# Alliedsign ALF502L-2

- Type: Engine model (FAA registry)
- Registry code: 02642
- Manufacturer (registry): ALLIEDSIGN
- Model: ALF502L-2
- 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-2

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 2009-08-07](https://openairdocs.org/ad/2009-08-07): High-pressure compressor (HPC) first stage discs · Honeywell International ALF502L-2 and ALF502L-2C. Effective May 18, 2009
- [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 2003-02-01](https://openairdocs.org/ad/2003-02-01): Drain tube assemblies · Honeywell International ALF502L-2, ALF502L-2C, ALF502R-3 and 1 more. Effective Jan 30, 2003
- [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 (14)

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

- [SDR A8JA0007](https://openairdocs.org/sdr/A8JA0007), Aug 1, 2010: FIRE LOOP. LOOSE. DURING CLIMBOUT, PILOTS NOTED A FIRE BELL AND NR2 ENGINE FIRE WARNING LIGHT FOR A ONE SECOND DURATION. ACFT WAS APPROX 2500-3000 FT. CREW DECLARED AN EMERGENCY,
- [SDR CA041029002](https://openairdocs.org/sdr/CA041029002), Oct 18, 2004: BEARING. FAILED. (CAN) DURING 600 HRS INSPECTION OF NR 1 ENGINE AME NOTICED THAT THE LT THRUST REVERSER STRUT LOWER ATTACHEMENT WAS CHAFING AGAINST BRACE UPPER, AFTER CARRYING O
- [SDR CA020517008](https://openairdocs.org/sdr/CA020517008), Apr 4, 2002: CROSSBEAM. CRACKED. (CAN) DURING INTERNAL STRUCTURAL INSPECTION OF THE TAIL AREA, A 5/8 INCH CRACK WAS FOUND ON THE RUDDER CONTROL CROSS BEAM SUPPORT (EMPENNAGE).THE PROBABLE CAUSE
- [SDR 20001024AP004](https://openairdocs.org/sdr/20001024AP004), Jul 5, 2000: ENGINE. VIBRATION. FXE-MDSD - TAKEOFF FROM MDSD NORMAL, AFTER APPROX 2.2 HOURS, AT CRUISE ALTITUDE, SEVERE VIBRATIONS FROM NR 2 ENGINE NECESSITATED ITS SHUTDOWN. FLIGHT DIVERTED T
- [SDR CA000724012](https://openairdocs.org/sdr/CA000724012), Jul 5, 2000: ENGINE. FAILED. (CAN) DURING CRUISE AT 41,000 FT THE FLIGHT CREW NOTICED A SMALL SURGE IN POWER ON THE RT ENGINE FOLLOWED ABOUT 10 SECONDS LATER BY A DECREASE IN RPM AND INCREA
- [SDR CA000306004](https://openairdocs.org/sdr/CA000306004), Mar 1, 2000: ACTUATOR. FAILED. (CAN) NR 2 TMS ACTUATOR WHITE LIGHT ON IN FLIGHT AND ENGINE WOULD NOT SHUT DOWN NORMALLY. SHUT DOWN ACCOMPLISHED BY OVERSPEED TEST. REPLACED NR 2 TMS ACTUATOR A
- [SDR CA991209092](https://openairdocs.org/sdr/CA991209092), Dec 4, 1999: CONNECTOR. WORN. (CAN) ON CLIMB-OUT, NR 1 ENGINE FIRE FAULT FLICKERING. A/C LEVELED AND NR 1 ENGINE FIRE FAULT ON STEADY. ON APPROACH, FIRE BELL AND FIRE WARNING CAME ON. ENGINE
- [SDR CA991103053](https://openairdocs.org/sdr/CA991103053), Oct 27, 1999: SOCKET. FAILED. (CAN) CONDENSATION ACCUMULATING ON TOP OF FLUORESCENT LIGHT FIXTURE CAUSING SHORT CIRCUIT POSSIBLY LEADING TO SHOCK/FIRE. CONDENSATION OCCURS FROM THE USE OF VA
- [SDR 99ZZZX3566](https://openairdocs.org/sdr/99ZZZX3566), Aug 30, 1999: DUCT. CHAFED. DURING SCHEDULED INSPECTION, THE BLEED AIR DUCT, PN 215-0809-501, WAS FOUND CHAFING ON NR 2 BEARING OIL TUBE, PN 2-263-060-01. BOTH PARTS WERE CHAFED BEYOND LIM
- [SDR 98ZZZX3215](https://openairdocs.org/sdr/98ZZZX3215), Mar 29, 1998: SPACER. MISINSTALLED. HPN - NORMAL TAKEOFF EN ROUTE BAHAMAS. APPROX 1 HR EN ROUTE AT FL 310, PILOT NOTED NR 1 ENG VIBRATION INCREASE FROM .3 M/S TO .6 M/S AND INCREASE IN ENG NOISE. 
- [SDR CA960507010](https://openairdocs.org/sdr/CA960507010), Apr 9, 1996: PUMP. LEAKING. (CAN)OIL FOUND IN COWLING AND ON GROUND . OIL PUMP HAD A PINHOLE IN THE CASING, VERIFIED BY EDDY CURRENT INSPECTION
- [SDR 96ZZZX1690](https://openairdocs.org/sdr/96ZZZX1690), Mar 17, 1996: OIL TUBE. CHAFED. FIRE WARNING INDICATION ON RT ENGINE AND REPORTED THROTTLE POWER LESSENED WHILE AT CRUISE. RESTARTED, THROTTLE WARNING WENT OUT. UNSCHEDULED LANDING AT ICT. ENG
- [SDR 95ZZZX3630](https://openairdocs.org/sdr/95ZZZX3630), Jun 7, 1995: LOCK PIN. FAILED. OIL ANALYSIS, FINDING AN INCREASE IN METAL CONTAMINATION, INVESTIGATION REVEALED THE ACCESSORY DRIVE GEARBOX DRIVESHAFT LOCK ASSY POST SB ALF502L 72-0175, HAD D
- [SDR 95ZZZX1021](https://openairdocs.org/sdr/95ZZZX1021), Feb 13, 1995: FUEL CONTROL. FAILED. ENGINE FLAME-OUT AT FL370, ENGINE FAILED TO RESTART ON SUBSEQUENT ATTEMPTS. AIRCRAFT MADE A SAFE LANDING AT GULPORT, MS. INVESTIGATION REVEALED INTERNAL FAILURE

## PMA parts (OpenAirDocs) (20)

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
- [69540](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID165709366820250225152752.0001): Nozzle Assembly. Delavan Inc. · PMA PQ3405CE · Replaces Honeywell2-163-620-37 · Jul 8, 2004
- [69550](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID122558324520250225152752.0001): Nozzle Assembly. Delavan Inc. · PMA PQ3405CE · Replaces Honeywell2-163-620-38 · Jul 8, 2004
- [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
- [108200-01A3](https://drs.faa.gov/browse/excelExternalWindow/74AE4D4671AFAD6C862574F8006AB391.0001): Fuel Pump. Goodrich Pump & Engine Control Systems Inc · PMA PQ0108NE · Replaces 774959-2 · Sep 10, 2002
- [7588609-AM](https://drs.faa.gov/browse/excelExternalWindow/8CFAF77267622E058525704A00577CB2.0001): Element, Non Cleanable. PTI Technologies Inc · Replaces Avco Lycoming 2-303-468-02 · Sep 7, 2000
- [7588624-AM](https://drs.faa.gov/browse/excelExternalWindow/42F6269107118A328525704A00577CB4.0001): Element, Non Cleanable. PTI Technologies Inc · Replaces Avco Lycoming 2-303-431-02 · Sep 7, 2000
- [27331423-01](https://drs.faa.gov/browse/excelExternalWindow/7C83D0A6B53D42F785257042005E3103.0001): Controller Overspeed. Hamilton Sundstrand Power System · Replaces Replacement Parts · Jul 25, 1999
- [10-395390-2](https://drs.faa.gov/browse/excelExternalWindow/7D5D15CD41B4B0938525704C0058B0D8.0001): Lead. Unison Industries · Replaces Allied Signal/Textron Lycoming… · Apr 14, 1997
- [45904](https://drs.faa.gov/browse/excelExternalWindow/AAE17D4D2F6FF80C8525703E0068F3EE.0001): Valve, Pressuring. Delavan Inc. · PMA PQ3405CE · Replaces Lycoming 2-303-795-01 · 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
- [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
- [27331423-01](https://drs.faa.gov/browse/excelExternalWindow/257D4A91BA41562E862574F6006775F7.0001): Controller, Overspeed. Hamilton Sundstrand Corporation · PMA PQ2016CE · Sep 8, 1976

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