBAL%20LLC), [Hollywood, FL](https://openairdocs.org/faa-place/FL/Hollywood), built 1981, S/N 6008638161246, Expired dealer, pending cancellation
- [N83SL](https://openairdocs.org/aircraft/N83SL): [Houston, TX](https://openairdocs.org/faa-place/TX/Houston), built 1978, S/N 6005707961186, Registration pending
- [N953LW](https://openairdocs.org/aircraft/N953LW): [Watson Frank D](https://openairdocs.org/faa-owner/WATSON%20FRANK%20D), [Canton, PA](https://openairdocs.org/faa-place/PA/Canton), built 1980, S/N 6007648061231

## NTSB investigations

None matched to aircraft with this engine model.

## FAA accident and incident reports

None matched to aircraft with this engine model.

## Service difficulty reports (64, newest 50)

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

- [SDR CA150323006](https://openairdocs.org/sdr/CA150323006), Mar 23, 2015: SUPPORT BRACKET. BROKEN. (CAN) EXHAUST STACK SUPPORT BRACKET FOUND BROKEN ON RT SIDE ENGINE.
- [SDR CA130823011](https://openairdocs.org/sdr/CA130823011), Aug 22, 2013: ALTERNATOR. MALFUNCTIONED. (CAN) PILOT EXPERIENCED TOTAL ELECTRICAL FAILURE. MAINTENANCE FOUND RT ALTERNATOR FEED CURCUIT BREAKER POPPED & LT ALTERNATOR OUTPUT VERY LOW. BATTERIES FOUND T
- [SDR CA101027006](https://openairdocs.org/sdr/CA101027006), Oct 25, 2010: ENGINE. FOD. (CAN) ALUMINUM PLUG LEFT IN BYPASS OIL PORT AFTER INITIAL START/RUN BY OVERHAUL SHOP.
- [SDR CA100618002](https://openairdocs.org/sdr/CA100618002), Jun 17, 2010: PUMP. MALFUNCTIONED. NR2 BOOST PUMP POPPING CIRCUIT BREAKER.
- [SDR CA100608008](https://openairdocs.org/sdr/CA100608008), Jun 1, 2010: CONTROL CABLE. OBSTRUCTED. WHEN ELEVATOR CONTROL PULLED ALL THE WAY BACK THE AILERONS WERE LOCKED UP. HOSE CLAMP WAS HOLDING STRUCTURE CLOSER TO CONTROL COLUMN SHAFT. WHEN CONTROL COLUMN 
- [SDR CA090901009](https://openairdocs.org/sdr/CA090901009), Aug 27, 2009: SEAT BACK. BROKEN. PILOT FOUND SEAT BACK BROKEN AFTER ADJUSTING POSITION BEFORE ENTERING ACFT. MX FOUND SEAT BACK FRAME ATTACHEMENT HORN BROKEN AT PIVOT POINT HOLE.
- [SDR CA090826011](https://openairdocs.org/sdr/CA090826011), Aug 24, 2009: SERVO. STICKING. THROTTLE PLATE STUCK ON ENG RUN UP RPM WOULD NOT GO BELOW 2000 RPM. WHEN SERVO INJECTOR WAS REMOVED FROM ENG, THROTTLE PLATE WAS MOVING FREELY AGAIN. THROTTLE S
- [SDR CA090724003](https://openairdocs.org/sdr/CA090724003), Jul 20, 2009: DIODE. FAILED. (CAN) WHEN GEAR WAS SELECTED DOWN, GEAR DOWN AND LOCKED LIGHT DID NOT ILLUMINATE. WHEN GEAR WAS THEN SELECTED UP, THE SAFETY SOLENOID DID NOT DISENGAGE AND SO H
- [SDR CA070706005](https://openairdocs.org/sdr/CA070706005), Jul 3, 2007: SHEAR PIN. SHEARED. (CAN) AFTER TAKEOFF THE PILOT SELECTED GEAR UP, THE GEAR UP LIGHT FAILED TO ILLUMINATE. THE LANDING GEAR WAS EXTENDED AND THE AIRCRAFT LANDED AT AIRPORT. UPON I
- [SDR CA060419002](https://openairdocs.org/sdr/CA060419002), Apr 17, 2006: SPAR. CRACKED. CRACK WAS NOTICED DURING AN ANNUAL INSPECTION WITH THE AID OF FLASHLIGHT AND MIRROR. THE DEFECT AREA IS JUST AFT OF THE NR 2 ENGINE FIREWALL THROUGH AN INSPECTI
- [SDR CA050225006](https://openairdocs.org/sdr/CA050225006), Feb 24, 2005: DOUBLER. CRACKED. (CAN) WHILE ACCOMPLISHING AD 80-19-14 STABILIZER FITTING INSPECTION, 2 CRACKS WERE NOTICED ON THE BOTTOM RIB P/N 220000-033 OF THE VERTICAL FIN. CRACKS ARE LOCA
- [SDR CA050225007](https://openairdocs.org/sdr/CA050225007), Feb 24, 2005: RIB. CRACKED. (CAN) VERTICAL RIB WAS REMOVED FOR RIB REPLACEMENT. ONCE FIN WAS REMOVED, FORWARD RIB WAS FOUND TO HAVE 2 CRACKS IN THE REAR 90 DEGREE BEND. CRACKS ORIGINATE FR
- [SDR TZR2005F00000](https://openairdocs.org/sdr/TZR2005F00000), Jan 4, 2005: TRUNNION. CRACKED. LT MLG, TRUNION CRACKED AT TOP WHERE TUBE GOES INTO MOUNTING BOSS. (SW05200506154) (K)
- [SDR CA031106003](https://openairdocs.org/sdr/CA031106003), Oct 15, 2003: ATTACH FITTING. CRACKED. (CAN) DURING ANNUAL ISPECTION OF WING TO FUSELAGE ATTACH FITTINGS IAW MFG SB 600-136, THE LT AFT FITTING WAS FOUND TO BE CRACKED. ALL OTHER AIRCRAFT IN THE FLEE
- [SDR AUS20030656](https://openairdocs.org/sdr/AUS20030656), Jun 17, 2003: PROPELLER. FAULTY. (AUS) PROPELLER REMOVED DUE TO OIL LEAK. DISASSEMBLY AND INVESTIGATION FOUND THE FOLLOWING DEFECTS; INCORRECT LOCKING OF BALANCE WEIGHT SCREWS. SCREWS WERE LOCK
- [SDR AUS20030587](https://openairdocs.org/sdr/AUS20030587), May 23, 2003: BEARING. FAILED. (AUS) RT MAIN WHEEL INBOARD BEARING ASSEMBLY FAILED.
- [SDR AUS20021251](https://openairdocs.org/sdr/AUS20021251), Oct 18, 2002: FITTING. CRACKED. (AUS) RH HORIZONTAL STABILISER FORWARD ATTACHMENT FITTING CRACKED.
- [SDR CA011108007](https://openairdocs.org/sdr/CA011108007), Oct 29, 2001: CONTROL CABLE. SEPARATED. (CAN) DURING ANNUAL INSPECTION THE ENGINES WERE BEING REMOVED FOR REPLACEMENT. DURING INSPECTION OF THE ENGINE CONTROLS, BOTH THE LT MIXTURE CONTROL CABLE P/N 6
- [SDR AUS20010508](https://openairdocs.org/sdr/AUS20010508), May 17, 2001: BEARING. BROKEN. (AUS) LH MAIN LANDING GEAR ACTUATOR RODEND BEARING FRACTURED.
- [SDR BSY2001F00021](https://openairdocs.org/sdr/BSY2001F00021), Feb 7, 2001: DOOR. MALFUNCTIONED. (BWI)(MIR) AFTER TAKE OFF HAD NO GEAR UP LIGHT, RETURNED TO BWI, FOUND NOSE GEAR DOORS HOLDING GEAR FROM GOING ALL THE WAY UP IN WHEEL WELL. REPAIRED DOORS. OPS
- [SDR 20010122CW009](https://openairdocs.org/sdr/20010122CW009), Dec 8, 2000: HOSE. BROKEN. MIR BDL AIRCRAFT FLYING FROM BOS TO TEB, LOST ALL HYDRAULIC FLUID, DIVERTED TO MAINTENANCE BASE AT BDL. FOUND HYDRAULIC HOSE BROKEN LT GEAR DOOR ACTIVATOR.
- [SDR 20010420CW010](https://openairdocs.org/sdr/20010420CW010), Sep 26, 2000: RETAINER. LOOSE. DEFECT OCCURED UNDER NORMAL CIRCUSTANCE ON A FRESH FACTORY OVERHAUL. NR 4 CYL INTAKE ROCKER RETAINER, BONDED TO VALVE COVER, CAME LOOSE ALLOWING ROCKER PIN TO S
- [SDR 20001030SH011](https://openairdocs.org/sdr/20001030SH011), Sep 14, 2000: CYLINDER. DAMAGED. SWP - AIRCRAFT EN ROUTE DIVERTED TO STEWART, NY BECAUSE OF ROUGH RT ENGINE. MAINTENANCE FOUND ROCKER COVER PLATE OFF, ROCKER PIN BACKED OUT, AND PUSH ROD BENT. 
- [SDR AU000680](https://openairdocs.org/sdr/AU000680), Sep 1, 2000: BRACE. CRACKED. (AUS) LEFT MAIN LANDING GEAR LOWER SIDE BRACE CRACKED. FOUND DURING INSPECTION IAW TSA-SB600-134A. (X)
- [SDR AU000952](https://openairdocs.org/sdr/AU000952), Aug 1, 2000: COLLAR. WRONG PART. (AUS) NOSE LANDING GEAR STEERING COLLAR FAILED AT ACTUATOR ATTACHMENT POINT. CONNECTING BOLT WAS INCORRECT PART. BOLT SHEARED. UNAPPROVED PART. (X)
- [SDR CA000809006](https://openairdocs.org/sdr/CA000809006), Jul 24, 2000: TRANSCEIVER. FAILED. (CAN) DURING FIRE FIGHTING OPERATIONS THE NUMBER 2 POSITION VHF TRANSCEIVER HAD FAILED. THE PILOT SMELLED SMOKE IN THE COCKPIT AND TURNED OFF THE RADIO. THE AIR
- [SDR CA000731015](https://openairdocs.org/sdr/CA000731015), Jul 17, 2000: FITTING. CRACKED. (CAN) AN A INSPECTION WAS BEING ACCOMPLISHED ON THE AIRCRAFT. DURING THIS INSPECTION, A CRACK WAS FOUND ON THE AFT VERTICAL STABILIZER ATTACH FITTING. THE CRACK
- [SDR 20000530SH007](https://openairdocs.org/sdr/20000530SH007), Apr 26, 2000: CONNECTING ROD. FAILED. BDL - RT ENGINE ROUGH, THEN PILOT SHUT ENGINE DOWN. FOUND NR 5 CYLINDER CONNECTING ROD FAILED. CAUSE UNKNOWN AT THIS TIME. REMOVED AND REPLACED ENGINE ASSY. (X)
- [SDR AU000343](https://openairdocs.org/sdr/AU000343), Apr 7, 2000: FUEL TANK. LEAKING. (AUS) FUEL TANKS LEAKING. FOUND FOLLOWING COMPLIANCE WITH AD/GEN/81 .LEAKS WERE NOT PRESENT PRIOR TO INTRODUCTION OF WATER OR IPA.
- [SDR CA000327008](https://openairdocs.org/sdr/CA000327008), Mar 10, 2000: DRAIN LINE. CHAFED. (CAN) BROKEN BAFFLE CAUSED WEAR IN CYLINDER OIL DRAIN.
- [SDR CA000209015](https://openairdocs.org/sdr/CA000209015), Jan 31, 2000: STRINGER. LOOSE. (CAN) SHEARED RIVET FOUND IN STRINGER ASSY. CAUSING FALSE GEAR INDICATION DUE TO FLEXING IN STRINGER. WHEN IN CONTACT WITH DOWNLOCK MICROSWITCH.
- [SDR 2000ZZZX576](https://openairdocs.org/sdr/2000ZZZX576), Jan 7, 2000: CYLINDER. SEPARATED. BGM - RIGHT ENGINE, NR 2 CYLINDER, SEPARATED. SUBMITTER STATED CAUSE UNKNOWN AT THIS TIME. WILL REMOVE AND REPLACE ENGINE, FLUSH PROPELLER, AND PROPELLER GOVERN
- [SDR 2000ZZZX381](https://openairdocs.org/sdr/2000ZZZX381), Dec 12, 1999: CYLINDER. DAMAGED. ALB - LEFT ENGINE OIL PRESSURE, DROPPED TO REDLINE IN CRUISE AND OIL TEMP WENT TO REDLINE. REMOVED AND REPLACED NR 2 CYLINDER ASSY FOR BLOW-BYE AND LOW COMPRESS
- [SDR AU990692](https://openairdocs.org/sdr/AU990692), Jul 13, 1999: FITTING. CRACKED. (AUS) MAIN LANDING GEAR ATTACHMENT FITTINGS P/N 200017-1 AND P/N O200018-1 CRACKED THROUGH WEB SECTION.
- [SDR 99ZZZX3072](https://openairdocs.org/sdr/99ZZZX3072), Jul 1, 1999: FUEL SERVO. MALFUNCTIONED. BOL - RT ENGINE SWAGING ON TAKEOFF. RETURNED TO BOL. REMOVED AND REPAIRED FUEL SERVO. OPS CHECKS GOOD.
- [SDR CA990318002](https://openairdocs.org/sdr/CA990318002), Mar 3, 1999: FITTING. CRACKED. (CAN) CRACK FOUND IN BOTH THE RIGHT HAND WING LOWER FRONT SPAR AND LOWER REAR SPAR WING TO FUSELAGE FITTING. CRACKS CAN BE SEEN FROM MAIN WHEELWELL. COMPANY PLA
- [SDR CA990224003](https://openairdocs.org/sdr/CA990224003), Feb 15, 1999: TUBE. CORRODED. (CAN) FUEL TRANSFER TUBE IN RIGHT HAND WING WHERE FUEL STRAINER ATTACHES FOUND TO HAVE DEEP CORROSION PITTING INSIDE TUBE. OPERATOR WILL DO FLEET CAMPAIGN.
- [SDR 99ZZZX511](https://openairdocs.org/sdr/99ZZZX511), Jan 12, 1999: ENGINE. FAILED. LEFT ENGINE SHUT DOWN IN-FLIGHT. ICE FOUND IN INDUCTION AIR FILTER, ALTERNATE AIR, AND FUEL SERVO. INSPECTION OF RIGHT ENGINE FOUND SAME CONDITION. AIRCRAFT OPE
- [SDR CA981230003](https://openairdocs.org/sdr/CA981230003), Nov 5, 1998: FASTENER. FAILED. (CAN) ONE FASTENER IN THE FORWARD MAIN SPAR CAP UPPER SKIN FITTING WAS FOUND SHEARED. INITIAL ALERT WAS A PROTRUDING FASTENER. IT HAD FAILED APPROXIMATELY .3750
- [SDR CA981006002](https://openairdocs.org/sdr/CA981006002), Sep 25, 1998: ROD. FAILED. (CAN) DURING CRUISE, THE PILOT NOTED THE NR 1 ENGINE WAS RUNNING ROUGH. THE ENGINE WAS SHUT DOWN AND THE AIRCRAFT RETURNED TO BASE. POST-FLIGHT INSPECTION REVEA
- [SDR 98ZZZX3126](https://openairdocs.org/sdr/98ZZZX3126), Aug 14, 1998: CONTROL CABLE. MALFUNCTIONED. PILOT REPORTED NO RESPONSE FROM RT THROTTLE CONTROL. SUSPECT RT THROTTLE CABLE. CAUSE NOT YET KNOWN.
- [SDR AU980384](https://openairdocs.org/sdr/AU980384), Apr 4, 1998: SHAFT. CRACKED. (AUS) NOSE LANDING GEAR PIVOT SHAFT CRACKED. PART TC: 5,760.
- [SDR CA980416001](https://openairdocs.org/sdr/CA980416001), Apr 3, 1998: BELLCRANK. BROKEN. (CAN) DURING TEST FLIGHT WHEN THE LANDING GEAR WAS BEING CYCLED, NOTED THE RT MLG WAS NOT FULLY RETRACTED. A/C RETURNED TO BLOCKS. RT MLG DOOR BELLCRANK WAS BRO
- [SDR AU980361](https://openairdocs.org/sdr/AU980361), Apr 2, 1998: CAM. INCORRECT FIT. (AUS) NOSE WHEEL CENTERING CAM INCORRECTLY INSTALLED PREVENTING CORRECT RETRACTION OF NOSE LANDING GEAR. PERSONNEL/MAINTENANCE ERROR.
- [SDR CA980317054](https://openairdocs.org/sdr/CA980317054), Mar 9, 1998: BOLT. SHEARED. (CAN) THE PORT MAIN SPAR TO FUSELAGE FITTING ONE OF THE INBOARD JO-BOLTS FOUND SHEARED. FASTENER FOUND PROTRUDING APPROX .010 INCH.FASTENER SHEARED 3/8 INCH BEL
- [SDR CA980303001](https://openairdocs.org/sdr/CA980303001), Feb 24, 1998: FITTING. SHEARED. (CAN) STBD MAIN SPAR-TO-FUSE FITTING 2 MOST INNER JO-BOLTS FASTENERS SHEARED 5/16INCH BELOW HEAD. REPLACED.
- [SDR CA971015056](https://openairdocs.org/sdr/CA971015056), Sep 25, 1997: CRANKCASE. CRACKED. (CAN) DURING NIGHT FLIGHT THE PILOT OBSERVED AN INCREASE IN E.G.T. ON THE NR1 ENGINE, SPARKS WERE SEEN COMING INTERMITTENTLY FROM THE EXHAUST. AIRCRAFT RETURNED
- [SDR 97ZZZX3073](https://openairdocs.org/sdr/97ZZZX3073), Jun 18, 1997: MOUNT. CHAFED THROUGH. LOWER MOTOR MOUNT 'V' AT MIDDLE ATTACH FITTING WAS FOUND CHAFED COMPLETELY THROUGH THE WALL OF TUBING (APPROXIMATELY 20 PERCENT OF DIAMETER OF TUBE) BY P/N 9200
- [SDR CA970709004](https://openairdocs.org/sdr/CA970709004), Jun 13, 1997: CABLE. BROKEN. (CAN) DURING INSPECTION, THE RIGHT HAND MIXTURE CONTROL CABLE WAS FOUND TO HAVE A BROKEN GUIDE TUBE JUST BEFORE THE ROD END AT THE FUEL INJECTOR. THE SWIVEL CRI
- [SDR AU971120](https://openairdocs.org/sdr/AU971120), Jun 10, 1997: DOOR. SEPARATED. (AUS) ENGINE ALTERNATE AIR DOOR SEPARATED FROM INDUCTION AIR BOX ASSEMBLY AND JAMMED THE THROTTLE BUTTERFLY

All 64: https://openairdocs.org/engine/lycoming-io-540-k1j5/reports.md

## STCs that may be installed (OpenAirDocs) (41)

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 SE2387CE](https://openairdocs.org/stc/SE2387CE): Installation of B & C Speciality Products lightweight (10.2 pounds) engine starter P/N BC 315-100-1(12 volt) or P/N BC 315-100-3(24 volt). B & C Specialty Products Inc. Lists IO-540 Series
- [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc
- [STC SE01436LA](https://openairdocs.org/stc/SE01436LA): Installation of Firewall Forward Technologies LLC modified camshaft. Centri-lube Technologies LLC
- [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp
- [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc
- [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp
- [STC SE09445SC](https://openairdocs.org/stc/SE09445SC): Installation of fuel injector nozzles. General Aviation Modifications Inc. Lists IO-540 Series
- [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc. Lists IO-540 Series
- [STC SE7509SW](https://openairdocs.org/stc/SE7509SW): 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 IO-540 Series
- [STC SE7667SW](https://openairdocs.org/stc/SE7667SW): Installation of parts listed on Drawing List No. 8810-3, Rev 6. Continental Motors, Inc. Lists IO-540 Series
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists IO-540 Series
- [STC SE00218NY](https://openairdocs.org/stc/SE00218NY): Replacement of Lycoming starter with SKY-TEC 12 volt starter installed. Hartzell Engine Technologies, LLC. Lists IO-540 Series
- [STC SE00226NY](https://openairdocs.org/stc/SE00226NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter Models 149-24HT and 122-24HT. Approval limited to 24-volt DC source available to the starter. Hartzell Engine Technologies, LLC
- [STC SE00357NY](https://openairdocs.org/stc/SE00357NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter installed. Hartzell Engine Technologies, LLC. Lists IO-540 Series
- [STC SE2901NM](https://openairdocs.org/stc/SE2901NM): Lycoming valve cover gasket. Real Gaskets Tennessee
- [STC SE2902NM](https://openairdocs.org/stc/SE2902NM): Lycoming valve cover gasket. Real Gaskets Tennessee
- [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
- [STC SE00768CH](https://openairdocs.org/stc/SE00768CH): Replace Slick 6000, 6100, 6200 and 6300 series magnetos and TCM/Bendix S6-20, S6-200 and S6-1200 series magnetos with the Champion Limited Authority Spark Advance Regulator (LASARTM) ignition system. Champion Aerospace LLC. Lists IO-540 Series
- [STC SE01524CH](https://openairdocs.org/stc/SE01524CH): Replace Slick 6000, 6100, 6200, 6300, 4000, 4100, 4200, and 4300 series magnetos and TCM/Bendix S6-20, S6-200, S6-1200, S-20, S-200, and S-1200 series magnetos with Champion Limited Authority Spark Advance Regulator (LASAR ) Model 4755 and 6755 bush kit ignition systems. Champion Aerospace LLC
- [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 SE22WE](https://openairdocs.org/stc/SE22WE): Installation of AiResearch Turbosupercharger 406610-3. Approved for IO-540-J4A5 model. GE Engine Services-Corporate Aviation Inc. DBA Garrett Aviation Services. Lists IO-540 Series
- [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter. Aviation Development Corporation
- [STC SE00890LA](https://openairdocs.org/stc/SE00890LA): Installation of Nickson's cylinder barrels on Lycoming reciprocating engine models. Nickson's Machine Shop Inc. Lists IO-540 Series
- [STC SE09492SC](https://openairdocs.org/stc/SE09492SC): Installation and usage of Exxon 20W50 multigrade aircraft engine oil conforming to Exxon Oil formulation WS-3013. Exxon Company USA. Lists IO-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 IO-540 Series
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists IO-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 IO-540 Series
- [STC SE5924SW](https://openairdocs.org/stc/SE5924SW): Installation of stainless steel replacement exhaust studs on AVCO engines. Perrigo & Steele Aircraft Engr Company. Lists IO-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 IO-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 IO-540 Series
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists IO-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 IO-540 Series
- [STC SE44WE](https://openairdocs.org/stc/SE44WE): Use of Kling Aviation Oil, Specifications KL-100, KL-200 and KL-300 in Continental and Lycoming engines. Kling Oil Company. Lists IO-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
- [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
- [AE944](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157009852420250908153027.0001): Rotor Shaft. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALE-273 · Aug 27, 2025
- [AE45BS-E](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID143460060920250908153031.0001): Brush Rack Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALE-1045BS · Aug 27, 2025
- [AE2241](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID127316494620250908153022.0001): Fan Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number 90-2241 · Aug 27, 2025
- [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
- [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
- [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
- [201F-5003](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182515755020240701174400.0001): Fuel Pump. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Lear RomecRG17980D/MLycoming… · Jun 20, 2024
- [ES3018](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194884707820251216184204.0001): Clamp, Bearing Cap. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3018 · May 20, 2024
- [AM-3021](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194256093820251216184144.0001): Screw Distributor Block. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3021 · May 20, 2024
- [ES5617](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID190223284620251216184226.0001): Machining, Rotating Magnet. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M5617 · May 20, 2024
- [ES3221](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189601053820251216184228.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3221 · May 20, 2024
- [AK-3975](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181109606820251216184201.0001): Coil, Ignition. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3009, M3114, M3525, K3975, K3975 · May 20, 2024
- [AM-3015](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180990573320251216184149.0001): Screw, Housing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3015 · May 20, 2024
- [AM-3006](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178460806720251216184151.0001): Bearing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3006 · May 20, 2024
- [AM2536](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175576430320251216184152.0001): Woodruff Key. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M2536 · May 20, 2024
- [ES3040](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175045989620251216184205.0001): Coil Wedge. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3040 · May 20, 2024
- [AK-3984](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168254730520251216184200.0001): Capacitor. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3183, K3984 · May 20, 2024
- [AM-2556](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164604517920251216184155.0001): Cotter Pin. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M2556 · May 20, 2024
- [ES3637K](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163564757720251216184213.0001): Contact Point Secondary. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3637 · May 20, 2024
- [ES3084](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152458666320251216184211.0001): Air Vent With Hood. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3084 · May 20, 2024
- [AM-3217](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152412216720251216184157.0001): Wave Spring Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M-3217 · May 20, 2024
- [AM-3485](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151878274520251216184156.0001): Bearing Cap, Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3485 · May 20, 2024

All of them: https://openairdocs.org/engine/lycoming-io-540-k1j5/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.