# Lycoming IO-540-E1A5

- Type: Engine model (FAA registry)
- Registry code: 41638
- Manufacturer (registry): LYCOMING
- Model: IO-540-E1A5
- Engine type: Reciprocating
- Power: 290 hp
- Data sheet: [TCDS 1E4](https://openairdocs.org/tcds/1E4) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 4 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-io-540-e1a5

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 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 2009-02-03](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 2006-10-21](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 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 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 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
- [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 66-06-03](https://openairdocs.org/ad/66-06-03): Connecting Rod Assemblies · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 317 more. Effective Jan 16, 1969
- [AD 66-20-04](https://openairdocs.org/ad/66-20-04): Oil Filter Adapter Gasket · Lycoming Engines IO-320-A1A, IO-320-A2A, IO-320-B1A and 121 more. Effective Aug 27, 1966
- [AD 63-14-03](https://openairdocs.org/ad/63-14-03): Oil Pump Drive Shaft · Lycoming Engines IO-540-A1A5, IO-540-B1A5, IO-540-B1B5 and 21 more. Effective Jul 6, 1963

Historical (superseded or no longer in force):

- [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 548 more. Effective Dec 5, 2024
- [AD 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 (4)

- [N151AJ](https://openairdocs.org/aircraft/N151AJ): [Ellzey Andrew J](https://openairdocs.org/faa-owner/ELLZEY%20ANDREW%20J), [Rogers, AR](https://openairdocs.org/faa-place/AR/Rogers), built 2013, S/N 3RX-151
- [N346UD](https://openairdocs.org/aircraft/N346UD): [Jack W Berry And Associates Inc](https://openairdocs.org/faa-owner/JACK%20W%20BERRY%20AND%20ASSOCIATES%20INC), [Peachtree City, GA](https://openairdocs.org/faa-place/GA/Peachtree%20City), built 1965, S/N 1539-193
- [N520DR](https://openairdocs.org/aircraft/N520DR): [Dmgf LLC](https://openairdocs.org/faa-owner/DMGF%20LLC), [Bertram, TX](https://openairdocs.org/faa-place/TX/Bertram), built 1961, S/N 1116-66
- [N713SP](https://openairdocs.org/aircraft/N713SP): [Central Airlines Inc](https://openairdocs.org/faa-owner/CENTRAL%20AIRLINES%20INC), [Leawood, KS](https://openairdocs.org/faa-place/KS/Leawood), built 1964, S/N 500B-1480-172

## NTSB investigations

None matched to aircraft with this engine model.

## FAA accident and incident reports (2)

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 19950121002029I](https://openairdocs.org/incident/19950121002029I), Jan 21, 1995: Gulstm 500B (N346UD), Peachtree City, GA, Minor damage. Narrative: last annual 10-19-94. Mr. William r. ellison pilot cert#1805828 approached runway 31 at Falcon field, Peachtree City, GA. Normal approach made VFR,…
- [Accident 19750703033089A](https://openairdocs.org/incident/19750703033089A), Jul 3, 1975: Rkwell 500A (N6252X), Substantial damage

## Service difficulty reports (38)

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

- [SDR EY2R201507090001](https://openairdocs.org/sdr/EY2R201507090001), Jul 6, 2015: RETAINER. CRACKED. FLYWEIGHT RETAINING DISC FOUND CRACKED DURING MPI. CRACK INDICATION WAS FOUND WHILE PROPELLER GOVERNOR WAS SENT IN FOR OVERHAUL.
- [SDR CA150417005](https://openairdocs.org/sdr/CA150417005), Apr 15, 2015: PRESSURE SWITCH. FAILED. (CAN) HYDRAULIC SYS PRESS SWITCH INTERNAL FAILURE CAUSED ALL HYD SYSTEM FLUID TO ESCAPE OUT PRESS SWITCH DRAINING ALL FLUID. LANDING GEAR WAS SELECTED DOWN USIN
- [SDR 2012FA0000788](https://openairdocs.org/sdr/2012FA0000788), Nov 15, 2012: WIRE. DAMAGED. AFTER FINDING A BROKEN WIRE ON THE FUEL LEVEL TRANSMITTER OF ANOTHER ACFT OF THE SAME MAKE AND MODEL, MECHANIC INSPECTED AND FOUND FUEL LEVEL TRANSMITTER WITH B
- [SDR 2012FA0000753](https://openairdocs.org/sdr/2012FA0000753), Oct 25, 2012: WIRE. BROKEN. AFTER AN OCCURANCE OF AN OFF AIRPORT LANDING, DUE TO FUEL STARVATION, ON OCT 10,2012, WITH FUEL GUAGE SHOWING 60 GALLONS ON BOARD. THE MECHANIC FOUND A BROKEN W
- [SDR 2009FA0000951](https://openairdocs.org/sdr/2009FA0000951), Oct 16, 2009: PLUG. DAMAGED. LT ENG STARTED LOSING RPM. PILOT REPORTED FUEL PRESSURE DROPPED BELOW NORMAL RANGE BUT HAVE TO BELIEVE IT WAS OIL PRESSURE. ENG WAS CAGED AND LANDED SAFELY. THE
- [SDR 813200701](https://openairdocs.org/sdr/813200701), Aug 14, 2007: ROCKER SHAFT. BROKEN. LEFT ENGINE PILOT NOTICED PARTIAL POWER LOSS. AFTER LANDING THERE WAS A LARGE OIL LEAK FROM THE NR 6 EXHAUST PUSHROD TUBE WHICH HAD BEEN JARRED LOOSE AND UNCLIP
- [SDR 5072007](https://openairdocs.org/sdr/5072007), May 1, 2007: CYLINDER. BROKEN. THE HOLD DOWN STUDS ON NR 2 CYLINDER BROKE CAUSING ON OIL LEAK TO LOSS OIL PRESSURE.
- [SDR 040607](https://openairdocs.org/sdr/040607), Apr 6, 2007: FLOW DIVIDER. LEAKING. THE RT ENGINE EXPERIENCED A LOSS OF POWER AND INDICATED A SIGNIFICANT INCREASE IN FUEL FLOW. THE ENGINE WAS SHUTDOWN AND A THE AIRCRAFT LANDED AT THE NEXT AVAIL
- [SDR 01302007](https://openairdocs.org/sdr/01302007), Jan 30, 2007: PUMP. DAMAGED. LEFT VACUUM PUMP LOOSENED FROM ENGINE AND CAUSED A LOOSE OF OIL PRESSURE. THE VACUUM PUMP DRIVE WAS DAMAGED IN THAT THE GEAR WAS ROUNDED OFF. IT WAS HARD TO DET
- [SDR ZJWA102306001](https://openairdocs.org/sdr/ZJWA102306001), Sep 15, 2006: EXHAUST VALVE. LOOSE. LEFT ENGINE WAS LOSING RPM. WHEN RPM GOT BELOW 2000 THE PILOT FEATHERED THE ENGINE AND LANDED SAFELY. AT ENGINE TEAR DOWN THE NR 5 CYLINDER EXHAUST SEAT HAD COM
- [SDR ZJWA462006](https://openairdocs.org/sdr/ZJWA462006), Apr 6, 2006: ROD BEARING. DELAMINATED. METAL CONTAMINATION IN OIL SCREEN DURING INSPECTION. REMOVED ALL CYLINDERS AND RODS AND FOUND 2 ROD BEARINGS FLAKING METAL OFF. THESE 2 BEARINGS AND ONE OTHER W
- [SDR CA050824019](https://openairdocs.org/sdr/CA050824019), Aug 7, 2005: MAGNETO. FAILED. (CAN) DURING A ROUTINE COMPANY FLIGHT, THE NR 1 ENGINE STARTED RUNNING ROUGH. THE AIRCRAFT LANDED AND CALLED MAINTENANCE. UPON INSPECTION THE LT MAG WAS FOUND S
- [SDR H3AA1](https://openairdocs.org/sdr/H3AA1), Nov 30, 2004: BRACKET. CRACKED. A CRACK APPROXIMATELY 2.5 INCHES LONG WAS NOTICED IN THE UPPER PORTION OF THE TURBO CHARGER ATTACH BRACKET. UPON REMOVAL OF FROM THE ENGINE MOUNT NUMEROUS CRACK
- [SDR 24KM1](https://openairdocs.org/sdr/24KM1), Nov 30, 2004: BRACKET. CRACKED. A CRACK APPROXIMATELY 2.5 INCHES LONG WAS NOTICED IN THE UPPER PORTION OF THE TURBO CHARGER ATTACH BRACKET. UPON REMOVAL OF FROM THE ENGINE MOUNT NUMEROUS CRACK
- [SDR ZJW2004F00001](https://openairdocs.org/sdr/ZJW2004F00001), Sep 14, 2004: CAP. OUT OF POSITION. NR 5 CYLINDER WRIST PIN CAP ROLLED UP IN PISTON. CAUSE METAL FRAGMENTS IN OIL SCREEN. RESTRICTED OIL FLOW TO GOVERNOR. CAUSED DROP IN RPM. ENGINE WAS FEATHERED 
- [SDR ZJW2004F00002](https://openairdocs.org/sdr/ZJW2004F00002), Sep 13, 2004: CYLINDER. BROKEN. NR 1 CYLINDER BARREL BROKE CAUSING PISTON TO BE CAUGHT ON THE DOWN STROKE. THEN ROD BOLTS BROKE AND ROD CAP CAME OFF. ENGINE LOST MUCH OF OIL AND WAS FEATHERED 
- [SDR AUS20020745](https://openairdocs.org/sdr/AUS20020745), Jul 25, 2002: MUFFLER. CRACKED. (AUS) LH MUFFLER OUTLET PIPE CRACKED AT REAR SUPPORT CLAMP.
- [SDR CA020507021](https://openairdocs.org/sdr/CA020507021), Apr 26, 2002: STUD. SHEARED. (CAN) WHEN THE PILOT SELECTED GEAR DOWN, DID NOT RECEIVE A GREEN NOSE GEAR LIGHT. PILOT DID FLY BYS AND IT WAS NOTED NOSE GEAR WAS NOT IN LOCKED POSITION. PILOT
- [SDR 2001FA0000497](https://openairdocs.org/sdr/2001FA0000497), Oct 22, 2001: CRANKCASE. CRACKED. CRANKCASE WAS CRACKED AT NR 2 UPPER CYLINDER STUD AND LEAD INTO OIL PRESSURE GALLEY. ENGINE LOST OIL PRESSURE AND WAS FEATHERED.
- [SDR AUS20011017](https://openairdocs.org/sdr/AUS20011017), Sep 21, 2001: PLATE. CORRODED. (AUS) EXTERNAL SPAR CAP SUPPORT PLATE RH SIDE CORRODED IN AREA OF JOINT BETWEEN TWO PLATES. EVIDENCE OF CORROSION IN SIMILAR AREA ON LH SIDE.
- [SDR 20001227SH011](https://openairdocs.org/sdr/20001227SH011), Dec 5, 2000: CAPACITOR. INOPERATIVE. PRE-FLIGHT RUN UP REVEALED EXCESS RPM DROP ON MAG CHECK. POST-REPLACEMENT INSPECTION REVEALED POINTS BURNED AND CAPACITOR WIRE BROKEN AT CONNECTOR END. (X)
- [SDR 20010413CW014](https://openairdocs.org/sdr/20010413CW014), Nov 8, 2000: WIRE. INOPERATIVE. PILOT REPORTED MAGNETO INOPERATIVE. POST INSPECTION REVEALED CAPACITOR WIRE BROKEN AT CONNECTOR END AND COIL WIRE BROKEN AT CONNECTOR END.
- [SDR 20001129SH024](https://openairdocs.org/sdr/20001129SH024), Oct 31, 2000: WIRE. BROKEN. PRE-FLIGHT RUNUP SHOWED SEVERE MAGNETO DROP. POST-REPLACEMENT INSPECTION SHOWED BURNED CONTACTS AND CAPACITOR WIRE BROKEN. (X)
- [SDR 20001031SH005](https://openairdocs.org/sdr/20001031SH005), Oct 10, 2000: CYLINDER. DISLODGED. NR 2 CYLINDER DISLODGED FROM CRANKCASE. ROD CAP FROM NR 2 ROD CAME OFF ROD BOLT, PN SL74644, AT LEAST ONE WAS FOUND BROKEN. THE OTHER BOLT WAS NOT FOUND. (X)
- [SDR CA000824013](https://openairdocs.org/sdr/CA000824013), Jul 31, 2000: CONTROL BOX. BURNED. (CAN) PILOT REPORTED SMOKE IN THE COCKPIT AND LANDED. INSPECTION FOUND THAT FM CONTROL HEAD WAS UNSERVICEABLE AND SMELLED BURNT. SERVICEABLE FM CONTROL HEAD WAS
- [SDR 20000719SH017](https://openairdocs.org/sdr/20000719SH017), Jun 21, 2000: ROD BOLT. BROKEN. ROD CAP CAME OFF NR 2 CYLINDER AS A RESULT OF EITHER SL74644 BREAKING OR SL128186 NUT BACKING OFF. (X)
- [SDR 20000719SH018](https://openairdocs.org/sdr/20000719SH018), Jun 21, 2000: NUT. FAILED. INTAKE GUIDE VARIANCE, 0.0020 INCH. (X)
- [SDR 20000720SH003](https://openairdocs.org/sdr/20000720SH003), Jun 21, 2000: ROD BOLT. BROKEN. NR 5 CYLINDER ROD CAP CAME OFF. BOTH ROD BOLTS WERE BROKEN. THE CYLINDER WAS BROKEN AND SEPARATED FROM CRANKCASE AT ITS FLANGE. (X)
- [SDR 20000720SH004](https://openairdocs.org/sdr/20000720SH004), Jun 21, 2000: NUT. BROKEN. NR 5 CYLINDER ROD CAP CAME OFF. BOTH ROD BOLTS WERE BROKEN. THE CYLINDER WAS BROKEN AND SEPARATED FROM CRANKCASE AT ITS FLANGE. (X)
- [SDR 20000711SH002](https://openairdocs.org/sdr/20000711SH002), Jun 14, 2000: NUT. SEPARATED. LEFT ENGINE LOST OIL PRESSURE. FEATHERED IN-FLIGHT. DISASSEMBLED ENGINE. ROD, P/N 75061, ON NR 4 CYLINDER BROKEN AND IT LOOKS AS IF ONE NUT CAME LOOSE CAUSING T
- [SDR CA000713002](https://openairdocs.org/sdr/CA000713002), Jan 20, 2000: BRACKET. CRACKED. (CAN) ON INSPECTION BOTH LT AND RT RUDDER PULLEY BRACKETS WERE FOUND CRACKED AT THE TOP PORTION. PULLEY BRACKETS WERE PATCHED USING THICKER ALUMINUM. FURTHER IN
- [SDR 20000713SH026](https://openairdocs.org/sdr/20000713SH026), May 21, 1999: STUD. BROKEN. NR 6 CYLINDER HOLD-DOWN STUDS, 4 EACH P/N 38-13, 2 EACH P/N 38-13, WERE BROKEN CAUSING OIL LEAKS AND VIBRATION. OIL LEAK WAS DETECTED ON POST-FLIGHT. (X)
- [SDR 20000714SH023](https://openairdocs.org/sdr/20000714SH023), May 21, 1999: CAMSHAFT. BROKEN. FORWARD END OF CAMSHAFT BROKE WHERE PROPELLER GOVERNOR DRIVING GEAR ATTACHES. THIS RESULTED IN LOSS OF PROPELLER GOVERNOR AND LOSS OF RPM. ENGINE WAS FEATHERED 
- [SDR 99ZZZX1008](https://openairdocs.org/sdr/99ZZZX1008), Feb 3, 1999: CYLINDER. MISOVERHAULED. UPON INSTALLING AN OVERHAULED CYLINDER, NOTED THE CYLINDER WAS NOT ALIGNED WITH THE ONE NEXT TO IT AT THE ROCKER BOX AREA. THE SHORTEST PUSH ROD WOULD NOT GO IN
- [SDR 99ZZZX584](https://openairdocs.org/sdr/99ZZZX584), Feb 27, 1998: STUD. BROKEN. LEFT ENGINE NR 2 CYLINDER BROKE 6 OF THE 8 STUDS HOLDING IT TO THE CRANKCASE. THIS RESULTED IN OIL LEAK AND CYLINDER FLANGE AND SKIRT BREAKING. TWO REMAINING ST
- [SDR 97ZZZX4454](https://openairdocs.org/sdr/97ZZZX4454), Sep 12, 1997: CYLINDER. SEPARATED. HEAD SEPARATED AT DOME. SEPARATION STARTED AT 4 O'CLOCK POSITION AND 11 O'CLOCK AND PROPAGATED UNTIL TOTAL FAILURE. EXHAUST AND OIL DRAIN HELD CYLINDER ON ENGIN
- [SDR 97ZZZX274](https://openairdocs.org/sdr/97ZZZX274), Dec 18, 1996: CYLINDER. CRACKED. PILOT REPORTED DROPPING CHT ON LEFT ENGINE. POST-FLIGHT REPORTED LARGE OIL LEAK. FOUND NR 6 CYLINDER HAD A CRACK THROUGH UPPER BASE FLANGE. FORWARD THREE CYLIND
- [SDR 96ZZZX1542](https://openairdocs.org/sdr/96ZZZX1542), Mar 11, 1996: CYLINDER. FAILED. NR 2 CYLINDER BROKE AT BASE. CYLINDER CAME LOOSE FROM THE CRANKCASE CAUSING ENGINE VIBRATION. PILOT SHUT DOWN ENGINE IN-FLIGHT. ON DISASSEMBLY, FOUND CRANKCASE 

## STCs that may be installed (OpenAirDocs) (44)

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 SE60WE](https://openairdocs.org/stc/SE60WE): Installation of two Rajay Turbochargers P/N RJ 0327-1 or -2 and 9 lb. Sonic nozzle. TALCO Aviation
- [STC SE6WE](https://openairdocs.org/stc/SE6WE): Installation of two Roto-Master Turbochargers Model No. 3DT5FF10J2, P/N 600572-00 (formerly Rajay Model 315F10, P/N RJ0080-100, or 102). TALCO Aviation
- [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 SE3329NM](https://openairdocs.org/stc/SE3329NM): 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

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