# Alliedsign ALF502L

- Type: Engine model (FAA registry)
- Registry code: 02641
- Manufacturer (registry): ALLIEDSIGN
- 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: 0 registered aircraft
- Page: https://openairdocs.org/engine/alliedsign-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

None registered with this engine model now.

## 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 (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

## PMA parts (OpenAirDocs) (43)

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.

- [2C-141-305-02](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID111586114820240815113948.0001): Gasket, Mounting Pad Probe. Power Turbine Components  LLC · PMA PQ2078NE · Replaces 2C-141-305-02 · Aug 1, 2024
- [152437-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID142983584620240716160350.0001): Manifold. Collins Engine Nozzles Inc. · PMA PQ3405CE · Replaces 2-163-620-39 · Jun 20, 2024
- [152437-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID134815188520240716160351.0001): Manifold. Collins Engine Nozzles Inc. · PMA PQ3405CE · Replaces 2-163-620-41 · Jun 20, 2024
- [152438-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID107057953620240716160351.0001): Manifold. Collins Engine Nozzles Inc. · PMA PQ3405CE · Replaces 2-163-620-42 · Jun 20, 2024
- [TECS26570-01](https://drs.faa.gov/browse/excelExternalWindow/9B4AD467751E542E8625845F0062DAC7.0001): Drains Tank Ejector Pump. Triumph Engine Control Systems, LLC · PMA PQ0108NE · Replaces 2-303-087-05 · Sep 4, 2018
- [2-131-159-01KT](https://drs.faa.gov/browse/excelExternalWindow/E04036448C6AB04C86257A6B0062143B.0001): Washer-Flat Sealing. Turbine Kinetics Inc, Subsidiary of HEICO Corp · PMA PQ0816NE · Replaces 2-131-159-01 · Aug 26, 2012
- [152805](https://drs.faa.gov/browse/excelExternalWindow/4E80E53DB4BFE5858625783A004E5903.0001): Nozzle Assembly. Delavan Inc. · PMA PQ3405CE · Replaces 2-310-213-01 · Feb 14, 2011
- [108200-01A5](https://drs.faa.gov/browse/excelExternalWindow/A4B96101AE0F9EA885257042005A1034.0001): MFP-45 Main Fuel Pump. Goodrich Pump & Engine Control Systems Inc · Replaces 774959-4 · Jan 31, 2005
- [ACA744F7Y1](https://drs.faa.gov/browse/excelExternalWindow/77C84A8081F1F46A852570460060DDDE.0001): Filter Element. Pall Aeropower Corp · Replaces 2-203-468-01 · Nov 24, 2002
- [108200A3](https://drs.faa.gov/browse/excelExternalWindow/B7491AA1CBD25037862574F8006AB373.0001): Fuel Pump. Goodrich Pump & Engine Control Systems Inc · PMA PQ0108NE · Replaces 774959-1 · Sep 10, 2002
- [108200-01A4](https://drs.faa.gov/browse/excelExternalWindow/9FF1F3432DB38AB3862574F8006ABF65.0001): Main Fuel Pump. Goodrich Pump & Engine Control Systems Inc · PMA PQ0108NE · Replaces 774959-3 · Sep 10, 2002
- [108200-01A3](https://drs.faa.gov/browse/excelExternalWindow/74AE4D4671AFAD6C862574F8006AB391.0001): Fuel Pump. Goodrich Pump & Engine Control Systems Inc · PMA PQ0108NE · Replaces 774959-2 · Sep 10, 2002
- [27331423-01](https://drs.faa.gov/browse/excelExternalWindow/7C83D0A6B53D42F785257042005E3103.0001): Controller Overspeed. Hamilton Sundstrand Power System · Replaces Replacement Parts · Jul 25, 1999
- [9040350-1](https://drs.faa.gov/browse/excelExternalWindow/3F1A5119F8DC833A8525704D004C8885.0001): Lead Assembly-Igniter (Right Side). Unison Industries · Replaces Allied Signal/ Textron Lycoming… · May 20, 1996
- [9040345-1](https://drs.faa.gov/browse/excelExternalWindow/18AF3B2350B4E3F88525704D004C8884.0001): Lead Assembly-Igniter (Left Side). Unison Industries · Replaces Allied Signal/ Textron Lycoming… · May 20, 1996
- [53282](https://drs.faa.gov/browse/excelExternalWindow/822D9F88E381EFE38525703E0068FAB2.0001): Lead Ignition Jumper Assembly "A". Champion Aerospace LLC · Replaces 2-303-025-02 · May 12, 1996
- [53281](https://drs.faa.gov/browse/excelExternalWindow/4B3703A77655A3958525703E0068FAB1.0001): Igniter Lead Assembly. Champion Aerospace LLC · Replaces 2-303-743-02 · May 12, 1996
- [53280](https://drs.faa.gov/browse/excelExternalWindow/21560F32B5FD83168525703E0068FAB0.0001): Igniter Lead Assembly. Champion Aerospace LLC · Replaces 2-303-742-02 · May 12, 1996
- [53283](https://drs.faa.gov/browse/excelExternalWindow/123F65C5C69AAA3A8525703E0068FAB3.0001): Lead Ignition Jumper Assembly "B". Champion Aerospace LLC · Replaces 2-303-079-02 · May 12, 1996
- [45904](https://drs.faa.gov/browse/excelExternalWindow/AAE17D4D2F6FF80C8525703E0068F3EE.0001): Valve, Pressuring. Delavan Inc. · PMA PQ3405CE · Replaces Lycoming 2-303-795-01 · Jan 26, 1995
- [37112](https://drs.faa.gov/browse/excelExternalWindow/7BDE238827EBFB768525703E0067EA47.0001): Nozzle Assembly. Delavan Inc. · PMA PQ3405CE · Replaces Lycoming 2-300-677-04 · Jan 26, 1995
- [59117](https://drs.faa.gov/browse/excelExternalWindow/646F8D210D6062B48525703E0068F495.0001): Nozzle Assembly. Delavan Inc. · PMA PQ3405CE · Replaces Lycoming 2-310-098-01 · Jan 26, 1995
- [48207](https://drs.faa.gov/browse/excelExternalWindow/52338C2D05CECCB78525703E0068F3F9.0001): Nozzle Assembly. Delavan Inc. · PMA PQ3405CE · Replaces Lycoming 2-310-011-01 · Jan 26, 1995
- [34050](https://drs.faa.gov/browse/excelExternalWindow/37A82AAC60BCBAB88525703E0067EA28.0001): Valve Assembly. Delavan Inc. · PMA PQ3405CE · Replaces Lycoming 2-300-711-01 · Jan 26, 1995
- [KTW2-121-042-19](https://drs.faa.gov/browse/excelExternalWindow/CD92EF35B7AF426C852570460059932A.0001): Vane, Second Turbine Nozzle. KTW Incorporated · Replaces Textron Lycoming 2-121-042-19 · Jan 17, 1995
- [KTW2-121-042-15](https://drs.faa.gov/browse/excelExternalWindow/B207A61380168F6A8525704600599329.0001): Vane, Second Turbine Nozzle. KTW Incorporated · Replaces Textron Lycoming 2-121-042-15 · Jan 17, 1995
- [31-75103-4015-5NAD Rev. B Dated 8/24/92](https://drs.faa.gov/browse/excelExternalWindow/DA8E02AEA5DFE459862574E5006BE962.0001): Lube and Scavenge Pump Assembly. Parker Hannifin Corp, Nichols Airborne Division · PMA PQ0953NE · Replaces Textron Lycoming P/N 2-303-734-01 Rev… · Jun 26, 1994
- [31-75103-4016-5NAD Rev. A](https://drs.faa.gov/browse/excelExternalWindow/170AB35924642589862574E5006BE999.0001): Lube and Scavenge Pump Assembly. Parker Hannifin Corp, Nichols Airborne Division · PMA PQ0953NE · Replaces Textron Lycoming P/N 2-193-790-01 Rev… · Jun 26, 1994
- [53283](https://drs.faa.gov/browse/excelExternalWindow/F6ED8FFF155ED1328525703E0068F46E.0001): Lead Ignition Jumper Assembly "B". Champion Spark Plug Co · Replaces Textron Lycoming 2-303-079-02 · Aug 16, 1992
- [53280](https://drs.faa.gov/browse/excelExternalWindow/E1647F06262AA37D8525703E0068F468.0001): Igniter Lead Assembly. Champion Spark Plug Co · Replaces Textron Lycoming 2-303-742-02 · Aug 16, 1992
- [53281](https://drs.faa.gov/browse/excelExternalWindow/DB96420557C0CFE68525703E0068F469.0001): Igniter Lead Assembly. Champion Aerospace LLC · Replaces Textron Lycoming 2-303-743-02 · Aug 16, 1992
- [305050](https://drs.faa.gov/browse/excelExternalWindow/886CA6AA403C52B68525703E006727EA.0001): Ignition Exciter. Champion Spark Plug Co · Replaces Textron Lycoming 2-303-026-02 · Aug 16, 1992
- [53282](https://drs.faa.gov/browse/excelExternalWindow/6014C3FFD33C2E568525703E0068F46B.0001): Lead Ignition Jumper Assembly "A". Champion Spark Plug Co · Replaces Textron Lycoming 2-303-025-02 · Aug 16, 1992
- [53283](https://drs.faa.gov/browse/excelExternalWindow/59AF1B9ED6F8F4808525703E0068F46D.0001): Lead Ignition Jumper Assembly "B". Champion Aerospace LLC · Replaces Textron Lycoming 2-303-079-02 · Aug 16, 1992
- [53281](https://drs.faa.gov/browse/excelExternalWindow/4A2BD489F70337CD8525703E0068F46A.0001): Igniter Lead Assembly. Champion Spark Plug Co · Replaces Textron Lycoming 2-303-743-02 · Aug 16, 1992
- [53282](https://drs.faa.gov/browse/excelExternalWindow/44EA8A10ACDEC0588525703E0068F46C.0001): Lead Ignition Jumper Assenbly "A". Champion Aerospace LLC · Replaces Textron Lycoming 2-303-025-02 · Aug 16, 1992
- [53280](https://drs.faa.gov/browse/excelExternalWindow/2E797804F3FB88A48525703E0068F467.0001): Igniter Lead Assembly. Champion Aerospace LLC · Replaces Textron Lycoming 2-303-742-02 · Aug 16, 1992
- [305050](https://drs.faa.gov/browse/excelExternalWindow/0AAA0171833634618525703E006727E9.0001): Ignition Exciter. Champion Aerospace LLC · Replaces Textron Lycoming 2-303-026-02 · Aug 16, 1992
- [108200-01](https://drs.faa.gov/browse/excelExternalWindow/3965903CCF1234E48525703E0065E4B6.0001): Main Fuel Pump MFP-45. Chandler Evans Inc, Control Sys Div · Replaces 774959-2 · Apr 19, 1992
- [Champion CH34452A](https://drs.faa.gov/browse/excelExternalWindow/F999A20597D4E29D8525703E006CB5E2.0001): Igniter. Champion Aerospace LLC · Replaces Textron Lycoming 2-300-732-04 · Nov 3, 1991
- [CH34279B](https://drs.faa.gov/browse/excelExternalWindow/A40CFFA92D50BCC98525703E006CB6DF.0001): Igniter. Champion Aerospace LLC · Replaces Lycoming 2-300-732-04 · Dec 6, 1988
- [F047546-15 Dwg No 047546-15 Rev H, dated 1-13-88 or later FAA approval](https://drs.faa.gov/browse/excelExternalWindow/E56A3542952E328786257870004C53B5.0001): Filter element Assembly. Purolator Facet Inc (formerly Facet Filter Products) · PMA PQ1207CE · Replaces Textron Lycoming P/N 2-300-848-02 · Mar 22, 1987
- [27331423-01](https://drs.faa.gov/browse/excelExternalWindow/257D4A91BA41562E862574F6006775F7.0001): Controller, Overspeed. Hamilton Sundstrand Corporation · PMA PQ2016CE · Sep 8, 1976

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