Allison 250-C47B
Service difficulty reports · 1,403
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 = '250C47B' 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 = '250C47B' 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 CA011119004Blade · cracked(CAN) DURING AIRFRAME PERIODIC INSP 3.5 INCH DIAGNAL CRACK ON LOWER SKIN OF SUBJECT BLADE FOUND AT BLADE STATION 71.0-73.0.ATTEMPTS TO DRESS OUT CRACK WITH LIGHT SANDING REVEALED SUSPECT LACK OF FIBERGLASS MATTING USED IN CONSTRUCTION OF BLADE TYPE. EVIDENCED SDR HEEA076897Bleed Valve · failedLOW POWER ENGINE. IN SHOP REPAIR.SDR 2001FA0000488Bolt · brokenDURING PREFLIGHT PILOT FOUND TAILBOOM BOLT MOVED. MAINTENANCE REMOVED COVER FOUND BOLT SAFETIED, BUT BROKEN 2.5 THREADS FROM SHANK BOLT REMOVED AND REINSTALLED 265.2 HOURS BEFORE.SDR ALG2002F00002Pitch Horn · corrodedAFTER DISASSEMBLY, CLEANING AND STRIPPING PAINT FOR OVERHAUL. CORROSION ON ENTIRE SURFACE BEYOND LIMITS DUE TO POOR METAL QUALITY AND POOR PRIME AND PAINT. BETTER QUALITY ALUMINUM AND PAINTING PROCEDURES RECOMMENDED.SDR R7MR34253Valve · leakingVALVE, UNIT INOPERATIVE. FAILS TO STOP FLOW OF HYDRAULIC PRESSURE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.(K)SDR R7MR34290Search Light · malfunctionedSEARCH LIGHT ASSEMBLY, UNIT INOPERATIVE. UNIT WILL ONLY EXTEND AND RETRACT, WILL NOT ROTATE LEFT OR RIGHT. LIGHT IS STUCK SLIGHTLY TO THE RIGHT OF CENTER. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.(K)SDR R7MA33894Gyro · precessesUNIT INOPERATIVE. PRECESES. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR ALG2001F00036Ring · corrodedDURING PHASE INSPECTION. CORROSION BEYOND MAXIMUM LIMITS.SDR ALG2001F00043Link · corrodedDURING PHASE INSPECTION. CORROSION BEYOND MAXIMUM LIMITS. RETURN TO 206 SERIES ALLOY USED ON LINKS AND LEVERS. BETTER ALLOY AND/OR SURFACE PROTECTION.SDR ALG2001F00045Frame · crackedDAILY INSPECTION, CRACKED DOUBLER AND FRAME AT RIGHT HAND NUT PLATE TAB.SDR ALG2001F00039Disc Pack · crackedDURING 25 HOUR AD INSPECTION, FOUND TAIL ROTOR DRIVESHAFT DISC CRACKED.SDR R7MR34252Indicator · inoperativeINDICATOR, MGT, UNIT INOPERATIVE. BAD MEMORY WILL NOT HOLD EXCEEDANCES. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR AUS20011060Vane · cracked(AUS) COMPRESSOR SCROLL ASSEMBLY RT TURNING VANE CRACKED. A PIECE OF THE VANE APPROXIMATELY 38.1MM BY 17.78MM (1.5IN BY 0.7IN) WAS MISSING. A SMALL PIECE OF THE LT VANE ALSO APPEARS TO BE MISSING.SDR 2001FA0000536Exciter · failedENGINE FAILED TO START. IGNITORS WERE NOT HEARD AS NORMALLY HEARD. IGNITOR WAS REPLACED WITH NEGATIVE RESULTS. IGNITION EXCITOR REPLACED WITH NEW, RESOLVING DESCREPANCY.SDR HEEA076388Valve · stuckVALVE STICKING. REPLACED WITH SERVICEABLE VALVE.SDR ALG2001F00037Bearing · delaminatedON DAILY INSPECTION, DELAMINATED ELASTOMER ON BEARING.SDR ALG2001F00041Bearing · failedUPON DISASSEMBLY OF GEARBOX DUE TO CHIP LIGHT. NR 4 BEARING FAILURE. TOOTH MISSING FROM GEAR ON PINION GEAR, AND DAMAGED GEAR TEETH ON T/M GEAR.SDR ALG2001F00044Disc Pack · crackedDAILY INSPECTION OF TAILROTOR HANGER BEARINGS. CRACKED DISC NR5 AND NR6 TAILROTOR HANGER BEARINGS. ALLOW THE TAILROTOR DRIVESHAFT TO FLOAT SO DISC PACKS DO NOT FLEX AS MUCH OR AS OFTEN.SDR HEEA076324Bleed Valve · failedHIGH MGT. REPLACED WITH SERVICEABLE BLEED VALVE.SDR HEEA076325Harness · failedFADEC DEGRADE LIGHT ILLUMINATED ON SHUTDOWN.SDR HEEA076326Harness · failedCONSTANT FADEC DEGRADE LIGHT. TO BE SENT TO VENDOR FOR CREDIT.SDR HEEA076327Harness · failedFADEC DEGRADE LIGHT. TO BE SENT TO VENDOR FOR CREDIT.SDR HEEA076328Harness · failedSHORT BETWEEN PIN D & C OF TORQUE TRANSMITTER CONNECTOR. TO BE SENT TO VENDOR FOR CREDIT.SDR HEEA076329Ecu · malfunctionedCONTINUES TO HAVE NPOS & OS FAULTS. TO BE SENT TO VENDOR FOR REPAIR.SDR ALG2002F00017Bearing · making metalMETAL WAS FOUND ON CHIP PLUGS, ENGINE AND GEARBOX DISASSEMBLED FOR INSPECTION. FOUND CAUSE FOR METAL DUE TO INNER RACE GALLING ON T/M JOURNAL BEARING, CAUSING METAL CONTAMINATION THROUGHOUT GEARBOX.SDR ALG2001F00046Wheel · corrodedDURING INSPECTION FOR METAL IN OIL, SULFIDATION ON BLADES. ENSURE PROPER COATING APPLIED.SDR ALG2001F00038Bearing · failedBEARING FAILED, COMPLIED WITH ASB 407-01-44.SDR 2001FA0000450Blade · debondedFOUND OVAL SHAPED AREA ON OUTSIDE OF TAIL ROTOR BLADE DEBONDED. 11 INCHES FROM BLADE ROOT TO 17 INCHES FROM BLADE ROOT. 1 INCH FROM TRAILING EDGE TO 3 INCHES FROM TRAILING EDGE OF BLADE.SDR R7MR34250Blower · inoperativeBLOWER ASSEMBLY, UNIT INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR R7MA33721Valve · stuckSTUCK IN OPEN POSITION. REPLACED WITH NEW UNIT CORRECTED PROBLEM.SDR R7MA33732Gps · inoperativeWILL NOT TRANSMITT, BUT WILL RECEIVE. REPLACED WITH LOANER UNIT CORRECTED PROBLEM.SDR ALG2001F00018Bearing · damagedTAILROTOR DRIVESHAFT BEARINGS, DURING DAILY INSPECTION, GREY GREASE FROM BEARINGS.SDR CA010913001Trim Tab · debonded(CAN) DURING SCHEDULED AIRFRAME PERIODIC INSP TRIM TAB ON PARTICULAR MAIN ROTOR BLADE FOUND TO HAVE SEVERE DEBONDING WHICH INITIALLY SHOWED UP AS CRACKS IN FILLER MATERIAL AROUND TRIM TAB EDGES. CLOSER INSP REVEALED SEVERE DEBONDING & COMPROMISE OF TRIM TAB ATSDR R7MA33660Gps · inoperativeUNIT INOPERATIVE. SKIPS PAGE 3. UPDATE WITH MOST RECENT SOFTWARE PATCHES. REPLACED WITH NEW UNIT CORRECTED PROBLEM.SDR R7MA33662Gyro · intermittentUNIT OPERATES INTERMITTENTLY. REPLACED WITH NEW UNIT CORRECTED PROBLEM.SDR R7MA36679Valve · damagedTHREADS NOT TREATED WITH LOCK-TITE PRIOR TO RE INSTALLATION INTO THE OUTER COMBUSTION CASE, WHICH RESULTED IN THREAD DAMAGE TO THE CASE ITSELF. THE REMOVED VALVE WAS LOST IN SHIPPING. REPLACED WITH NEW UNIT CORRECTED PROBLEM.SDR R7MA33684Combust Chamber · damagedBURNER DRAW VALVE WAS NOT COATED WITH ANTI-SEIZE FROM THE FACTORY. DURING REMOVAL OF THE VALVE, THREAD DAMAGE OCCURRED. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR R7MA33681Bleed Valve · leakingLEAKING AIR BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR 2001F00574Turbine Wheel · corrodedTURBINE RECEIVED FROM FIELD FOR HOWLING NOISE. REMOVED COMBUSTION SECTION AND FOUND SULFADATION ON 1ST STAGE WHEEL. THIS TURBINE HAD A ROLLS ROYCE COMBUSTION LINER. WHEEL HAS MISSING AND BROKEN BLADES DUE TO SULFADATION. (M)SDR 2001F00578Blade · missingTURBINE RECEIVED FROM FIELD FOR HOWLING NOISE. REMOVED COMBUSTION SECTION AND FOUND SULFADATION ON 1ST STAGE WHEEL. WHEEL HAS MISSING AND BROKEN BLADES DUE TO SULPHADATION. (M)SDR CA010726027Bearing · noisy(CAN) AFTER NORMAL UNEVENTFUL FLT, PILOT SHUTDOWN A/C&NOTICED NOISE COMING FROM TAIL ROTOR DRIVE TRAINN DURING COAST DOWN. SUBSEQUENT INSP REVEALED THATT HE GREASE EMANATING FROM AFT FAN SHAFT BEARING BLACK WITH METALLICPARTICLES, BEARING ROUGH WHEN ROTATED USSDR R7MR34249Blower · overheatedBLOWER ASSEMBLY, OVER HEATS CAUSING CIRCUIT BREAKER TO POP. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR CA010726028Bearing · disintegrated(CAN) SHORTLY AFTER TAKEOFF, ABOUT 400 FT ABOVE GROUND, A/C SOUND & VIBRATION LEVELS SUDDENLY CHANGED FROM NORMAL TO HEAVY VIBRATION THROUGHOUT WHOLE A/C WITH OSCILLATING, DRONING NOSIE. AS WELL, PILOT NOTICED PULSING FEEDBACK SE NSATION FROM ANTITORQUE PEDALSSDR B1HR719229Yoke · out of toleranceDURING REPAIR OF TAIL ROTOR YOKE, BEARING BORES WERE FOUND TO BE OUT OF ACCEPTABLE LIMITS. YOKE WAS REMOVED AND REPLACED.SDR R7MA37722Fan · wornWORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR R7MA33725Bearing · wornWORN BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR HEEA073534Filter Housing · malfunctionedOIL FILTER BOWL BYPASS BUTTON POPS CONTINUOUSLY. REPLACED WITH SERVICEABLE PART.SDR HEEA073537Hmu · noisyLOUD HUMMING NOISE IN ENGINE COMPARTMENT WITH BOOST PUMPS ON. REPLACED WITH SERVICEABLE PART.SDR HEEA073727Igniter Box · intermittentWORKS INTERMITTENTLY. AIRCRAFT WOULD NOT LIGHT OFF. TO BE RETURNED TO VENDOR.SDR HEEA073751Igniter · erodedELECTRODE ERODED CAUSING DELAYED LIGHT OFF. SCRAPPED AND REPLACED WITH SERVICEABLE PART.
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