# Service difficulty reports: Lycoming ALF502R-3A

A list on [Lycoming ALF502R-3A](https://openairdocs.org/engine/lycoming-alf502r-3a.md).

Newest first. General aviation reporting is voluntary.

- [SDR AUS20031010](https://openairdocs.org/sdr/AUS20031010.md): Windshield · cracked · Oct 2, 2003 · Bac 146100A · Flight Compartment Windows
  > (AUS) RT WINDSCREEN (A) PANEL CRACKED IN OUTER PLY.
- [SDR AUS20030756](https://openairdocs.org/sdr/AUS20030756.md): Computer · faulty · Jul 25, 2003 · Bac 146100A · Brake Anti-Skid Section
  > (AUS) ANTI-SKID FAULT LIGHT ILLUMINATED DURING TAKEOFF ROLL. THE PROBLEM WAS FIXED BY RERACKING THE ANTI-SKID COMPUTER.
- [SDR AUS20030374](https://openairdocs.org/sdr/AUS20030374.md): Circuit Breaker · failed · Mar 26, 2003 · Bac 146100A · Fuel Boost Pump
  > (AUS) RT OUTER FUEL BOOST PUMP CIRCUIT BREAKER OVERHEATED AND BURNED. HEAT FROM THE BURNED CB DAMAGED THE ADJACENT BRAKE FAN CIRCUIT AND CAUSED FUMES IN THE FLIGHT DECK AND CABIN.
- [SDR AUS20021410](https://openairdocs.org/sdr/AUS20021410.md): Skin · cracked · Dec 9, 2002 · Bac 146100A · Fuselage Main, Plate/Skin
  > (AUS) FUSELAGE SKIN CRACKED IN AREA BETWEEN STRINGERS NR 12 AND 13 LOCATED IMMEDIATELY AFT OF FRAME 29, BENEATH THE WING ROOT DOUBLER ON THE LT SIDE. FOUND DURING INSPECTION IAW AD/BAE146/70.
- [SDR AUS20021183](https://openairdocs.org/sdr/AUS20021183.md): Manifold · faulty · Oct 6, 2002 · Bac 146100A · Engine Fuel Distribution
  > (AUS) ENGINE RT FUEL MANIFOLD LEAKING. NDT INVESTIGATION FOUND A WELD DEFECT AND CORROSION PITTING. DURING TROUBLESHOOTING, ONE OF THE BOLTS SECURING THE AFT COMBUSTOR FUEL DRAIN BROKE OFF REQUIRING THE ENGINE TO BE CHANGED.
- [SDR AUS20020723](https://openairdocs.org/sdr/AUS20020723.md): Indicator · failed · Jul 16, 2002 · Bac 146100A · Attitude Gyro and Indicating System
  > (AUS) NR 2 ATTITUDE DIRECTOR INDICATOR TOPPLED IN FLIGHT.
- [SDR AUS20020724](https://openairdocs.org/sdr/AUS20020724.md): Bolt · loose · Jul 13, 2002 · Bac 146100A · Drag Control Actuator
  > (AUS) RT AIRBRAKE ACTUATOR ATTACHMENT BOLT MIGRATED UPWARDS AND DAMAGED THE RT REAR FUSELAGE AT FRAME 50. INVESTIGATION FOUND THE NUT AND SPLIT PIN MISSING WITH THE WASHER FOUND IN THE AIRBRAKE BAY.SUSPECT SPLIT PIN NOT INSTALLED. PERSONNEL/MAINTENANCE ERROR.
- [SDR AUS20020685](https://openairdocs.org/sdr/AUS20020685.md): Cover · damaged · Jul 10, 2002 · Bac 146200A · Passenger/Crew Doors
  > (AUS) REAR (2L) DOOR LOWER HINGE COVER IMPACTED AND BUCKLED CAUSING COVER TO JAM ON THE DOOR WHEN CLOSED. PERSONNEL/MAINTENANCE ERROR.
- [SDR AUS20020677](https://openairdocs.org/sdr/AUS20020677.md): Odor · detected · Jun 28, 2002 · Bac 146200A · Air Distribution System
  > (AUS) NR 1 ENGINE FUMES ENTERING CABIN. LIMITED INFORMATION PROVIDED.
- [SDR AUS20020494](https://openairdocs.org/sdr/AUS20020494.md): Engine · failed · May 28, 2002 · Bac 146200A · Engine (Turbine/Turboprop)
  > (AUS) NR 1 ENGINE FAILED.
- [SDR AUS20020492](https://openairdocs.org/sdr/AUS20020492.md): Wire · unapproved part · May 27, 2002 · Bac 146100A · Fire Protection System Wiring
  > (AUS) APU FIRE BOTTLE SQUIB WIRE BETWEEN PIN 2 AND EARTH POINT WIRE WAS THE INCORRECT TYPE FOR THE APPLICATION. THE WIRE FITTED WAS A SINGLE CORE SHIELDED WIRE WITH 150 DEGREE BLUE AMP TERMINALS. THE CORRECT WIRE IS 16 GAUGE SINGLE CORE 260 DEGREE WIRE. A SIMI
- [SDR AUS20020400](https://openairdocs.org/sdr/AUS20020400.md): Ecu · failed · Apr 30, 2002 · Bac 146200A · Trailing Flap Position Indicating System
  > (AUS) FLAPS EXTENDED NORMALLY WITH THE FAULT LIGHT ILLUMINATED. INVESTIGATION FOUND THE FLAP ELECTRONIC CONTROL UNIT FAULTY.
- [SDR AUS20020314](https://openairdocs.org/sdr/AUS20020314.md): Generator · contaminated · Apr 4, 2002 · Bac 146100A · AC Generator-Alternator
  > (AUS) NR 1 INTEGRATED DRIVE GENERATOR CONTAMINATED. OPEN CIRCUIT ON FIELD WINDINGS.
- [SDR AUS20020296](https://openairdocs.org/sdr/AUS20020296.md): Isolation Valve · leaking · Apr 2, 2002 · Bac 146100A · Hydraulic System, Main
  > (AUS) NR 2 HYDRAULIC SYSTEM ISOLATION VALVE LEAKING INTERNALLY.
- [SDR AUS20020280](https://openairdocs.org/sdr/AUS20020280.md): Valve · faulty · Mar 26, 2002 · Bac 146100A · Engine Oil Temperature Regulator
  > (AUS) NO3 ENGINE OIL COOLER FUEL SYSTEM VERNATHERM VALVE SUSPECTFAULTY.
- [SDR AUS20020045](https://openairdocs.org/sdr/AUS20020045.md): Computer · faulty · Jan 19, 2002 · Bac 146200A · Trailing Edge Flap Control System
  > (AUS) FLAP SYSTEM INOPERATIVE. NO CAUSE COULD BE FOUND AND INVESTIGATION IS CONTINUING. FLAP COMPUTER PNO 676801007 CHANGED.
- [SDR AUS20011029](https://openairdocs.org/sdr/AUS20011029.md): Indicator · failed · Sep 27, 2001 · Bac 146100A · Attitude Gyro and Indicating System
  > (AUS) FIRST OFFICERS ATTITUDE INDICATOR FAILED.
- [SDR AUS20010961](https://openairdocs.org/sdr/AUS20010961.md): Pin · misinstalled · Sep 5, 2001 · Bac 146100A · Turbine Engine Compressor Section
  > (AUS) ENGINE FAN DISC RETAINING NUT LOCK CUP WASHER LOCKING PINS FLUSH WITH SHAFT MAKING LOCKING MECHANISM NON FUNCTIONAL.
- [SDR AUS20010970](https://openairdocs.org/sdr/AUS20010970.md): Pin · misinstalled · Sep 5, 2001 · Turbine Engine Compressor Section
  > (AUS) ENGINE FAN DISC RETAINING NUT LOCK CUP WASHER LOCKING PINS FLUSHWITH SHAFT MAKING LOCKING MECHANISM NON FUNCTIONAL. THE FAN HAD BEEN REMOVED TO SERVICE ANOTHER ENGINE.
- [SDR AUS20010835](https://openairdocs.org/sdr/AUS20010835.md): Fastener · corroded · Aug 1, 2001 · Bag BAE146100A · Fuselage Main, Frame
  > (AUS) DURING INSPECTION FOR LOCATION OF CENTRE FUEL TANK LEAK THE FOLLOWING DEFECTS WERE FOUND: 1. FRAME 29 LT HAND UPPER SIDE (AFT WING ATTACHMENTS) FASTENER IN POSITION NR 11 FOUND WITH SHEARED HEAD 2. FRAME 29 RIGHT HAND UPPER SIDE (AFT WING ATTACHMENT) FAS
- [SDR AUS20010740](https://openairdocs.org/sdr/AUS20010740.md): Circuit Breaker · faulty · Jul 16, 2001 · Bac 146100A · Windshield/Door Rain/Ice Removal
  > (AUS) LT A' SCREEN HEAT CIRCUIT BREAKER FAULTY. INVESTIGATION FOUND THE CIRCUIT BREAKER BURNED OUT ON A' PHASE.
- [SDR AUS20010622](https://openairdocs.org/sdr/AUS20010622.md): Skin · cracked · Jun 16, 2001 · Bag BAE146200A · Fuselage Main, Plate/Skin
  > (AUS) FUSELAGE SKIN CRACKED IN AREA LOCATED IMMEDIATELY AFT OF FRAME 29 BENEATH THE WING ROOT DOUBLER. FOUND DURING INSPECTION IAWISB53-144 AND AD/BAE146/70.
- [SDR AUS20010535](https://openairdocs.org/sdr/AUS20010535.md): Spar · corroded · Apr 26, 2001 · Bag BAE146100A · Wing Spar
  > (AUS) LT AND RT WING FORWARD AND AFT SPAR LOWER FLANGES CORRODED IN AREA BETWEEN RIB 13 AND RIB 18.
- [SDR AU010321](https://openairdocs.org/sdr/AU010321.md): Pipe · loose · Apr 10, 2001 · Bag BAE146100A · Fuel Controlling System
  > (AUS) NO3 ENGINE P3 SENSE LINE TO FCU LOOSE. THE AIRCRAFT HAD A NO3 ENGINE AND FCU CHANGED THE PREVIOUS DAY. PERSONNEL/MAINTENANCEERROR.
- [SDR AU010292](https://openairdocs.org/sdr/AU010292.md): Pipe · fractured · Apr 3, 2001 · Bag BAE146200A · Engine Fuel Distribution
  > (AUS) ENGINE FUEL PIPE FRACTURED. FUEL LEAKING.
- [SDR AU010258](https://openairdocs.org/sdr/AU010258.md): Spar · cracked · Feb 12, 2001 · Bag BAE146100A · Wing Spar
  > (AUS) LT AND RT WING FORWARD AND AFT LOWER SPAR CAPS CRACKED IN AREABETWEEN RIBS NR 13 AND NR 18. CORROSION ALSO FOUND ON LOWER SKINS AT RIB BAYS NR 13 TO NR 18.
- [SDR AU000666](https://openairdocs.org/sdr/AU000666.md): Engine · failed · Sep 1, 2000 · Bag BAE146100A · Engine (Turbine/Turboprop)
  > (AUS) NR 2 ENGINE TGT EXCEEDED 900 DEGREES AND FLAMES CAME FROM THEENGINE. THE ENGINE WAS REMOVED AND SENT FOR INVESTIGATION AND REPAIR.
- [SDR AU000764](https://openairdocs.org/sdr/AU000764.md): Indicator · faulty · Aug 29, 2000 · Bag BAE146200A · Attitude and Direction Data System
  > (AUS) ARTIFICIAL HORIZON FAULTY. A TOTAL OF THREE INDICATORS HAVE FAILED IN A FEW WEEKS.
- [SDR AU000494](https://openairdocs.org/sdr/AU000494.md): Indicator · fluctuates · Jun 16, 2000 · Bag BAE146200A · Engine EGT/TIT Indicating System
  > (AUS) NR 1 ENGINE TGT SYSTEM TERMINAL LOOSE AT FORWARD PYLON BREAK.
- [SDR AU000448](https://openairdocs.org/sdr/AU000448.md): Indicator · faulty · Jun 6, 2000 · Bag BAE146200A · Airspeed/Mach Indicator
  > (AUS) CAPTAINS AIRSPEED INDICATOR (ASI) FAULTY.
- [SDR AU000309](https://openairdocs.org/sdr/AU000309.md): Damper · fractured · Apr 29, 2000 · Bag BAE146200A · Passenger/Crew Doors
  > (AUS) RH FORWARD DOOR DAMPER CAN FRACTURED AT FORWARD SECTION. DAMAGE CAUSED TO FUSELAGE FRAME 14. DAMPER CAN IS A PRE-MOD 007714ATYPE.
- [SDR AU000219](https://openairdocs.org/sdr/AU000219.md): Pipe · failed · Apr 24, 2000 · Bag BAE146100A · Engine Fuel Distribution
  > (AUS) ENGINE FUEL PIPE FAILED. FUEL LEAK.
- [SDR AU000310](https://openairdocs.org/sdr/AU000310.md): Harness · worn · Feb 11, 2000 · Bag BAE146200A · Engine EGT/TIT Indicating System
  > (AUS) NR 2 ENGINE TGT HARNESS CHAFING AT PYLON TERMINAL BLOCK B2.
- [SDR AU990792](https://openairdocs.org/sdr/AU990792.md): Engine · failed · Aug 4, 1999 · Engine (Turbine/Turboprop)
  > (AUS) ENGINE FAN DECOUPLED FROM LP TURBINE. FULL FLOW CHIP DETECTOR CONTAMINATED AND OIL COLORED BLACK.
- [SDR AU990445](https://openairdocs.org/sdr/AU990445.md): Indicator · faulty · May 11, 1999 · Engine Vibration Analyzer
  > (AUS) NR 1 ENGINE VIBRATION INDICATOR FAULTY.
- [SDR AU990442](https://openairdocs.org/sdr/AU990442.md): Transducer · malfunctioned · May 6, 1999 · Bag BAE146100A · Engine Oil Pressure
  > (AUS) NR 3 ENGINE OIL PRESSURE TRANSDUCER FAULTY.
- [SDR AU960175](https://openairdocs.org/sdr/AU960175.md): Gear · separated · Jan 22, 1996 · Bac 146100A · Turbine Engine Accessory Drive
  > (AUS) ENGINE ACCESSORY GEARBOX INPUT BEVEL GEAR SEPARATED FROM MOUNTINGFLANGE - BOLTS WERE STILL ATTACHED TO THE GEAR AND BEARING HOUSING - FOUND WHEN ENGINE STRIPPED FOLLOWING OIL PRESSURE LOSS - SUSPECT CAUSED BY INSUFFICIENT BACKLASH BETWEEN THE SPIRAL INPU
- [SDR AU960055](https://openairdocs.org/sdr/AU960055.md): Gear · separated · Jan 21, 1996 · Bag BAE146100A · Turbine Engine Accessory Drive
  > (AUS) NO3 ENGINE ACCESSORY GEARBOX INPUT BEVEL GEAR SEPARATED FROM THE MOUNTING FLANGE IN THE CASE - THE SLIMSERTS AND BOLTS WERE STILL ATTACHED TO THE GEAR AND BEARING HOUSING - METAL CONTAMINATION OFENGINE OIL SYSTEM

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE engine_model_key = 'ALF502R3A'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/lycoming-alf502r-3a/reports

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