Allison 501-D22

Service difficulty reports · 43

Newest first. General aviation reporting is voluntary.

Query with SQL
duckdb -csv -c "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 = '501D22'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR VGCA20250513001Tach Generator · strippedRIGHT ENGINE RPM SPOOLED DOWN IN FLIGHT. ENGINE WAS SHUTDOWN. SUBSEQUENT INSPECTION FOUND THAT TACH GENERATOR DRIVE SHAFT WAS SPRIPPEDMay 13, 2025 · N391FL · Cvac STC3405800 · Engine RPM Indicating SystemSDR VGCA20241209001Check Valve · blockedON LANDING SMOKE FILLED CABIN AND COCKPIT. DURING SUBSEQUENT INSPECTION FOUND THAT ENGINE DRIVEN COMPRESSOR (CABIN) HAD OVERHEATED AND DUMPED OIL INTO CABIN AIR INLET DUCT. THE CAUSE FOR THE OVERHEAT CONDITION WAS A FAILED OIL CHECK VALVE.Dec 9, 2024 · N351FL · Cvac STC3405800 · Cabin Compressor SystemSDR VGCA20240207001Reduction Gb · pressure lossREDUCTION GEARBOX HAD INTERNAL FAILURE THAT CAUSED ENTIRE QUANITY OF ENGINE OIL TO FILL REDUCTION GEARBOX.Feb 7, 2024 · N371FL · Cvac STC3405800 · Turbine Engine Reduction GearSDR VGCA20220330001None · bypassingENGINE COMPRESSOR SURGED AND THEN FLAMED OUT AND AUTOFEATHERED AT THE END OF TAKE OFF PHASE.Mar 30, 2022 · N351FL · Cvac STC3405800 · Compressor Bleed ControlSDR VGCA20211023001Not Reported · not reportedENGINE FLAMEOUT / LOSS OF POWER DURING CRUISE. ACCESSOPRY DRIVE HOUSING GEARBOX IS NOT ROATATINGOct 23, 2021 · N351FL · Cvac STC3405800 · Powerplant SystemSDR VGCA20210510001Spar · corrodedRIGHT WING, REAR SPAR, UPPER RAIL CORRODED AT WING STATION 23. PERFORMED BLEND OUT IN THIS LOCATION PER ENGINEERING REPAIR.Apr 28, 2021 · N371FL · Cvac STC3405800 · Wing SparSDR VGCA20210510002Spar · corrodedRIGHT WING, REAR SPAR, UPPER RAIL CORRODED BETWEEN WING STATION 21 AND 22. SPLICED IN NEW SPAR RAIL SEGMENT PER ENGINEERING REPAIR.Apr 28, 2021 · N371FL · Cvac STC3405800 · Wing SparSDR VGCA20210510003Spar · corrodedRIGHT WING, REAR SPAR, LOWER RAIL CORRODED BETWEEN WING STATIONS 21 AND 23. PERFORMED BLEND OUT PER ENGINEERING REPAIRApr 28, 2021 · N371FL · Cvac STC3405800 · Wing SparSDR VGCA20210311001Fire Loop · shortedRIGHT ENGINE ZONE 1 FIRE WARNING IN FLIGHT, SHUT DOWN ENGINE, RETURNED TO AIRPORT. FOUND 2 SECTIONS OF FIRE DETECTOR LOOP BAD.Mar 11, 2021 · N361FL · Cvac STC3405800 · Fire DetectionSDR VGCA202006296001Oil System · leakingLOSS OF ALL OIL ON NR 1 ENGINE. SHUT DOWN ENGINE AND DECLARED AN EMERGENCY.Jun 26, 2020 · N361FL · Cvac STC3405800 · Turbine Engine Oil SystemSDR CA180103009Fire Detector · abnormal(CAN) IN FLIGHT, THE AIRCRAFT`S NR 1 ENGINE ZONE 2 FIRE WARNING ACTIVATED. THE FLIGHT CREW ACCOMPLISHED THE ENGINE FIRE WARNING SHUTDOWN PROCEDURE AND CHECKLISTS, WHICH RESULTED IN A PRECAUTIONARY ENGINE SHUTDOWN. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT LDec 29, 2017 · Cvac 340CVAC · Fire DetectionSDR VGCA20160311001Compressor · stalledNUMBER 1 COMPRESSOR STALLED. PRECAUTIONARY SHUTDOWN OF THE NR 1 ENG & RETURNED.Mar 11, 2016 · N371FL · Cvac STC3405800 · Turbine Engine Compressor SectionSDR LR7A2015091700608Housing · failedDURING CRUISE, NR 4 ENGINE FLAMED OUT. SHUTDOWN IAW QRH PROCEDURES. R & R VALVE HOUSING ASSY IAW HN61135.Sep 17, 2015 · N403LC · Lkheed 382G · Propeller Controlling SystemSDR CA150506018Drive Gear · misinstalled(CAN) LEFT MAIN PRESS & SCAVENGE OIL PUMP WAS INSTALLED DURING WINTER MX. AT SPRING RUN UP IT WAS NOTED THAT THE LT ENG MAIN OIL PRESS WAS NOT WITHIN SPECIFIED LIMITS. THE OIL PUMP WAS REMOVED & DISASSEMBLED. IT WAS DISCOVERED THAT THE DRIVE GEAR HAD BEEN IMay 5, 2015 · Cvac 34030 · Turbine Engine Oil SystemSDR CA130828014Tire · out of balance(CAN) NOSE WHEEL TIRES ON 2 SEPARATE ACFT, REPLACED DUE TO NOSE WHEEL SHIMMY ON EACH ACFT DURING TAKEOFF. 1 TIRE/RIM WAS REPLACED AUGUST 16,2013 AND THE OTHER AUGUST 19TH, 2013. REPLACEMENT OF THESE TIRES REMOVED THE SHIMMY FROM THE ACFT. WHEN TIRES WERE REAug 19, 2013 · Cvac 340CVAC · TireSDR CA130718004Strut · broken(CAN) AFTER TAKEOFF WITH A POSITIVE RATE OF CLIMB THE GEAR HANDLE WAS SELECTED UP. A LOUD BANG WAS HEARD AND THE "GEAR UNLOCKED" LIGHT REMAINED ILLUMINATED. THE LOAD WAS JETTISONED AT THE DESIGNATED ABORT SITE. THREE GEAR DOWN SOURCES WERE OBTAINED AFTER SELECJul 17, 2013 · Cvac 340CVAC · Nose/Tail Landing Gear Strut/AxleSDR VGCA20130401001Propeller · malfunctionedNR 2 PROPELLER AUTOFEATHER AFTER TAKEOFF.Apr 1, 2013 · N371FL · Cvac STC3405800 · Propeller SystemSDR CA130128022Rod End · worn(CAN) IN THE SUMMER OF 2011,PILOTS REPORTED THAT AT HIGH POWER SETTINGS IN CRUISE A HIGH FREQUENCY VIBRATION WAS FELT IN THE OTBD RUDDER PEDALS AND THE SEAT FRAMES. IT WAS ALSO NOTICED THAT THE OTBD STATIC WICKS OF THE LT ELEVATOR WOULD BE MISSING AFTER SOME FJan 28, 2013 · Cvac 340CVAC · Engine Mount SectionSDR VGCA201208240001Beam · crackedLEFT NOSE LANDING GEAR BEAM UPPER CHORD CRACKED.Aug 24, 2012 · N391FL · Cvac STC3405800 · Fuselage Main, StructureSDR CA120806002Motor · failed(CAN) DURING OPERATIONS IN A VERY HOT, 35C+, ENVIRONMENT, THE FAN UNIT OF THE ZEE SYS INC. AIR CONDITIONING SYS WOULD OVERTEMP AND BURN OUT, CREATING A BURNING ODOR AND OCCASIONAL SMOKE IN THE AIR CONDITIONING SYS. THE SYS WAS INSTALLED WHEN THE ACFT WAS CONJul 28, 2012 · Cvac 340CVAC · Air Distribution FanSDR CA120610001Solenoid · failed(CAN) ON APPROACH, CREW EXPERIENCED A HAZE IN THE COCKPIT AND NOTICED THE, CABIN COMPRESSOR OIL LOW, LIGHT ILLUMINATED. CREW DISCONNECTED THE EDC AND LANDED WITHOUT INCIDENT. MAINTENANCE DISCOVERED 3 SCREWS MISSING FROM THE EDC DUMP SOLENOID VALVE AND REPLACJun 4, 2012 · Cvac 340CVAC · Air Conditioning SystemSDR CA120823012Angle · cracked(CAN) DURING ANNUAL 375 HR INSPECTION, A CRACK WAS DISCOVERED VISUALLY IN THE NLG WHEEL WELL. MORE SPECIFICALLY, THE CRACK WAS LOCATED IN THE LT SIDE OF THE NLG BEAM, UPPER CHORD FROM FS 53 TO FS 46. THE LENGTH OF THE CRACK WAS DETERMINED BY LPI INSPECTION AFApr 2, 2012 · Cvac 340CVAC · Fuselage Miscellaneous StructureSDR CA120127013Fitting · cracked(CAN) DURING A 375 HR ANNUAL INSPECTION ON THE EXTERIOR OF THE EMPENNAGE, ELEVATOR AND HINGE ATTACHING PINS, BEARINGS AND BUSHINGS, THE SECOND FROM THE OTBD LT AND RT HINGE PIN FITTINGS WERE FOUND CRACKED AROUND THE RADIUS OF THE FITTING. FURTHER INVESTIGATIOJan 25, 2012 · Cvac 340CVAC · Elevator StructureSDR CA111025011Attach Bracket · cracked(CAN) DURING ANNUAL INSPECTION, FWD ECP BOX ATTACHMENT BRACKET, FOUND CRACKED IN UPPER AFT CORNER OF STRUCTURE ATTACH POINT. AFT ECP BOX PN 35E05-6D TOP ATTACH POINTS ALSO FOUND BROKEN. THIS IS THE SECOND ACFT IN OUR FLEET, WE HAVE DISCOVERED THIS DAMAGE IN Oct 24, 2011 · Cvac 340CVAC · Fuselage Main, Attach FittingsSDR CA110701001Relay · wrong partAFTER STARTING THE NR2 ENGINE, ELECTRICAL SMOKE FUMES DETECTED IN THE COCKPIT. SMOKE CONTINUED TO BUILD. ELECTRICAL FIRE SUSPECTED. THE CREW SHUTDOWN ACFT POWER AND ENGINES. DC BATTERY DISCONNECTED. AFTER SHUTDOWN SMOKE STOPPED. CREW INVESTIGATED SOURCE AJun 16, 2011 · Cvac 340CVAC · Electrical Power System WiringSDR CA110413016Line · leaking(CAN) ACFT DEPARTED AT ABOUT 1530Z. IN FLIGHT, THE CREW HAD LOST HYD QTY, DECLARED AN EMERGENCY AND RETURNED TO DEPARTURE. ACFT WAS TOWED TO RAMP AND MAINTENANCE DISCOVERED A HYD LEAK COMING FROM THE LT NACELLE AREA. MAINTENANCE FOUND A CHAFED PRESSURE HYD Apr 9, 2011 · Cvac 340CVAC · Hydraulic System, MainSDR CA101018014Hinge Fitting · damagedDURING THE ANNUAL 375 HR INSP, ELEVATOR/EMPENNAGE INSP PANELS WERE REMOVED. RT ELEVATOR OTBD STABILIZER TO ELEVATOR HINGE FITTING WAS FOUND GROOVED ON TOP RADIUS OF THE FITTING. INVESTIGATION REVEALED THAT THE SCREWS ATTACHING THE RT ELEVATOR END CAP FAIRING Oct 15, 2010 · Cvac 34035 · Elevator StructureSDR CA100521005Control Box · failedNR 1 ENGINE AC GENERATOR CAME OFF LINE DURING CRUISE, GENERATOR RESET AND STILL WILL NOT COME ON LINE, CONTROL BOXES SWAPPED AND FAULT TRANSFERED TO OTHER SIDE AND CONFIRMED. NEW CONTROL BOX INSTALLED AND GENERATOR CAME BACK ON LINE.May 17, 2010 · Cvac STC3405800 · AC Generator-AlternatorSDR CA090622015Generator · inoperative(CAN) ON APPROACH, PILOT NOTICED NR 1 AC GENERATOR INOP LIGHT ON AND VOLTMETER INDICATED 0 VOLTS. CIRCUIT METERED BACK THROUGH VOLTAGE REGULATOR AND FOUND OPEN FIELD. GENERATOR REPLACED.Jun 20, 2009 · Cvac 340CVAC · AC Generator-AlternatorSDR CA090617008Selector Valve · inoperative(CAN) PILOT UNABLE TO RETRACT FLAPS THROUGH NORMAL ELECTRIC FLAP CONTROL SWITCH. FLAPS RETRACTED USING MANUAL EMERGENCY FLAP SELECTOR. TROUBLESHOOTING DETERMINED ELECTRIC SOLENOID WAS WORKING BUT UNABLE TO POSITION VALVE INSIDE SELECTOR TO PORT PRESSURE TO FLJun 14, 2009 · Cvac 340CVAC · Trailing Edge Flap Control SystemSDR CA070824007Door · inoperative(CAN) AIRCRAFT WAS DISPATCHED FOR FIRE ACTION. AFTER DEPARTURE, THE RT OIL TEMPERATURE GAUGE WAS OBSERVED TO BE AT THE BOTTOM OF THE RED ARC, APPROXIMATELY 100 DEGREES C. THE FLIGHT CREW IMMEDIATELY SHUTDOWN THE RT ENGINE AS A PRECAUTION AND RETURNED TO BASE. Jul 25, 2007 · Cvac 440 · Engine Oil CoolerSDR CA070727009Lever · distorted(CAN) UPON SELECTION OF (GEAR DOWN), THE LOCKING ARM OF THE LANDING GEAR SELECTOR HANDLE STUCK IN THE EXTENDED POSITION, PREVENTING ASSOCIATED FUNCTION OF DEPRESSING THE GEAR WARNING LIGHT SWITCH. THE RESULT WAS NO GEAR DOWN INDICATING LIGHTS ON THE ANNUNCIATJul 23, 2007 · Cvac 440 · Landing Gear SelectorSDR CA070308004Control Switch · shorted(CAN) WHILE CARRYING OUT FLIGHT TRAINING THE LT GENERATOR WAS TURNED OFF. WHEN SELECTED BACK ON, IT WAS NOTED THAT SMOKE WAS COMING FROM THE VOLTAGE REGULATOR. THE GANG BAR WAS SELECTED TO SHUTOFF DC POWER. DURING TROUBLESHOOTING THE MAINTENANCE CREW DISCOVEREMar 6, 2007 · Cvac 340CVAC · DC Generating SystemSDR CA060617001Steering Sys · malfunctionedAFTER T/O, DURING L/G RETRACTION, NOSE WHEELS ENTERED W/W IN A RT TURN ATTITUDE, EVIDENT FROM WEAR MARKS ON TIRES AND RUBBER ON INTERIOR WALLS OF W/W. WHEN A/C LANDED, NOSE WHEELS WERE STILL TURNED TO THE RIGHT, UNKNOWN TO AIRCREW. CAPT TRIED TO STRAIGHTEN NJun 9, 2006 · Cvac 440 · Landing Gear Steering SystemSDR CA060426003Engine · failed(CAN) DURING CRUISE, THE CREW NOTICED THE TIT SPIKED TO 1100 DEGRESS F. THE HORSEPOWER DECREASED AND THE ZONE 1 FIRE BELL SOUNDED. THE E HANDLE AWAS PULLED AND THE ENGINE WAS SHUT DOWN AND THE PROPELLER FEATHERED. THE AIRCRAFT LANDED. MAINTENANCE CREW INSPECTEApr 24, 2006 · Cvac 340CVAC · Engine (Turbine/Turboprop)SDR 2005FA0000344Window · blew outDURING CRUISE FLIGHT AT FL230, THE FO SIDE WINDOW BLEW OUT; AT WHICH TIME, AN EMERGENCY DESCENT WAS EXECUTED TO AN UNEVENT LANDING. (K)Feb 22, 2005 · N391FL · Cvac 340CVAC · Flight Compartment WindowsSDR CA050329014Window · failed(CAN) THE OPERATOR HAS FILED AN INCIDENT REPORT WITH THE FAA. WINDOWPANE FAILURE AT CRUISE ALTITUDE OF 21,000 FT, WHICH CAUSED FOD DAMAGE TO THE RT ENGINE. THE WINDOW WAS LAST INSPECTED FEB 14 2005. REASON: COMPLETE FAILURE OF THE VINYL LINER AT THE EDGE OF Feb 22, 2005 · Cvac 340CVAC · Flight Compartment WindowsSDR CA040702005Switch · faulty(CAN) DURING CRUISE THE LT STARTER OVERSPEED LIGHT ILLUMINATED. THE ENGINE WAS SHUT DOWN AND THE PROPELLER WAS FEATHERED AS A PRECAUTION. THE AIRCRAFT RETURNED TO BASE. THE STARTER WAS REMOVED AND NO DAMAGE WAS NOTED. THE LIGHT SYSTEM WAS CHECKED FOR FAULTS NJun 22, 2004 · Cvac 340CVAC · Engine StarterSDR CA030115007Fitting · crackedTWO HOSE ASSEMBLIES (390A20D4.8 AND 390A20D12.5) FROM A FUEL SUPPLY "Y" MANIFOLD WAS REMOVED AND ROUTED TO OUR INTERNAL OVERHAUL SHOP FOR REPLACEMENT OF THE HOSES. UPON DISASSEMBLY, IT WAS DISCOVERED THAT THREE OF THE FOUR FITTINGS (SOCKETS) (AN212-20D) WERE Dec 23, 2002 · Cvac 340CVAC · Engine Fuel DistributionSDR CA010727017Gearbox · leaking(CAN) DURING CLIMB THROUGH FL170 AFTER DEPARTURE NOTICED NR 2 GEAR BOX OIL PRESSURE FLICKERING. OIL PRESSURE WAS STILL IN THE GREEN RANGE AND THE POWER SECTION OIL PRESSURE WAS NORMAL. ENGINE SHUT DOWN AND AIRCRAFT DIVERTED INTO YYZ.Jul 20, 2001 · Cvac 340CVAC · Turbine Engine Reduction GearSDR 20010220CW001Propeller · blownAIRCRAFT WAS COLD SOAKED, OUTSIDE TEMPERATURE BEFORE DEPARTURE WAS 15 DEGREES. SUBMITTER FEELS THIS WAS A CONTRIBUTING FACTOR TO THIS SEAL BEING DEFECTIVE. COMPANY INITIATED PROCEDURES NOT TO CHANGE PROP BLADE ANGLE UNTIL MINIMUM OF 40 DEGREE OIL TEMPERATUREJan 7, 2001 · N391FL · Cvac 340CVAC · Propeller SystemSDR CA981125001Gearbox · leaking(CAN) DURING CLIMB THROUGH FL 170, NR 2 GEARBOX OIL PRESSURE LIGHT FLICKERING. OIL PRESSURE WAS STILL IN THE GREEN RANGE AND THE POWER SECTION OIL PRESSURE LIGHT WAS NORMAL. OIL QUANTITY INDICATION DROPPED RAPIDLY AND THE LOW OIL PRESSURE LIGHT STARTED TO FLApr 9, 1998 · Turbine Engine Accessory DriveSDR CA990310067Gearbox · leaking(CAN) DURING CLIMB THROUGH FL 170, NR 2 ENGINE GEARBOX LIGHT FLICKERED. OIL PRESSURE WAS STILL IN THE GREEN AND THE POWER SECTION OIL PRESSURE WAS NORMAL. OIL QUANTITY INDICATION DROPPED RAPIDLY AND THE OIL PRESSURE LIGHT STARTED TO FLICKER. THE ENGINE WAS Apr 9, 1998 · Turbine Engine Accessory Drive
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