# Service difficulty reports: Allison 501-D13D

A list on [Allison 501-D13D](https://openairdocs.org/engine/allison-501-d13d.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 4 · 160 reports

- [SDR CA190624017](https://openairdocs.org/sdr/CA190624017.md): Blanket · damaged · Jun 20, 2019 · Cvac 340CVAC · Airfoil Anti/De-ice System
  > (CAN) PILOT REPORTED CABIN FILLED WITH SMOKE AFTER TAKEOFF. ON LANDING, NO DETECTABLE SMOKE IN CABIN. ALL CIRCUIT BREAKERS AND FUSES CHECK, NO DEFECTS NOTED. GROUND RUN CARRIED OUT AND BURNING SMELL FOUND COMING FROM CENTER AREA OF CABIN WITH AIRFRAME DE-ICE O
- [SDR CA190610022](https://openairdocs.org/sdr/CA190610022.md): Computer · malfunctioned · Jun 9, 2019 · Cvac 340CVAC · Stall Warning System
  > (CAN) AOA FAIL LIGHT CAME ON IN FLIGHT. REPLACED AOA COMPUTER. GROUND CHECKED SERVICEABLE. (TC# 20190610022)
- [SDR CA190604026](https://openairdocs.org/sdr/CA190604026.md): Clamp · damaged · Jun 2, 2019 · Cvac 440 · Engine Collector/Tailpipe/Nozzle
  > (CAN) #1 ENGINE ZONE 1 FIRE INDICATION SHORTLY AFTER TAKEOFF. FIRE INDICATION CEASED FOLLOWING REDUCTION IN POWER. LOAD ABORTED AND #1 ENGINE EMERGENCY HANDLE ACTIVATED. #1 ENGINE TAILPIPE CLAMP P/N 4215AF18.92 FOUND BROKEN, CAUSING TAILPIPE SEPARATION. #1 ENG
- [SDR CA190527025](https://openairdocs.org/sdr/CA190527025.md): Starter · malfunctioned · May 23, 2019 · Cvac 440 · Engine Starter
  > (CAN) #1 STARTER OVERSPEED LIGHT ILLUMINATED IN FLIGHT, TRIGGERING MASTER CAUTION LIGHT. #1 STARTER OVERSPEED LIGHT REMAINED ILLUMINATED ON THE GROUND WITH #1 ENGINE STOPPED. #1 STARTER FAILED TO ENGAGE ON SUBSEQUENT START ATTEMPT. #1 STARTER REPLACED, STARTER
- [SDR CA190524027](https://openairdocs.org/sdr/CA190524027.md): Reduction Gb · making metal · May 21, 2019 · Cvac 340CVAC · Turbine Engine Reduction Gear
  > (CAN) LEFT HAND ENGINE REDUCTION GEARBOX CHIP PLUG FOUND TO HAVE METAL CONTAMINATION. ENGINE CHANGE COMPLETED. (TC# 20190524027)
- [SDR CA190430030](https://openairdocs.org/sdr/CA190430030.md): Switch · intermittent · Apr 28, 2019 · Cvac 340CVAC · Engine Controls
  > (CAN) HI/LOW ENGINE SPEED SELECTOR BUTTON FOR RH ENGINE INTERMITTENTLY SWITCHES FROM LOW TO HI SPEED. SWITCH REPLACED. GROUND FUNCTION CHECKED OK. (TC# 20190430030)
- [SDR CA190430029](https://openairdocs.org/sdr/CA190430029.md): Bearing · dirty · Apr 28, 2019 · Cvac 340CVAC · Engine Controls
  > (CAN) E-HANDLE FAILS TO PUSH IN COMPLETELY. ENGINE POWER AND EMERGENCY CONTROL INSTALLATION, RH, FOUND DIRTY AND STIFF TO MOVE. CONTROL INSTALLATION REMOVED, CLEANED, RE-INSTALLED AND FUNCTION CHECKED OK. (TC# 20190430029)
- [SDR CA190430027](https://openairdocs.org/sdr/CA190430027.md): Spring · failed · Apr 27, 2019 · Cvac 340CVAC · Trailing Edge Flap Control System
  > (CAN) FLAPS FAILED TO RETRACT FROM 40 DEGREE POSITION. CENTERING SPRING FOR EMERGENCY T-HANDLE FOUND TO BE DROOPING AND INTERFERING WITH ELECTRICAL SOLENOID RETRACT MECHANISM. T-HANDLE WITNESS WIRED IN NEUTRAL POSITION TO STOP INTERFERENCE FOR TEMPORARY FIX.
- [SDR CA190430024](https://openairdocs.org/sdr/CA190430024.md): Hose · leaking · Apr 26, 2019 · Cvac 340CVAC · Engine Fuel Distribution
  > (CAN) DURING A-CHECK OF CONVAIR, RH QEC FUEL LINE FROM FUEL FILTER/PUMP ASSY TO FCU IINLET LEAKING FOUND AT FUEL PUMP/FILTER SIDE. HOSE REPLACED. GROUND FUNCTION CHECKED SERVICEABLE. (TC# 20190430024)
- [SDR CA190508004](https://openairdocs.org/sdr/CA190508004.md): Bushing · loose · Mar 5, 2019 · Cvac 440 · Landing Gear Retraction/Extension System
  > (CAN) RH MLG WOULD NOT LATCH UP AFTER TAKE-OFF, BUSHING FOUND LOOSE ON EMERGENCY UPLATCH CYLINDER, PREVENTING UPLATCH FROM FULLY RETRACTING. CYLINDER REPLACED, FUNCTION NORMAL. (TC# 20190508004)
- [SDR CA180103010](https://openairdocs.org/sdr/CA180103010.md): Housing · cracked · Jan 2, 2018 · Cvac 340CVAC · Hydraulic System, Main
  > (CAN) DURING FLT CREW AND MTC WALK AROUND CHECKS, THE AIRCRAFT`S MAIN HYDRAULIC SYSTEM FILTER HOUSING ASSY WAS CRACKED AND HAD FAILED. FILTER HOUSING ASSY LOCATED NEAR AC HYDRAULIC PUMP ASSY. THE MAIN HYDRAULIC SYSTEM FILTER HOUSING ASSY WAS REPLACED AND THE
- [SDR CA160216027](https://openairdocs.org/sdr/CA160216027.md): Bypass Valve · cracked · Feb 16, 2016 · Cvac 340CVAC · Hydraulic System, Main
  > (CAN) AFTER LANDING, THE AIRCRAFT EXPERIENCED A HYDRAULIC SYSTEM BY-PASS VALVE FAILURE. THE FLIGHT CREW ACCOMPLISHED THE APPROPRIATE SHUT DOWN CHECKLIST PROCEDURES WITHOUT FURTHER INCIDENT. THE MAINTENANCE INSPECTION FOUND THE HYDRAULIC BY-PASS VALVE CASING HA
- [SDR CA150824004](https://openairdocs.org/sdr/CA150824004.md): O-Ring · damaged · Aug 18, 2015 · Cvac 340CVAC · Hydraulic System, Main
  > (CAN) A HYD LEAK WAS DISCOVERED ON THE BOMB TANK HYD MANIFOLD. O-RING SEAL WAS DAMAGED AND LEAKING.
- [SDR CA150911008](https://openairdocs.org/sdr/CA150911008.md): Clamp · failed · Aug 10, 2015 · Cvac 340CVAC · Engine Collector/Tailpipe/Nozzle
  > (CAN) IN FLIGHT, THE NUMBER 1 ENGINE ZONE 1 FIRE WARNING LIGHT ILLUMINATED. THE FLIGHT CREW OPTED TO REDUCE THE POWER LEVER SETTING ON THE NR 1 ENGINE AND THE FIRE WARNING LIGHT EXTINGUISHED. THE FLIGHT CREW CONTINUED ON TO ITS FINAL DESTINATION. THE MAINTENAN
- [SDR CA150806006](https://openairdocs.org/sdr/CA150806006.md): Spring · broken · Aug 5, 2015 · Cvac 340CVAC · Trailing Edge Flap Control System
  > (CAN) FLAP WOULD DO AN UN-COMMANDED TO THE UP POSITION WITH THE FLAP SWITCH IN NEUTRAL POSITION WHEN SELECTED DOWN FLAP WOULD MOVE DOWN. THE FLAP SELECTOR WOULD NOT RETURN TO NEUTRAL POSITION & OVER SHOOT TO THE UP SELECTED POSITION DUE TO A BROKEN SPRING INSI
- [SDR CA150804001](https://openairdocs.org/sdr/CA150804001.md): Coupling · damaged · Aug 2, 2015 · Cvac 340CVAC · Propeller Controlling System
  > (CAN) WHILE DOING AUTO FEATHER CHECK RT PROPELLER WOULD NOT FEATHER. PROP WOULD FOLLOW POWER LEVER COMMANDS. FEATHER SOLENOID FOUND TO BE THE FAULT. THE COUPLING ASSY OF THE FEATHER SOLENOID CAME UNSCREWED. DUE TO THE FACT THAT IT WAS NO LOCK WIRED COUPLING AS
- [SDR CA150720008](https://openairdocs.org/sdr/CA150720008.md): Hub · making metal · Jul 15, 2015 · Cvac 340CVAC · Propeller Hub Section
  > (CAN) DURING AUTO FEATHER CHECK, NR 1 PROPELLER HAD VIBRATION AT LOW SPEED GROUND IDLE WHILE GREASING NR 1 PROPELLER IN ORDER TO RESOLVE VIBRATION. METAL CONTAMINATION WAS FOUND IN PROP HUB GREASE AND PROP REGULATOR FILTER.
- [SDR CA150703014](https://openairdocs.org/sdr/CA150703014.md): Rod End · broken · Jul 2, 2015 · Cvac 340CVAC · Landing Gear Door Retract Section
  > (CAN) UPON SELECTING GEAR UP ON TAKE-OFF, PILOTS NOTICED A LOUD BANG. ONCE OVER THE FIRE, A BIRDDOG AIRCRAFT CONFIRMED THEIR RT GEAR DOOR FOR THE NOSE GEAR WAS OPEN. AIRCRAFT LANDED AND RH DOOR ACTUATING ROD UPPER ROD END, WAS FOUND BROKEN. A NEW ROD END WAS I
- [SDR CA150630009](https://openairdocs.org/sdr/CA150630009.md): Switch · failed · Jun 29, 2015 · Cvac 340CVAC · Propeller Feathering/Reversing
  > (CAN) NR 1 ENG FAILS TO AUTO FEATHER. THRUST SENSITIVE SWITCH FOUND TO BE FAILED OPEN. SWITCH REPLACED & GND FUNCTION CHECKED OK.
- [SDR CA150629014](https://openairdocs.org/sdr/CA150629014.md): Pressure Switch · failed · Jun 26, 2015 · Cvac 340CVAC · Cabin Equipment/Furnishings
  > (CAN) LOW PRESS LIGHT ILLUMINATED ON NORMAL SYS BOMB TANK CONTROL HEAD. ISOLATION VALVE FOUND CHATTERING. FAILED LOW PRESS SWITCH, ILLUMINATING LOW PRESS LIGHT.
- [SDR CA150625002](https://openairdocs.org/sdr/CA150625002.md): Adapter · cracked · Jun 24, 2015 · Cvac 340CVAC · Hydraulic Pump (Electric/Engine), Main
  > (CAN) NR 1 ENG DRIVEN HYD PUMP ADAPTER PLATE CRACKED. THE CRACK CAUSED ONE OF FOUR HYD PUMP ATTACH STUDS TO SEPARATE FROM THE MOUNT. HYD PUMP FUNCTION & SECURITY OF ATTACHMENT WAS NOT AFFECTED.
- [SDR CA150619008](https://openairdocs.org/sdr/CA150619008.md): Flange · cracked · Jun 17, 2015 · Cvac 440 · Landing Gear Brake System
  > (CAN) MAIN GEAR SENT TO SHOP FOR REPAIR. CRACKS ON BOTH LT & RT IB BRAKE FLANGES VISUALLY INDICATED. CRACKS (2) CONFIRMED USING MAGNETIC PARTICLE INSPECT METHOD.
- [SDR CA150610007](https://openairdocs.org/sdr/CA150610007.md): Yoke · sheared · Jun 9, 2015 · Cvac 440 · Cargo/Baggage Doors
  > (CAN) C1 DOOR AFT YOKE SHEARED DURING FLIGHT AT FL220, RAPID DECOMPRESSION & EMER DESCENT. NO INJURIES.
- [SDR CA150107009](https://openairdocs.org/sdr/CA150107009.md): Crosstube · damaged · Jan 2, 2015 · Cvac 34030 · Rudder Control System
  > (CAN) DURING ROUTINE INSPECTION A NON-STANDARD REPAIR ON RUDDER PEDAL CROSSOVER WAS IDENTIFIED COUSING CONTACT WITH CASTING AT FULL RUDDER TRAVEL, DUE TO REPAIR DOULER BEING TOO THICK. THIS MADE ATTACH HARDWARE LONGER AND CAUSED THE HARDWARE TO MAKE CONTACT WI
- [SDR CA140826029](https://openairdocs.org/sdr/CA140826029.md): Regulator Valve · broken · Aug 23, 2014 · Cvac 340CVAC · Engine Oil Indicating System
  > (CAN) FLUCTUATING POWER SECTION OIL PRESSURE WAS IDENTIFIED DURING UPSHIFT FROM LOW TO HIGH RPM. THE POWER SECTION PRESSURE SCAVENGE PUMP ASSEMBLY WAS REMOVED AND THE POPPET TIP FROM THE PRESSURE REGULATOR VALVE WAS FOUND IN THE RETURN CAVITY OF THE PUMP BLOCK
- [SDR CA140714018](https://openairdocs.org/sdr/CA140714018.md): Adapter · leaking · Jul 13, 2014 · Cvac 440 · Phase Adapter
  > (CAN) THE AIRCRAFT RETURNED TO BASE AFTER COMPLETING THEIR MISSION AND THE PILOT REPORTED A SMOKY ODOR IN THE COCKPIT. IT WAS NOT AN ELECTRIC BURNING ODOR. THE ODOR WAS TRACKED DOWN TO BE COMING FROM THE HR 2 AC PHASE ADAPTOR. THERE WAS A YELLOW FLUID COMING
- [SDR CA140522012](https://openairdocs.org/sdr/CA140522012.md): Wire · broken · May 20, 2014 · Cvac 340CVAC · Fire Protection System Wiring
  > (CAN) FIRE WARNING TEST DISPLAYED ALL 3 ZONES ON LT & RT ENGINES, NO WARNING HORN DETECTED. WIRE FROM A/C MAIN BUSS BAR, 28 VDC FOUND TO HAVE BREAK. NEW WIRE INSTALLED AND SYSTEM GROUND FUNCTION CHECKED OK.
- [SDR CA140407013](https://openairdocs.org/sdr/CA140407013.md): Gear · wrong part · Mar 12, 2014 · Cvac 340CVAC · Nacelle/Pylon, Main Frame
  > (CAN) WHILE ATTEMPTING TO RIG A NACELLE VENT DOOR, IT WAS DISCOVERED THAT THE ACTUATOR HAD A DIFFERENT GEAR RATIO THAN IS REQUIRED. INVESTIGATION REVEALED THAT THE ACTUATOR, PN 85891-02, CAME FROM THE MFG WITH DIFFERENT MODEL NUMBERS THAT DENOTE DIFFERENT GEA
- [SDR CA130822009](https://openairdocs.org/sdr/CA130822009.md): Module · inoperative · Aug 19, 2013 · Cvac 340CVAC · Propeller Synchronizer Section
  > (CAN) NR 1 ENGINE HAS DRAMATIC RPM FLUCTUATIONS IN ALL BUT THE "OFF" SETTING IN THE SYNC SYSTEM.
- [SDR CA130827003](https://openairdocs.org/sdr/CA130827003.md): Oil System · leaking · Aug 16, 2013 · Cvac 440 · Turbine Engine Oil System
  > (CAN) NR 2 ENGINE EMITTING OIL FROM BEARING AREA.
- [SDR CA130815011](https://openairdocs.org/sdr/CA130815011.md): Actuator · leaking · Aug 14, 2013 · Cvac 340CVAC · Landing Gear Steering System
  > (CAN) NOSE WHEEL STEERING ACTUATOR LEAKING FLUID.
- [SDR CA130803012](https://openairdocs.org/sdr/CA130803012.md): Fire Detector · chafed · Aug 2, 2013 · Cvac 340CVAC · Fire Detection
  > (CAN) ON TAXI, CREW EXPERIENCED A NR 1 ENGINE, ZONE 3, FIRE WARNING. THE ENGINE WAS SHUT DOWN AND THE ACFT RETURNED TO THE RAMP. MAINTENANCE DISCOVERED A FIRE LOOP CHAFING ON THE NACELLE VENT DOOR FLEX DRIVE. THE FLEX DRIVE WAS RE-POSITIONED, THE FIRE LOOP R
- [SDR CA130802001](https://openairdocs.org/sdr/CA130802001.md): Propeller · making metal · Jul 30, 2013 · Cvac 340CVAC · Propeller Assembly
  > (CAN) METAL IN PROPELLER, WOULD NOT UNFEATHER.
- [SDR CA130710004](https://openairdocs.org/sdr/CA130710004.md): Adapter · burned · Jul 8, 2013 · Cvac 340CVAC · DC Rectifier/Converter
  > (CAN) SMELT SMOKE IN COCKPIT. CO-PILOTS HSI NAVIAGATION FAILED. ACFT RETURNED TO BASE. TROUBLESHOT AND FOUND CO-PILOTS GYRSON COMPASS NOT WORKING AND FOUND PHASE ADAPTER FRIED. REPLACED PARTS, SYS GROUND CHECKED SERVICABLE.
- [SDR CA130704006](https://openairdocs.org/sdr/CA130704006.md): Warning Light · malfunctioned · Jul 2, 2013 · Cvac 340CVAC · Landing Gear Position and Warning
  > (CAN) ON APPROACH, CREW EXPERIENCED THREE GREEN, DOWN AND LOCKED, LIGHTS AS WELL AS THE RED, IN-TRANSIT, LIGHT. CREW ELECTED TO OVERSHOOT AND CYCLE THE GEAR. AFTER THE SECOND EXTENSION OF THE GEAR, THE, IN-TRANSIT, LIGHT EXTINGUISHED AND THE ACFT LANDED. MAI
- [SDR CA130702013](https://openairdocs.org/sdr/CA130702013.md): Window · cracked · Jun 27, 2013 · Cvac 340CVAC · Flight Compartment Windows
  > (CAN) THE CREW REPORTED THAT AFTER TAXI IN TO PARKING, THEY NOTICED A SMALL CRACK IN THE CAPTAIN`S WINDOW OUTER GLASS PANE, WHICH SLOWLY EXTENDED ACROSS THE ENTIRE LENGTH OF THE OUTER PANE. THE ACFT WAS FERRIED TO A MAINTENANCE FACILITY FOR WINDOW REPLACEMENT.
- [SDR CA130709015](https://openairdocs.org/sdr/CA130709015.md): Inlet · damaged · May 15, 2013 · Cvac 340CVAC · Engine Air Intake System
  > (CAN) DURING A PREFLIGHT INSPECTION THE NR 2 HEATED ENGINE AIR INLET DUCT WAS FOUND TO HAVE HEAT DAMAGE. THE INLET DUCT WAS REPLACED AND THE ACFT WAS RETURNED TO SERVICE.
- [SDR CA130425001](https://openairdocs.org/sdr/CA130425001.md): Fitting · broken · Apr 24, 2013 · Cvac 440 · Landing Gear Actuator
  > (CAN) MECHANIC FOUND BROKEN LT MLG ACTUATOR FITTING ON WALKAROUND, SERVICE CHECK.
- [SDR CA130412010](https://openairdocs.org/sdr/CA130412010.md): Wire · chafed · Apr 10, 2013 · Cvac 340CVAC · Fire Protection System Wiring
  > (CAN) IN THE MIDDLE OF COMPLETING TASKS FOR THE APPROACH, THE AMBER EXTINGUISHER DISCHARGE LIGHT BECAME STEADILY ILLUMINATED. IN THINKING IT WAS A ZONE FIRE LIGHT, ACTIONS WERE TAKEN TO COMPLETE THE ENGINE FIRE AFTER BSEC MEMORY ITEMS. THE ENGINE WAS SHUTDOWN
- [SDR CA130116016](https://openairdocs.org/sdr/CA130116016.md): Skin · cracked · Jan 14, 2013 · Cvac 340CVAC · Wing, Plate/Skin
  > (CAN) DURING COMPLETION OF A CORROSION INSPECTION ON THE INTERNAL STRUCTURE OF THE WING A 28" CRACK OF THE LOWER WING SKIN WAS DISCOVERED. LOCATED APPROXIMATELY 8" INBD OF RT RIB BS 6. RUNNING FORE AND AFT. 2 PHOTOS ADDED TO THE SDR DEPICTING REPORTED CRACK
- [SDR CA121224001](https://openairdocs.org/sdr/CA121224001.md): Gearbox · failed · Dec 21, 2012 · Cvac 440 · Turbine Engine Reduction Gear
  > (CAN) AT APPROXIMATELY 60 MILES EAST OF AIRPORT, ACFT OPERATING AS NRL950 ON A IFR FLIGHT, REPORTED LOSS OF AN ENGINE AND DECLARED AN EMERGENCY. ARFF RESPONDED AND ACFT LANDED WITHOUT INCIDENT AT 1949Z. SUSPECTED ENGINE GEAR BOX FAILURE, SHOP REPORT TO FOLL
- [SDR CA120822010](https://openairdocs.org/sdr/CA120822010.md): Clamp · broken · Aug 19, 2012 · Cvac 440 · Engine Collector/Tailpipe/Nozzle
  > (CAN) ON CLIMBOUT, THE CREW HAD A ZONE 1 FIRE INDICATION, THEY THROTTLED BACK AND INDICATION LIGHT WENT OUT. THEY E-HANDLED THE ENGINE, JETTISONED THE LOAD AND RETURNED TO THE AIRPORT. A BROKEN EXHAUST CLAMP WAS FOUND AT THE FWD END OF THE AFT LONG PORTION
- [SDR CA120807007](https://openairdocs.org/sdr/CA120807007.md): Bearing · failed · Jul 30, 2012 · Cvac 340CVAC · Accessory Gearboxes
  > (CAN) BEARING FAILURE IN ACCESS GEARBOX, FOUND STEEL BEARING BALLS ON MAGNETIC PLUG.
- [SDR CA120706006](https://openairdocs.org/sdr/CA120706006.md): Solenoid · shorted · Jul 4, 2012 · Cvac 440 · Propeller Controlling System
  > (CAN) RIGHT PROPELLER SOLENOID CIRCUIT BREAKER TRIPPED. RESET BREAKER RT PROPELLER SOLENOID SHORT INTERNALLY WAS REPLACED ABOUT 30 FLIGHT HRS AGO.
- [SDR CA110915002](https://openairdocs.org/sdr/CA110915002.md): Bearing · faulty · Sep 7, 2011 · Cvac 440 · Turbine Engine Compressor Section
  > (CAN) ON A RUNNING TEST RUN ENGINE NR 1 LOST HP AND TIT STARTED TO RAPIDLY CLIMB, PILOT E-HANDLE, LANDED WITH NR 1 ENGINE FEATHERED. ON GROUND INSPECTION, THE COMPRESSOR BLADES WERE RUBBING AGAINST THE CASE. SUSPECT FAULTY BEARING.
- [SDR CA110916002](https://openairdocs.org/sdr/CA110916002.md): Gear · damaged · Sep 5, 2011 · Cvac 340CVAC · Propeller System
  > (CAN) LEFT ENGINE SPOOLED DOWN AT TAKEOFF POWER.
- [SDR CA110624002](https://openairdocs.org/sdr/CA110624002.md): Line · leaking · Jun 19, 2011 · Cvac 440 · Hydraulic System, Main
  > LEAKING HYD FLUID AT BULKHEAD FITTING. TUBE WAS EITHER CRACKED OR THE FLARE WAS BAD.
- [SDR CA110613007](https://openairdocs.org/sdr/CA110613007.md): Exhaust Duct · separated · Jun 4, 2011 · Cvac 340CVAC · Engine Collector/Tailpipe/Nozzle
  > NR 2 ENGINE AFT EXHAUST SECTION SEPARATED FROM FWD SECTION.
- [SDR CA110412007](https://openairdocs.org/sdr/CA110412007.md): Wheel · cracked · Apr 12, 2011 · Cvac 340CVAC · Wheel/Ski/Float
  > (CAN) NOSE WHEEL WAS REMOVED DUE TO A SHIMMY. WHEEL ASSY WAS DISASSEMBLED AND PAINT REMOVED TO INCORPORATE GS-SL-46 FOR CORROSION PROTECTION. DURING LPI INSPECTION, CRACKS WERE IDENTIFIED ON BOTH WHEEL HALVES. WHEEL HALVES WERE PLACED IN QUARANTINE.
- [SDR CA110314012](https://openairdocs.org/sdr/CA110314012.md): Scavenge Pump · failed · Mar 12, 2011 · Cvac 340CVAC · Turbine Engine Oil System
  > (CAN) ON SHUTDOWN AFTER NORMAL FLIGHT WITH NO REPORTED PROBLEMS, OIL BEGAN LEAKING FROM AC GENERATOR DRIVE ON LH ENGINE. AC GEN DRIVE SEAL HAD FAILED, BUT THE RGB SCAVENGE SYSTEM HAD ALSO ALLOWED THE ENTIRE OIL TANK TO DRAIN INTO THE RGB. SUSPECTED FAILED SCAV

Next page: https://openairdocs.org/engine/allison-501-d13d/reports.md?page=2

## 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 = '501D13D'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/allison-501-d13d/reports

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