Allison 501-D13
Service difficulty reports · 195
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 = '501D13' 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.
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 = '501D13' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR LR7A9804Compressor · wornNR 3 ENGINE AUTO FEATHERED ON T/O. PULLED EMERGENCY SHUTDOWN HANDLE AT 0038Z. REPLACED NR 3 SPEED SENSE VALVE IAW MM75-10-1, NO HELP. INSPECTED COMPRESSOR THROUGH 5TH AND 10TH STAGE BLEED VALVES AND FOUND COMPRESSOR WORN.SDR CA980311014Engine · failure(CAN) ON CLIMB OUT, NR 1 ENGINE LOST HORSE POWER, LOW TIT, NR 1 ZONE FIRE WARNING LIGHT CAME ON. FLIGHT CREW SHUT ENGINE DOWN AND AIRCRAFT RETURNED TO POINT OF ORIGIN. INITIAL INVESTIGATION REVEALED DEBRIS IN THE TAIL PIPE INDICATING A TURBINE FAILURE. ENGISDR CA980305004Spacer · blocked(CAN) DURING FLIGHT, THE NR 1 ENGINE OIL PRESSURE AND QUANTITY DECREASED, OIL PRESSURE LIGHT CAME ON. ENGINE SHUT DOWN. MAINTENANCE INVESTIGATION REVEALED THAT THE TIE BOLT SPACER WAS BLOCKED (COKED) CAUSING THE OIL TO VENT OUT OF THE BREATHER. SPACER CLEANED SDR RAAA98E8001Compressor · failedDURING GROUND START OPERATION WITH NR 3 ENG IN HIGH SPEED GROUND IDLE AND SUPPLYING BLEED AIR TO START NR 4 ENG FLT CREW REPORTED LOUD BANG WITH RAPID RPM AND TIT RISE NR 3 ENGINE. SHUTDOWN NR 3 ENG WITH EMERGENCY HANDLE. NO COWL PENETRATION OR 1ST STAGE FODSDR CA980311011Regulator · damaged(CAN) NR 2 PROPELLER INTERMITTENT OVERSPEED. GOVERNOR REPLACED TWICE. FEEDBACK SHAFT REPLACED. PITCH LOCK VALVE REPLACED. PINION REPLACED. REGULATOR REPLACED. PROBLEM SOLVED.SDR ZIAA98002Engine · failedCYYT - UPON APPROACH INTO CYYT, NR 1 ENIGNE RPM DECAYED TO ZERO, PULLED SHUTDOWN HANDLE. MAINTENANCE INSPECTION REVEALED NR 1 ENGINE APPEARS TO BE DE-COUPLED. AIRCRAFT THREE ENGINED FERRIED TO YIP, FOR NR 1 ENGINE REPLACEMENT. ENGINE WAS REPLACED ON 1-28-98SDR LR7A9802Engine · failedNR 2 ENGINE LOSS OF HP WITH UNCONTROLLABLE RISE IN TIT. ENGINE SHUTDOWN AT 1305Z.PROBABLE CAUSE: FODSDR LR7A9732Engine · failedSHUTDOWN NR 4 ENGINE AT 1451Z DUE TO LOW OIL PRESSURE. REMOVED AND REPLACED ENGINE AND PROP ASSEMBLIES PER ONE-120 AND ONE-115. OPS CHECKS GOOD PER ONE-113 AND ONE-112.SDR LR7A9733Engine · failedPROP BRAKE INEFFECTIVE ABOVE 200 KTS (NR4). REMOVED AND REPLACED ENGINE AND PROP ASSEMBLIES PER ONE-120 AND ONE-115 OPS CHECKS GOOD PER ONE-113 AND ONE-112. (SEE LR7A9732)SDR LR7A9731Engine · failedNR 1 ENGINE UNCONTROLLABLE LOSS IN OIL PRESSURE. SHUTDOWN ENGINE AT 0930Z. REPLACED NR 1 ENGINE PER ONE-120.SDR CA971216050Voltage Regulatr · failed(CAN) DURING CRUISE, RIGHT HAND DC GENERATOR WENT OFF-LINE AND COULD NOT BE RESET. MAINTENANCE INVESTIGATION REVEALED THAT VOLTAGE REGULATOR WAS REGULATING AT A HIGH VOLTAGE RATE AND COULD NOT BE ADJUSTED. THIS RESULTED IN NR 1 DC GENERATOR TAKING MOST OF THSDR LR7A9727Valve · failedNR 3 ENGINE SHUTDOWN ON TAKEOFF AT 1633Z DUE TO RAPID FLUCTUATIONS IN TIT AND ENGINE RPM. REMOVED AND REPLACED NR 3 SPEED SENSE VALVE IAW N75-02, OPS NORMAL.SDR LR7A9728Oil Pump · failedNR 1 ENG SHUTDOWN ON ROLL-OUT IN PANC DUE TO ZERO ENG OIL PRESSURE AT 2358. REMOVED AND REPLACED POWER SECTION PRESSURE AND SCANVANGE PUMP PER 72-2-1, OPS OK.SDR CA971021008Element · high resistance(CAN) DURING FLIGHT FIRE WARNING FOR NR1 ENGINE ZONE 2 CAME ON. PRECAUTIONARY SHUT DOWN OF NR1 ENGINE CARRIED OUT AND BOTH LEFT HAND FIRE BOTTLES DISCHARGED. SUBSEQUENT MAINTENANCE ACTION FOUND FIRE SENSE ELEMENT AT FAULT. ELEMENT AND DISCHARGED FIRE BOTTLES RSDR LR7A9723Engine · failedSHUTDOWN NR 1 ENG DUE TO ENG LOW OIL PRESSURE LIGHT ILLUMINATION AND LESS THAN 130 PSI REDUCTION GEAR IN FLIGHT AT 0715Z. REPLACED NR 1 ENGINE PER ONE120.SDR CA970916012Switch · failed(CAN) DURING CLIMB, LEFT ENGINE LOW PRESSURE ENGINE FUEL BOOST WARNING LIGHT CAME ON. AIRCRAFT RETURNED TO BASE. MAINTENANCE TROUBLE SHOOTING REVEALED THE FUEL PRESSURE SWITCH HAD FAILED. THE FAILED SWITCH WAS REPLACED.SDR CA970820001Bolt · broken(CAN) MAIN WHEEL ASSEMBLY TIE BOLT FAILED. ALL BOLTS REPLACED.SDR 97ZZZM894Turbine · failedNR 4 ENGINE WILL NOT SUSTAIN RPM ABOVE 7000 RPM. PREPARED AIRCRAFT FOR FERRY FLIGHT PER ZIAA MM GMM 04-07-01 BY INSTALLING FERRY KIT. BLADE FRAGMENTS FOUND IN TAIL PIPE. AIRCRAFT FERRIED TO ANC ON 7/18/97 DUE AKN RUNWAY CLOSURE. NR 4 ENGINE WAS CHANGED. ESDR LR7A9708RTurbine · failedNR 4 ENGINE WILL NOT SUSTAIN RPM ABOVE 7000 RPM. PREPARED AIRCRAFT FOR FERRY FLIGHT PER ZIA MAINTENANCE MANUAL GMM 04-07-01 BY INSTALLING FERRY KIT. FRAGMENTS FOUND IN TAIL PIPE. AIRCRAFT FERRIED TO ANC ON 7/18/97 DUE AKN RUNWAY CLOSURE. NR 4 ENGINE WAS CHSDR CA970618020Ac Generator · failed(CAN) DURING CRUISE, THE RIGHT HAND GENERATOR MECHANICAL FAIL LIGHT ILLUMINATED. THE ENGINE WAS SHUTDOWN AND PRECAUTIONARY LANDING WAS MADE. THE FAILED GENERATOR WAS REPLACED AND SYSTEM CHECKED SERVICEABLE.SDR CA970528027Bolt · broken(CAN) MAIN WHEEL TIE BOLT FAILURE WITH SUBSEQUENT MAIN WHEEL HALF AND BRAKE DAMAGE. WHEEL AND BRAKE REPLACED.SDR CA970310006Bearing · failed(CAN) NR 1 ENGINE SHUT DOWN AFTER LANDING DUE TO LOW OIL PRESSURE QUANTITY. MAINTENANCE FOUND THAT THE TURBINE SECTION REAR BEARING SCAVENGE PUMP WAS DAMAGED AND LEAKING. THE ENGINE TURBINE HAD SHIFTED BACK AND DAMAGED THE PUMP. IT IS SUSPECTED THE COMPRESSSDR CA970225004Fuel Contrl Unit · failed(CAN) ENGINE NR 1 WOULD NOT RESPOND TO POWER LEVER WHEN PULLED BACK. FUEL FLOW AND EGT REMAINED THE SAME. ENGINE SHUT DOWN ON APPROACH. FUEL CONTROL UNIT SUSPECTED OF INTERNAL FAILURE. REPLACED FUEL CONTROL UNIT.SDR ZIAA97010Linkage · looseHUF - DURING TAXI OUT, NR 1 POWER LEVER 1 INCH TO 1.5 INCH OF FREE TRAVEL. RETURNED TO THE RAMP. RETORQUED LINKAGE AT THE FUEL CONTROL. GROUND TEST NORMAL. (M)SDR CA970204002Annunciatr Panel · loose wire(CAN) LEFT HAND MAIN LANDING GEAR DID NOT INDICATE DOWN AND LOCKED. MAINTENANCE TROUBLESHOOTING REVEALED A LOOSE WIRE ON THE REAR OF THE LH LANDING GEAR DOWN (GREEN) LIGHT SOCKET. WIRE REPAIRED.SDR ZIAA96075Bearing Support · separatedFWA - NR 2 ENGINE FIRE WARNING ILLUMINATED ON CLIMB-OUT. PULLED EMERGENCY SHUT DOWN HANDLE AND DISCHARGED FIRE BOTTLE. RETURNED TO FWA. FOUND REAR TURBINE BEARING SUPPORT SEPARATED AT MOUNT POINT. NO FIRE PRESENT BUT HOT EXHAUST GASES SET OFF THE FIRE WARNSDR CA970109031Select Lever · seized(CAN) LH POWER LEVER FROZEN IN CLIMB OUT. ON LANDING THE LANDING GEAR LEVER WOULD NOT RELEASE TO DOWN POSITION AND REQUIRED THE USE OF THE EMERGENCY EXTENSION. ONCE LANDED MAINTENENACE CHECKED THE POWER LEVER AND RETRACTION SYSTEM AND BOTH OPERATED NORMALLY. LSDR CA961128024Clamp Band · worn(CAN) LEFT HAND ZONE 1 FIRE WARNING ILLUMINATED. ENGINE SECURED AND FIRE BOTTLES DISCHARGED. AIRCRAFT LANDED SAFELY. MAINTENANCE CHECK FOUND LEFT HAND EXHAUST PIPE UNIVERSAL COUPLING HAD SEPARATED ALLOWING EXHAUST GASES TO ENTER ENGINE NACELLE. COUPLING FAILEDSDR CA961114003Switch · failed(CAN) ON APPROACH RH MAIN LANDING GEAR DID NOT INDICATE DOWN AND LOCKED. EMERGENCY PROCEDURE LANDING CARRIED OUT. MAINTENANCE CHECK REVEALED DOWN LOCK SWITCH FAILED IN OPEN POSITION. WIRES ON DOWN LOCK SWITCH CONNECTED TO SPARE CONTACTS AND LANDING GEAR OPERATSDR CA961114002Wire · broken(CAN) ON APPROACH, NO DOWN LOCK INDICATION ON NOSE LANDING GEAR. EMERGENCY LANDING SAFELY CARRIED OUT. MAINTENANCE ACTION DISCOVERED BROKEN WIRE IN NLG CONDUIT BETWEEN SWITCH AND JUNCTION BOX. BROKEN WIRE REPAIRED AND LANDING OPERATION CHECKED SERVICEABLE.SDR RAAA96E8026Inlet Vane · separatedDURING SCHEDULED NR 1 CHECK, FOUND NR 1 ENGINE COMPRESSOR INLET VANE OUTER RING SEPARATED AT 9 O'CLOCK POSITION. REPLACED ENGINE.SDR RAAA96E4010Red Gearbox · high oil pressNR 3 ENGINE PRECAUTIONARY SHUTDOWN, AT 2026Z WHILE CLIMBING OUT OF ANC, DUE HIGH (244 PSI) REDUCTION GEARBOX OIL PRESSURE. RETURNED TO ANC. VERIFIED INDICATION SYSTEM. REPLACED RGB OIL PUMP ASSY. DID NOT CORRECT PROBLEM. SUSPECT RGB INTERNAL OIL SYSTEM RESDR CA960709008Elbow Fitting · broken(CAN) AFTER TAKEOFF DURING CLIMB AND FLAPS RETRACTED, ENGINE DRIVEN HYDRUALIC FAIL LIGHT ILLUMINATED. HYDRAULIC FLUID LEVEL INDICATED EMPTY. FLAPS EXTENDED USING D.C. PUMP AND LANDING GEAR EXTENDED USING EMERGENCY FREE FALL PROCEDURES. MAINTENANCE INVESTIGATIOSDR CA960627101Connector · corroded(CAN) AIRCRAFT WAS IN CRUISE FLIGHT WHEN #1 ENGINE FIRE WARNING SOUNDED. ENGINE WAS SHUT DOWN AND AIRCRAFT CONTINUED ON FLIGHT. MAINTENANCE COULD NOT DUPLICATE FAULT AT FIRST BUT WARNING SOUNDED WHEN CHECKING FIRE LOOP CONNECTOR. REPLACED CONNECTOR P/N 35100-6SDR CA960620001Compressor · fod damage(CAN)INVESTIGATION OF ENGINE COMPRESSOR REVEALED FOD DAMAGE. COMPRESSOR REPLACED AND AIRCRAFT RETURNED TO SERVICE.SDR ZIAA96015Bearing Support · crackedANC - DURING TAKEOFF FROM ADQ, HAD FIRE WARNING INDICATION ON NR 3 ENGINE. E-HANDLE PULLED AT 22.37Z. CREW ELECTED TO PROCEED TO ANC. FOUND NR 3 ENGINE REAR TURBINE BEARING SUPPORT COCKED AND CRACKED 75 PERCENT OF ITS CIRCUMFERENCE, THUS DIRECTING EXHAUST GSDR CA960502056Sense Loop · chafed(CAN) ON DESCENT THERE WAS A ZONE 2 FIRE INDICATION ON NUMBER TWO ENGINE. THE FIRE EXTINGUISHER WAS DISCHARGED AND THE ENGINE WAS SHUT DOWN. THE FIRE WARNING BELL DID NOT GO OUT. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REVEALED THAT THE FIRE SENSE LOSDR CA960502001Engine · lost power(CAN) DURING CLIMB THROUGH 18,000 FEET, A SMALL THUMP WAS HEARD (FELT). FOLLOWING THIS, #1 ENGINE HORSEPOWER DROPPED TO APPROXIMATELY 500 HP WITH MOMENTARY TIT OVERTEMP (1030 DEGREES). ALL OTHER PARAMETERS WERE NORMAL. CREW ELECTED TO KEEP ENGINE OPERATING. POSDR CA960409029Governor · fluctuates(CAN)DURING A FLIGHT TEST, COMING OFF FINAL APPROACH, THE RIGHT HAND PROPELLER STARTED FLUCTUATING BETWEEN 13300 AND 14400 RPM. THE R/H ENGINE WAS SHUT DOWN AND THE AIRCRAFT LANDED WITHOUT INCIDENT. THE PROPELLER WAS REMOVED AND SENT FOR INSPECITON/OVERHAUL.SDR CA960212023Torsion Arm · broken(CAN)DURING FLIGHT AT 16,000 FT. A LOUD THUMP WAS FELT & HEARD. ALL ENGINE PARAMETERS WERE NORMAL BUT CABIN ALTITUDE BEGAN TO CLIMB. AIRCRAFT DESCENDED TO 10,000 FT. CREW SELECTED LANDING GEAR DOWN BUT LEF T MAIN LANDING GEAR WOULD NOT EXTEND. AFTER SEVERAL ATSDR CA951127008Stringer · corroded(CAN)DURING INSPECTION PHASE A SLIGHT BULGE IN THE SKIN ON THE OUTBOARD ENGINE NACELLE AT STN 135.O TO 171.0, WATER LINE 0.0 TO 111.0 BETWEEN RIVETS WAS DETECTED. AN NDT X-RAY REVEALED SLIGHT CORRO SION IN THE AREA OF THE RIVETS AND EXTENSIVE CORROSION ON A STSDR CA951110007Coupling · misaligned(CAN)UNCOMMANDED SHUT-DOWN OF RH ENGINE OCCURRED WHILE IN LOW SPEED GROUND IDLE SUBSEQUENT MAINTENANCE INSPECTION REVEALED ALIGNMENT PINS WITHIN DISCONNECT FITTING COUPLING WERE FOUND TO BE OUT OF ALIGNMENT. FIREWALL WIGGINS FUEL COUPLING FITTING FOR ENGINE FUSDR RAAAE495026Bearing Support · separatedNR 2 ENGINE 'E' HANDLED WHILE CLIMBING OUT OF SDP DUE TO LOW OIL QUANTITY AND FLUCTUATING ENGINE AND RGB OIL PRESSURE. REPLACED ENGINE ASSY DUE REAR TURBINE BEARING SUPPORT OUTER CONE 95 PERCENT SEPARATED AT WELD .5 INCH AFT OF HUB ASSY. ALSO, HUB STRUTS CRACKSDR 95ZZZW672Garlock Seal · deterioratedON A REPOSITIONING FLIGHT FROM MCI TO AVW, THE LEFT ENGINE REDUCTION GEAR BOX OIL PRESSURE BEGAN TO FLUCTUATE FOLLOWED BY A LOW OIL PRESSURE WARNING LIGHT. THE LEFT OIL QUANTITY INDICATION DROPPED TO ZERO. THE ENGINE WAS SHUTDOWN AND THE AIRCRAFT DIVERTED TOSDR 95ZZZX1711Body · debondedOIL PUMP REPAIR MATERIAL DEBONDING. APPROXIMATELY .50 SQUARE INCH OF MATERIAL HAS LIFTED AWAY FROM GEAR POCKET WALL. SURROUNDING MATERIAL SHOWS EVIDENCE OF GENERAL DEBONDING. BODY IDENTIFIED WITH 'IAR 7148'.
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