# Lycoming ALF502L - Type: Engine model (FAA registry) - Registry code: 41589 - Manufacturer (registry): LYCOMING - Model: ALF502L - Engine type: Turbo-fan - Power: 7,500 lb thrust - Data sheet: [TCDS E6NE](https://openairdocs.org/tcds/E6NE) (OpenAirDocs) - Holder: CFS Aeroproducts Inc. - Installed in: 4 registered aircraft - Page: https://openairdocs.org/engine/lycoming-alf502l 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 2020-18-09](https://openairdocs.org/ad/2020-18-09): Engine (Turbine/Turboprop); Engine Fuel and Control; Engine Emergency Shutdown System · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 9 more. Effective Oct 21, 2020 - [AD 2009-26-06](https://openairdocs.org/ad/2009-26-06): Fuel manifold assemblie · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 9 more. Effective Feb 11, 2010 - [AD 2006-09-13](https://openairdocs.org/ad/2006-09-13): Turbofan engines · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 7 more. Effective Jun 13, 2006 - [AD 2002-22-12](https://openairdocs.org/ad/2002-22-12): Titeflex hoses · BAE Systems ATP, Avro 146-RJ100A, Avro 146-RJ70A and 122 more. Effective Dec 13, 2002 - [AD 2002-12-08](https://openairdocs.org/ad/2002-12-08): Gas Producer Turbine (GPT) Components · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 9 more. Effective Jul 17, 2002 - [AD 2000-05-14](https://openairdocs.org/ad/2000-05-14): Bearing Inlet Assembly · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 9 more. Effective Apr 27, 2000 - [AD 96-04-02](https://openairdocs.org/ad/96-04-02): Compressor and Turbine Disks · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 2 more. Effective Apr 29, 1996 - [AD 93-14-13](https://openairdocs.org/ad/93-14-13): Third Stage Turbine Disk · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 7 more. Effective Oct 4, 1993 - [AD 93-10-07](https://openairdocs.org/ad/93-10-07): Third Stage Compressor Disks · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 7 more. Effective Aug 10, 1993 - [AD 91-14-05](https://openairdocs.org/ad/91-14-05): High Compressor Rotor Disks · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 2 more. Effective Jul 15, 1991 - [AD 87-15-03](https://openairdocs.org/ad/87-15-03): Gas Producer Turbine Spacer · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 7 more. Effective Jul 24, 1987 - [AD 86-07-13](https://openairdocs.org/ad/86-07-13): Fourth Stage Compressor Vane Assemblies · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 2 more. Effective Apr 11, 1986 - [AD 82-25-10](https://openairdocs.org/ad/82-25-10): First Stage Compressor Stator Vane Airfoils and/or Fourth Stage Turbine Blade Airfoils · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 4 more. Effective Dec 16, 1982 - [AD T83-03-51](https://openairdocs.org/ad/T83-03-51): Fourth Stage Turbine Rotors Assembly · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 7 more Historical (superseded or no longer in force): - [AD 97-05-11 R1](https://openairdocs.org/ad/97-05-11-R1) (historical): ALF502L, ALF502L-2, ALF502L-2A and 9 more. Effective Aug 18, 1997 - [AD 97-11-05](https://openairdocs.org/ad/97-11-05) (historical): Fuel Manifold Assemblies · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 9 more. Effective Jul 28, 1997 - [AD 95-04-11](https://openairdocs.org/ad/95-04-11) (historical): Third Stage Turbine Disks · Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 7 more. Effective Apr 3, 1995 - [AD 80-22-53](https://openairdocs.org/ad/80-22-53) (historical): Honeywell International ALF502L, ALF502L-2, ALF502L-2A and 1 more. Effective Dec 31, 1980 ## Registered aircraft (4) - [N163ET](https://openairdocs.org/aircraft/N163ET): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 1981, S/N 1035 - [N25V](https://openairdocs.org/aircraft/N25V): [Rr Aero LLC](https://openairdocs.org/faa-owner/RR%20AERO%20LLC), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), S/N 1015 - [N388DD](https://openairdocs.org/aircraft/N388DD): [Challenger Four LLC](https://openairdocs.org/faa-owner/CHALLENGER%20FOUR%20LLC), [Dublin, OH](https://openairdocs.org/faa-place/OH/Dublin), built 1983, S/N 1082 - [N396KM](https://openairdocs.org/aircraft/N396KM): [Aircraft Guaranty Corp Trustee](https://openairdocs.org/faa-owner/AIRCRAFT%20GUARANTY%20CORP%20TRUSTEE), [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City), built 1982, S/N 1059 ## 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 20031102028359I](https://openairdocs.org/incident/20031102028359I), Nov 2, 2003: Cndair CL6001A11 (N858PJ), San Francisco, CA. (-23) After take off and during climb out, at approximately 25K, the pilot saw engine caution light. Looked at instruments, noticed vibration analyzer for… ## Service difficulty reports (11) As reported by operators and repair stations, by the model named in the report. - [SDR CA040316005](https://openairdocs.org/sdr/CA040316005), Dec 6, 2003: ENGINE. FOD. (CAN) CREW REPORTED ENGINE VIBRATION DURING DESCENT. SUBSEQUENT TROUBLESHOOTING ON THE GROUND CONFIRMED THE VIBRATION ON DURING ENGINE DECELERATION. FOD DAMAGE - [SDR CA031118004](https://openairdocs.org/sdr/CA031118004), Nov 2, 2003: ENGINE. FAILED. (CAN) APPROX 20 MIN AFTER TAKE-OFF, THE CREW NOTICED A HIGH VIBE INDICATION ON THE RT ENGINE. THEY THROTTLED BACK TO IDLE WITH NO CHANGE IN VIBES. THE CREW ELEC - [SDR CA030916003](https://openairdocs.org/sdr/CA030916003), Aug 29, 2003: ENGINE. SHUTDOWN. (CAN) DURING CRUISE AT FL390, THE LT ENGINE ROLLED BACK AND SHUTDOWN. AN EMERGENCY WAS DECLARED. AT 10,000 FT. AN IN-FLIGHT WINDMILL START WAS SUCCESSFULLY ACCO - [SDR CA030722003](https://openairdocs.org/sdr/CA030722003), Apr 25, 2003: PUMP. FLUCTUATES. (CAN) DURING CRUISE, THE RT ENGINE OIL PRESSURE STARTED FLUCTUATING WITH HIGH VIBESMASTER CAUTION. CREW SHUT DOWN RIGHT ENGINE AND AN UNEVENTFUL LANDING WAS MAD - [SDR CA021129001](https://openairdocs.org/sdr/CA021129001), Nov 21, 2002: THRUST REVERSER. DAMAGED. (CAN) WHILE CLIMBING THROUGH 13,000 FT THE CREW HEARD A LOUD 'BANG' FOLLOWED BY A RT T/R UNLOCK INDICATION. THE CREW RETURNED TO THE POINT OF DEPARTURE AND LAND - [SDR CA021007013](https://openairdocs.org/sdr/CA021007013), Sep 11, 2002: NOZZLE. DEPARTED. (CAN) WHILE CLIMBING THROUGH 12,000 FT, CREW REPORTED HEARING A LOUD NOISE. AUTOPILOT IMMEDIATELY DISENGAGED AND BOTH ENGINES THROTTLED BACK. WITH THE ENGINES S - [SDR CA020626016](https://openairdocs.org/sdr/CA020626016), Jun 20, 2002: ENGINE. FAILED. (CAN) WHILE PERFORMING THE 5TH TOUCH AND GO DURING A TRAINING FLIGHT, THE AIRCRAFT PULLED TO THE LT AS ENGINE POWER WAS INCREASED TO TAKEOFF. THE CREW APPLIED R - [SDR CA020411002](https://openairdocs.org/sdr/CA020411002), Mar 23, 2002: LINE. CRACKED. (CAN) DURING CLIMB, CREW RECEIVED LT ENGINE FIRE WARNING. WARNING WENT OUT AFTER ENGINE THROTTLED BACK, BUT THEN ITT BEGAN CLIMBING. CREW SHUTDOWN ENGINE AND PE - [SDR CA000516033](https://openairdocs.org/sdr/CA000516033), Apr 11, 2000: FAN. FAILED. (CAN) FOLLOWING A/C ROTATIONAT 100AGL THE NUMBER 2 ENGINE AUTOMATICALLY SHUTDOWN WITH AN OVERSPEED INDICATION. N1 FAN WOULD NOT ROTATE. ENGINE REPLACED. - [SDR 95ZZZX5246](https://openairdocs.org/sdr/95ZZZX5246), Aug 17, 1995: CONTROLLER. FAILED. WHILE PERFORMING AN OVERSPEED SHUT-DOWN CHECK ON RIGHT ENGINE, THE ENGINE FAILED TO SHUT DOWN WHEN OVERSPEED TEST SWITCH WAS THROWN. THE PROBLEM WAS TRACED TO T - [SDR 95ZZZX5247](https://openairdocs.org/sdr/95ZZZX5247), Aug 17, 1995: OIL LINE. CHAFED. DURING A 100-HOUR PYLON INSPECTION, THE OIL FILTER TO NR 12 STRUT OIL LINE ASSEMBLY WAS FOUND CHAFING AGAINST THE 4 BOLT HEADS THAT SECURE THE APRON FRAME SUPPO --- 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.