# Lycoming TIO-541-E1C4

- Type: Engine model (FAA registry)
- Registry code: 41963
- Manufacturer (registry): LYCOMING
- Model: TIO-541-E1C4
- Engine type: Reciprocating
- Power: 380 hp
- Data sheet: [TCDS E10EA](https://openairdocs.org/tcds/E10EA) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 9 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-tio-541-e1c4

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 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 2011-13-03](https://openairdocs.org/ad/2011-13-03): Turbocharger Turbine · Lycoming Engines LTO-360-E1A6D, O-540-L3C5D, TIGO-541-E1A and 20 more. Effective Jul 13, 2011
- [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 2002-12-07](https://openairdocs.org/ad/2002-12-07): Oil Filter Converter Plate Gasket or the Converter Plate Kit · Lycoming Engines HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 95 more. Effective Jul 3, 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 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 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 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

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 2000-18-53](https://openairdocs.org/ad/2000-18-53) (historical): Oil Filter Converter Plate Gaskets · Textron Lycoming, AVCO AEIO-540, IO-360-A1B6D, IO-360-A1D6D and 73 more

## Information bulletins (advisory) (4)

- [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019
- [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014
- [SAIB NE-09-31R1](https://openairdocs.org/saib/NE-09-31R1): Turbocharging: Rebuilt by Kelly Aerospace Energy Systems. Issued Jul 9, 2009
- [SAIB NE-09-31](https://openairdocs.org/saib/NE-09-31) (historical): Turbocharging: Rebuilt by Kelly Aerospace Energy Systems. Issued May 27, 2009

## Registered aircraft (9)

- [N214CK](https://openairdocs.org/aircraft/N214CK): [Breland Michael](https://openairdocs.org/faa-owner/BRELAND%20MICHAEL), [Olympia, WA](https://openairdocs.org/faa-place/WA/Olympia), built 1976, S/N P399
- [N422SB](https://openairdocs.org/aircraft/N422SB): [Hudak Christopher](https://openairdocs.org/faa-owner/HUDAK%20CHRISTOPHER), [South Miami, FL](https://openairdocs.org/faa-place/FL/South%20Miami), built 1978, S/N P-479
- [N557PA](https://openairdocs.org/aircraft/N557PA): [Platinum Leasing LLC](https://openairdocs.org/faa-owner/PLATINUM%20LEASING%20LLC), [Fate, TX](https://openairdocs.org/faa-place/TX/Fate), built 1981, S/N P-580
- [N66PL](https://openairdocs.org/aircraft/N66PL): [Valiair Lc Trustee](https://openairdocs.org/faa-owner/VALIAIR%20LC%20TRUSTEE), [Casper, WY](https://openairdocs.org/faa-place/WY/Casper), built 1980, S/N P-532
- [N678AJ](https://openairdocs.org/aircraft/N678AJ): [Aj Air LLC](https://openairdocs.org/faa-owner/AJ%20AIR%20LLC), [Brookfield, WI](https://openairdocs.org/faa-place/WI/Brookfield), built 1975, S/N P363
- [N8466N](https://openairdocs.org/aircraft/N8466N): [Francois Paul](https://openairdocs.org/faa-owner/FRANCOIS%20PAUL), [Aurora, CO](https://openairdocs.org/faa-place/CO/Aurora), built 1968, S/N D-8800
- [N850YR](https://openairdocs.org/aircraft/N850YR): [Nhv LLC](https://openairdocs.org/faa-owner/NHV%20LLC), [Orlando, FL](https://openairdocs.org/faa-place/FL/Orlando), built 1981, S/N P581
- [N892MC](https://openairdocs.org/aircraft/N892MC): [Mcn Aviation LLC](https://openairdocs.org/faa-owner/MCN%20AVIATION%20LLC), [San Antonio, TX](https://openairdocs.org/faa-place/TX/San%20Antonio), built 1975, S/N P-353
- [N901AT](https://openairdocs.org/aircraft/N901AT): [Qualitair LLC Trustee](https://openairdocs.org/faa-owner/QUALITAIR%20LLC%20TRUSTEE), Michelstadt, built 1974, S/N P272

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR19FA115](https://openairdocs.org/ntsb/WPR19FA115), Apr 19, 2019: Beech 60 (N65MY), Fullerton, CA, destroyed, 1 fatal. Probable cause: The pilot’s use of an unapproved elevator control lock device, and his failure to remove that device and correctly position the elevator before flight, which resulted in a loss of control during…

## 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.

- [Accident 20190418003029A](https://openairdocs.org/incident/20190418003029A), Apr 18, 2019: Beech B-60 (N65MY), Fullerton, CA, Destroyed, 1 fatal. Aircraft was taking off on runway 24 at approximately 1949 hours on April 18, 2019. On the takeoff roll as the aircraft reached approximately 13O0 feet from…
- [Incident 20140301001839I](https://openairdocs.org/incident/20140301001839I), Mar 1, 2014: Beech B-60 (N691SZ), Wichita, KS, Minor damage. On March 1, 2014, at approximately 1200 local, (1800 UTC), the multi-engine, instrument rated private pilot landed short of the runway at Wichita Mid-Continent…

## Service difficulty reports (36)

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

- [SDR 2022FA0000025](https://openairdocs.org/sdr/2022FA0000025), Jun 2, 2021: NONE. NONE. LEFT ENGINE BECAME ROUGH IN CRUISE. AIRCRAFT LANDED UNEVENTFULLY. FOUND #2 CYLINDER HYDRAULIC LIFTER P/N: 15B28037 COLLAPSED. INTAKE VALVE STEM BROKEN. PISTON D
- [SDR 2022FA0000024](https://openairdocs.org/sdr/2022FA0000024), May 19, 2021: NONE. COLLAPSED. RIGHT ENGINE BECAME ROUGH IN CRUISE. AIRCRAFT LANDED UNEVENTFULLY. FOUND #2 CYLINDER HYDRAULIC LIFTER P/N: 15B28037 COLLAPSED. INTAKE VALVE STEM BROKEN. PISTON 
- [SDR MI22018F00000](https://openairdocs.org/sdr/MI22018F00000), Oct 25, 2018: INTAKE VALVE. BROKEN. PILOT SAYS HE WAS CLIMBING THROUGH 17000` WHEN THE RT ENG LOST POWER AND WAS RUNNING ROUGH. THE PILOT DESCENDED AND LANDED WITH THE LT ENG. REMOVED COWLING AND 
- [SDR 2017FA0000029](https://openairdocs.org/sdr/2017FA0000029), Jan 26, 2017: HUB. CRACKED. A HUB CRACK DISCOVERED DURING ROUTINE MAINTENANCE. THE HUB WAS REPLACED WITH A SERVICEABLE UNIT.
- [SDR CA150408033](https://openairdocs.org/sdr/CA150408033), Feb 27, 2015: ALTIMETER. DAMAGED. (CAN) IN FLIGHT AT ALTITUDE OF 14,000 FEET NR 2 ALTIMETER DISPLAYED 10,000 FEET. CORRECT ALTITUDE CONFIRMED BY ATC & CROSS SIDE INSTRUMENT. MX INVESTIGATION FOU
- [SDR PCPR20131218001](https://openairdocs.org/sdr/PCPR20131218001), Nov 8, 2013: CRANKCASE. CRACKED. OPERATOR REPORTED OIL IN ENGINE COMPARTMENT. TECHNICIAN PERFORMED VISUAL INSPECTION AND FOUND CRACK IN ENGINE CRANKCASE FORWARD OF NR 2 CYLINDER FLANGE.
- [SDR CA120326008](https://openairdocs.org/sdr/CA120326008), Mar 15, 2012: BOLT. LOOSE. (CAN) DURING TROUBLESHOOTING FOR AN UNRELATED PROBLEM, A BOLT PN#AN174-15A/M WAS FOUND LOOSE ON THE INBD PIVOT LOCATION OF THE L/H ELEVATOR. AN ANNUAL INSPECTIO
- [SDR 2010FA0000063](https://openairdocs.org/sdr/2010FA0000063), Jan 21, 2010: MOTOR. SEIZED. LANDING GEAR FAILED TO EXTEND. ACFT LANDED GEAR UP. FOUND ELECTRIC MOTOR SEIZED. COULD NOT EXTEND LANDING GEAR MANUALLY.
- [SDR CA091013004](https://openairdocs.org/sdr/CA091013004), Oct 7, 2009: HUB. DAMAGED. (CAN) PROPELLER WAS RECEIVED FOR O/H DUE TO A FOREIGN OBJECT STRIKE. WHEN THE PAINT WAS REMOVED FROM THE HUB CORROSION IN THE BLADE SEAL GROOVES WAS NOTED. AFTE
- [SDR CA091013005](https://openairdocs.org/sdr/CA091013005), Oct 7, 2009: FORK. DAMAGED. (CAN) PROPELLER WAS RECEIVED FOR O/H DUE TO A FOREIGN OBJECT STRIKE. DURING MPI OF THE PITCH CHANGE FORK CRACKS WERE FOUND COMING FROM THE PITCH CHANGE BLOCK SL
- [SDR CA090424005](https://openairdocs.org/sdr/CA090424005), Apr 23, 2009: G SWITCH. FAILED. (CAN) WHILE PERFORMING 12 MONTH INSP OF ELT IAW CAR 571 APPENDIX G THE G SWITCH FAILED TO OPERATE. G SWITCH REPLACED AND UNIT RETURN TO SERVICE.
- [SDR CA090409004](https://openairdocs.org/sdr/CA090409004), Apr 7, 2009: INTAKE VALVE. BROKEN. (CAN) PILOT REPORTED LT ENG RUNNING ROUGH, NO INDICATION ON GRAPHIC ENGINE MONITOR FOR CYL NR 5. OPENED COWLINGS, INSPECTED CYL NR 5, CHECKED SPARK PLUGS, CHECK
- [SDR CA080806005](https://openairdocs.org/sdr/CA080806005), Aug 1, 2008: TURBOCHARGER. MALFUNCTIONED. (CAN) PILOT REPORTED LOW MANIFOLD PRESSURE ON LT ENG IN CLIMB OUT, ACFT RETURNED TO THE AIRPORT. MAINT BACK FLUSHED THE LT TURBO WASTEGATE AND CONTROLLER, GROUN
- [SDR CA080208002](https://openairdocs.org/sdr/CA080208002), Feb 8, 2008: ELT. FAILED. (CAN) WHEN TESTING THE ELT AT ITS ANNUAL INSP THE ELT HAD NO MODULATION AND NO OUTPUT POWER. THE ELT REPLACED WITH A SERVICEABLE UNIT. (TC NR 20080208002)
- [SDR 2007FA0000886](https://openairdocs.org/sdr/2007FA0000886), Aug 17, 2007: ENGINE. MAKING METAL. DURING ROUTINE OIL CHANGE, METAL SHAVINGS WERE FOUND IN OIL FILTER AND SCREEN. SHAVINGS WERE MAGNETIC. THESE ENGINES DO HAVE WEAR ISSUES ON CAM AND LIFTERS. AFT
- [SDR 2007FA0000393](https://openairdocs.org/sdr/2007FA0000393), Apr 9, 2007: OIL COOLER. CRACKED. ON APRIL 9, 2007, MADE A PRECAUTIONARY LANDING, AL (TCL) DUE TO LOW OIL PRESSURE ON THE LEFT ENGINE. MAINTENANCE PERSONNEL REPORTED THAT THE OIL COOLER HAD FAIL
- [SDR CA070319006](https://openairdocs.org/sdr/CA070319006), Mar 14, 2007: TAPPET. SPALLED. (CAN) ENGINE MODIFIED IAW FIREWALL FORWARD CENTRILUBE STC. PREVIOUS EXPERIENCE WITH THIS ENGINE SERIES PROMPTS REGULAR TAPPET INSPECTIONS. TAPPETS INSPECTED AND
- [SDR 2005FA0000766](https://openairdocs.org/sdr/2005FA0000766), May 3, 2005: CYLINDER. CRACKED. DURING DIFFERENTIAL COMPRESSION TEST, AIR WAS HEARD LEAKING FROM LOWER CYLINDER AREA. COMPRESSION WAS 40/80. USING LIQUID LEAK DETECTOR, FOUND AIR BLOWING OUT F
- [SDR CA050228008](https://openairdocs.org/sdr/CA050228008), Feb 28, 2005: CONTROL CABLE. FRAYED. (CAN) (.0625) ELEVATOR TRIM CABLE WAS FOUND WITH WIRES BROKEN IN A CRITICAL FATIGUE AREA, (.2500) LENGTH FROM AFT END, THROUGH THE IDLER PULLY AND CAPSTAN OF BE
- [SDR 2005FA0000463](https://openairdocs.org/sdr/2005FA0000463), Feb 11, 2005: WHILE INVESTIGATING OIL LEAK FROM TURBO, FOUND IMPELLER/TURBINE SHAFT HOLD DOWN NUT LOOSE ALLOWING SHAFT TO MOVE LATERALLY. THIS CAUSED SHAFT TO BECOME UNSEATED
- [SDR 2003FA0001101](https://openairdocs.org/sdr/2003FA0001101), Oct 5, 2003: ROD. DESTROYED. ON FINAL APPROACH, LEFT ENGINE, NR 5 ROD BROKE AND BROKE CRANKCASE.
- [SDR 2002FA0001091](https://openairdocs.org/sdr/2002FA0001091), Sep 5, 2002: LIFTER. SPALLED. SEVEN SPALLING OF LIFTERS AND CAM SHAFT WITH ONLY 130 HOURS USE. ALSO FAILED WITH 60 HOURS USE.
- [SDR 2002FA0000992](https://openairdocs.org/sdr/2002FA0000992), Aug 8, 2002: PIN. FAILED. THE LIFTER BORES WERE ALL SLEEVED (ALL 12) NOTE: THE SLEEVES CAME LOOSE IN ALL THE HOLES (EXCEPT TWO) ROTATING AND BLOCKING OFF OIL PASSAGES. THERE WERE NO STAN
- [SDR 2001FA0000572](https://openairdocs.org/sdr/2001FA0000572), Nov 6, 2001: LIFTER. SPALLED. UPON REMOVAL OF PUSH RODS AND PUSH ROD TUBES FOR RESEAL, THE LIFTERS WERE REMOVED FOR BLEEDING. THE LIFTERS WERE INSPECTED AND WERE FOUND TO HAVE SEVERE SPALLIN
- [SDR 2001FA0000655](https://openairdocs.org/sdr/2001FA0000655), Nov 6, 2001: LIFTER. SPALLED. UPON REMOVAL OF PUSH RODS AND PUSH ROD TUBES FOR RESEAL. THE LIFTERS WERE REMOVED FOR BLEEDING. THE LIFTERS WERE INSPECTED AND WERE FOUND TO HAVE SEVERE SPALLIN
- [SDR CA000920015](https://openairdocs.org/sdr/CA000920015), Aug 15, 2000: BOLT. SHEARED. (CAN) THE NR 3 CYLINDER CONNECTING ROD BOLT FAILED DUE TO FATIGUE, OR DEFECTIVE MATERIAL.
- [SDR 98ZZZX2275](https://openairdocs.org/sdr/98ZZZX2275), Apr 20, 1998: CONNECT ROD. FAILED. NR 3 CYLINDER ROD BROKE IN CRUISE FLIGHT.
- [SDR AU970408](https://openairdocs.org/sdr/AU970408), Apr 22, 1997: ADAPTER. CRACKED. (AUS) LANDING GEAR ATTACHMENT BRACKET CRACKED
- [SDR 97ZZZX980](https://openairdocs.org/sdr/97ZZZX980), Jan 24, 1997: UNION. DETACHED. CYLINDER DRAIN FITTING CAME OUT OF HEAD. DRAIN LINE WAS STILL ATTACHED. THIS CAUSED ERRONEOUS READINGS ON SENSE SYSTEM.
- [SDR 97ZZZX607](https://openairdocs.org/sdr/97ZZZX607), Jan 1, 1997: DISTRIBUTOR GEAR. TEETH MISSING. ENG QUIT IN FLT. RETURNED TO 5B5. FOUND ON BOTH MAGNETOS ALMOST 100 PERCENT OF THE TEETH ON DISTRIBUTOR GEARS WERE MISSING (SHEARED OFF), BOTH DISTRIBUTOR GEAR 
- [SDR 97ZZZX608](https://openairdocs.org/sdr/97ZZZX608), Jan 1, 1997: DISTRIBUTOR GEAR. TEETH MISSING. ENG QUIT IN FLT. RETURNED TO 5B5. FOUND ON BOTH MAGNETOS ALMOST 100 PERCENT OF THE TEETH ON DISTRIBUTOR GEARS WERE MISSING (SHEARED OFF), BOTH DISTRIBUTOR GEAR 
- [SDR CA960604005](https://openairdocs.org/sdr/CA960604005), Jun 4, 1996: BEARING. SCORED. (CAN)PROP WENT INTO FEATHER AT ENGINE IDLE. PROP CONTROL OIL LEAK TEST PERFORMED PER LYCOMING S.L. 1462, NOT WITHIN LIMITS. NON FERROUS METAL IN FILTERS. ENGINE
- [SDR AU960487](https://openairdocs.org/sdr/AU960487), Apr 18, 1996: COIL. CRACKED. (AUS) RH ENGINE LH MAGNETO 'CLEAR CASE' COIL DETERIORATED AND CASE SEVERLY CRACKED - FOUND DURING INSPECTION IAW AD/ELECT/66 AMDT 1 - AIRCRAFT WAS PREVIOUSLY RE
- [SDR 96ZZZX2074](https://openairdocs.org/sdr/96ZZZX2074), Feb 28, 1996: CYLINDER. FAILED. DURING ENGINE RUN-UP FOR TAKEOFF, ENGINE QUIT. INVESTIGATION BY BORESCOPE FOUND NR 4 CYLINDER EXHAUST VALVE NOT WORKING. REMOVED ROCKER BOSS AND FOUND EXHAUST V
- [SDR 95ZZZX5525](https://openairdocs.org/sdr/95ZZZX5525), Sep 8, 1995: GASKET. FAILED. INTAKE TO CYLINDER GASKET FAILED NEAR BOLT HOLE AFTER 10 HOURS FLIGHT. SURFACE PLATE TEST REVEALED NO ABNORMALITIES IN SEALING SURFACE. GASKET SHOWED DEFINITE I
- [SDR 95ZZZX3948](https://openairdocs.org/sdr/95ZZZX3948), Jun 23, 1995: OIL TUBE. BROKEN. RIGHT ENGINE OIL LEAK. IN-FLIGHT SHUT DOWN. FOUND OIL TUBE FOR NR 4 CYLINDER EXHAUST VALVE BROKEN. SUSPECT CAUSE - A) OVERTORQUED AT INSTALLATION. B) BUMPED WIT

## STCs that may be installed (OpenAirDocs) (26)

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 SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd
- [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation 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 SE01714SE](https://openairdocs.org/stc/SE01714SE): Install valve push rod seals Part Number CB-15 and retainer rings Part Number CB-14. B & B Aviation LLC
- [STC SE01716SE](https://openairdocs.org/stc/SE01716SE): Install one engine set (12) CB-15861 valve lifters. B & B Aviation LLC
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists TIO-541 Series
- [STC SE00218NY](https://openairdocs.org/stc/SE00218NY): Replacement of Lycoming starter with SKY-TEC 12 volt starter installed. Hartzell Engine Technologies, LLC. Lists TIO-541 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 TIO-541 Series
- [STC SE00584DE](https://openairdocs.org/stc/SE00584DE): Installation of modified Oil Filter Adapter, an increased opening pressure spring for filter bypass, and modified filter stud. Centri-Lube Technologies LLC
- [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc
- [STC SE3350NM](https://openairdocs.org/stc/SE3350NM): Installation of American Aviation intercooler and associated systems. American Aviation Inc
- [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-541 Series
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation
- [STC SE7674SW](https://openairdocs.org/stc/SE7674SW): Grind nitrided cylinder barrels plus .010 over size pistons, to .010 and install SL10545P10 SL74241P10 compression rings and SL73857P10 Oil Control rings. Superior Air Parts, Inc
- [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co. Lists TIO-541 Series
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists TIO-541 Series
- [STC SE3346NM](https://openairdocs.org/stc/SE3346NM): Installation of Merlyn Products Inc induction air intercooler system. Merlyn Products Inc
- [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-541 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-541 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-541 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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