Allison 250-C20B
Service difficulty reports · 1,981
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 = '250C20B' 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 = '250C20B' 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 CA060808009Strut · cracked(CAN) DURING THE YEARLY INSPECTION, THE LT AFT LANDING GEAR STRUT WAS INSPECTED AND FOUND TO BE CRACKED, FROM THE LOWER DRAG BRACE ATTACH HOLE. THE CRACK WAS APPROX. 1.250 INCH LONG, AND EXTENDED LENGTHWISE TOWARDS THE BEND IN THE STRUT (TC NR 20060808009)SDR KBM2006F00217Sump · sticksFUEL SUMP, UNIT STICKS OPEN, REMOVED AND REPLACED. (K)SDR KBM2006F00218Pressure Switch · inoperativeSWITCH INOPERATIVE, CAUTION LIGHT FOR FUEL PRESSURE, DID NOT ILLUMINATE WHEN AFT SWITCH IS IN OFF POSITION, REMOVED AND REPLACED. (K)SDR CA070227009Control Lever · stiff(CAN) LEVER CONTROL LEVER HARD TO MOVE ON A FUNCTIONAL CHECK. (TC NR 20070227009)SDR YTRR110066Governor · fluctuatesENGINE RPM DROOPS WITH POWER APPLICATION. REPLACED GOVERNOR.SDR 109061306Check Valve · brokenWHILE IN FOR A SCHEDULED INSPECTION, OUR TWIN ENGINE HELICOPTER EXPERIENCED A LOW POWER ENGINE PLOT ON NR 1 ENGINE. AN INTERESTING SIDE NOTE WAS THAT WITH BOTH ENGINES RUNNING, NORMAL TEMPERATURES APPEARED ON BOTH ENGINES AND NO POWER DEGRADATION WAS NOTED ONSDR YTRR110065Fuel Control · malfunctionedENGINE SURGES DURING ACCELLERATION. REPLACED FUEL CONTROLSDR KBM2006F00206Bushing · wornBLEED VALVE, VANE BUSHING WORN, HIGH OPERATIONAL TOT, REMOVED AND REPLACED (K)SDR CA060605005Skid · corroded(CAN) DURING A ROUTINE 300 HR INSP OF THE AC, IT WAS NOTED THAT A SMALL PIECE OF PAINT HAD FALLEN OFF OF THE LOWER AFT END OF THE TAIL SKID ASSY, AT THE LOWER WELD BEAD JOINT. UPON FURTHER INVESTIGATION, IT WAS NOTED THAT A SMALL HOLE (APPROX .1875) WAS PRESENSDR KBM2006F00216Scroll · crackedENGINE COMPRESSOR SCROLL FITTING FOR HEATER DEMISTER IS CRACKED. BLEED AIR SYSTEM, REMOVED AND REPLACED. (K)SDR CA060605006Web · cracked(CAN) DURING A ROUTINE 300 INSP ON THE AIRFRAME, A CRACK WAS NOTED ON UPPER AFT SECTION OF THE SEAT WEB ASSY. THIS AREA IS PRONE TO STRESS AND CRACKS WHEN THE SEAT PANEL (THAT IS ATTACHED TO IT) IS REMOVED, AND NO SUPPORT IS ADDED TO THE TOP OF THIS WEB ASSY. SDR CA060605008Longeron · cracked(CAN) DURING A ROUTINE 300 HR INSP, A CRACK WAS FOUND ON THE LONGERON ABOVE THE LT REAR PASSENGER DOOR, AT THE FWD ATTACHMENT TO THE ROLLOVER BULKHEAD. THE CRACK ORIGINATED AT THE ATTACHING RIVETS. THE LONGERON WAS REPLACED WITH A NEW PIECE, AND THE AIRCRAFT WSDR KBM2006F00215Coupling · unserviceableCOUPLING, UNIT INSERVICEABLE, REMOVED AND REPLACED. (K)SDR CA060606009Control Cable · broken(CAN) CABLE BROKE APPROXIMATELY 9.5 FROM END. (TC NR 20060606009)SDR HEEA109565Terminal · looseAFTER TAKEOFF THE NR 1 ENGINE OIL TEMPERATURE ROSE TO THE RED LINE, RETURNED TO GALVESTON AND LANDED WITHOUT INCIDENCE. MAINTENANCE CLEANED AND TIGHTENED TERMINAL END TO TEMP BULB.SDR CA060530001Transmission · making metalDURING CRUISE, MAIN ROTOR TRANSMISSION METAL PARTICLES LIGHT ILLUMINATE IN COCKPIT. LAND IMMEDIATELY IN SMALL CLEARING NEAR A ROAD. IT WAS A SECOND EVENT TO OCCUR WITHIN LAST 10 MINS, BUT FIRST TIME, WARNING LIGHT HAD EXTINGUISHED WHEN PILOT ACTIVATED PULSE SDR HEEA109563Engine · malfunctionedDURING TAKEOFF FROM VR245 THE NR 2 ENGINE BEGAN A LOUD POPPING NOISE AND THE NR 2 ENGINE TOT BEGAN INCREASING. RETURNED TO VR245 UNEVENTFULLY. MAINTENANCE FOUND THE ENGINE INTAKE WAS PARTIALLY BLOCKED BY A PLASTIC CAN LID. THE ENGINE WAS REPLACED.SDR HEEA109564Exhaust Stack · missingIN CRUISE FLIGHT, AIRCRAFT YAWED TO LEFT AND VIBRATION WAS FELT IN TAIL ROTOR PEDALS. AIRCRAFT WAS LANDED AT DESTINATION, AND PILOT DISCOVERED EXHAUST STACK FROM NR 1 ENGINE MISSING, AND DAMAGE TO BOTH TAIL ROTOR BLADES. MAINTENANCE FOUND THE NR 1 ENGINE OUSDR KBM2006F00214Pressure Switch · intermittentFUEL PRESSURE CAUTION LIGHT INTERMITTENT, REMOVED AND REPLACED. (K)SDR CA060509007Strut · cracked(CAN) WHILE DOING A 100 HOUR INSPECTION OF THE AIRCRAFT THE ENGINEER NOTICED SOME CRACKED PAINT ON THE BOTTOM SIDE OF THE STRUT EMINATING FROM THE LANDING GEAR BRACE BOLT HOLE. HE THEN REMOVED SOME OF THE PAINT AND REVEALED A CRACK 1.5 INCHES LONG GOING OUTWASDR KBM2006F00163Coupling · defectiveCOUPLING, UNIT HAS SHARP EDGES ON SPLINE, REMOVED AND REPLACED. (K)SDR KBM2006F00150Indicator · stuckTACH INDICATOR, NO INDICATION, NEEDLE STUCK, REMOVED AND REPLACED. (K)SDR KBM2006F00151Indicator · malfunctionedDUAL TACH, GAUGE LIGHT WILL NOT ILLUMINATE, REMOVED AND REPLACED. (K)SDR KBM2006F00152Indicator · faultyFUEL QUANTITY INDICATOR, LIGHTS WILL NOT ILLUMINATE, REMOVED AND REPLACED. (K)SDR KBM2006F00149Regulator · inoperativeAC BATTERY LOW POWER, REMOVED AND REPLACED. REGULATOR MALFUNCTIONED, REMOVED AND REPLACED. (K)SDR KBM2006F00148Drive Shaft · overtempMDS TEMP INDICATES IN FWD COUPLING, SHOW OVERTEMP CONDITION. DISASSEMBLED, CLEAN AND INSPECTED FOR OVERTEMP. NO DEFECT FOUND THIS TIME. REASSEMBLED WITH 8 INNER GREAT BOLT (PN NGS 660110, PO 2314)(4 NGS M8324811-235),( 2 EA 206-040-272-001)(4 EA MS210043-4)SDR CA060320004Data Plate · loose(CAN) GLUE ON DATA TAG DETERIORATED DUE TO CONTACT WITH FUEL AND WAS LOCATED AT BOTTOM OF FUEL TANK (TC NR 20060320004)SDR ALG2006F00029Vhf Comm · inoperativeDURING FLIGHT, VHF RADIO DISPLAY WENT BLACK AND WOULD NOT RECEIVE OR TRANSMIT. AC LANDED, MAINTENANCE REMOVED AND REPLACED VHF RADIO, FUNCTION CHECKED GOOD AND RETURNED TO SERVICE. (K)SDR CA060316007Manifold · malfunctionedDURING PILOT TRAINING AIRCRAFT COMPLETED A HYDRAULICS OFF LANDING. HYDRAULIC SWITCH WAS THEN TURNED BACK ON AND THE FORE AND AFT MOVEMENTS CAME BACK HOWEVER THE LATERAL MOVEMENTS DID NOT COME BACK TO NORMAL HYDRAULIC ON. AIRCRAFT WAS THEN SHUT DOWN AND HYDRASDR NYS2006F00000Freewheel Unit · misinstalledDURING DAILY INSPECTION OF AC NOTED FREEWHEEL ASSY NOT FUNCTIONING PROPERLY. IN PUT DRIVE SHAFT FROM NR 1 ENGINE WOULD NOT FREEWHEEL IN COUNTER CLOCKWISE DIRECTION. REMOVED FREEWHEEL ASSY AND INSPECTED CLUTCH. FOUND SPRAG TURNED SIDEWAYS. METAL CLIP WHICH SDR CA060313003Blades · inoperative(CAN) AFTER FLIGHT, PILOT REPORTED THAT THE T/R PEDALS WERE STIFF. PEDAL TENSION WAS CHECKED WITH THE AIRCRAFT RUNNING AND IN FLIGHT AND MEASURED AT 30 LBS TENSION. THE T/R BLADES WERE REPLACED BY SERVICEABLE UNITS AND PROBLEM DISAPPEARED, TENSION ON PEDALS RSDR KBM2006F00111Window · crackedCO PILOT WINDOW CRACKED, REMOVED AND REPLACED. (K)SDR KBM2006F00112Window · crackedWINDOW, RT CHIN BUBBLE WINDOW IS CRACKED. REMOVED AND REPLACED. (K)SDR CA060322009Belt · failed(CAN) DURING A 100 HOUR INSPECTION THE BLOWER BELT WAS NOTED AS HAVING SEVERAL TEETH MISSING. BELT IS IDENTIFED WITH THE PN IN WHITE MARKER. BELT TENSION WAS VERIFIED AFTER INSTALLATION AND NO DEFECTS WERE NOTED DURING THE NEXT 3-100 HOUR INSPECTIONS. NO VIBRASDR 2006FA0000491Coupling · failedHYDRAULIC PUMP TACH DRIVE COUPLING BRAZED WELDING FAILED CAUSING COUPLING TO BECOME LOOSE. MFG SHOULD CHECK THE STRENGTH OF BRAZE AFTER WELDING. WHEN THIS COUPLING FAILS, LOST OF ROTOR TACH OCCURS. (K)SDR KBM2006F00107Tach Generator · failedN2 READING WENT TO -0- IN A SHORT FINAL, REMOVED AND REPLACED TACH GENERATOR. (K)SDR KBM2006F00102Transponder · malfunctionedTRANSPONDER, UNIT INOPERATIVE. DOCS NOT INDICATE MODE C. REMOVED AND REPLACED. (K)SDR 2006FA0000231Fitting · fracturedAC LANDED FOR SHUTDOWN AFTER OPERATING FOR APPROX 3 FLIGHT HOURS, AC WAS SHAKING DURING SHUTDOWN. DURING POST FLIGHT INSP IT WAS FOUND THAT UPPER LT MOUNT HARD POINT PN 2050318211P ON TAILBOOM (PN 20503280071), WAS FRACTURED, HAD TORN THRU FWD TAILBOOM BLKHD SDR KBM2006F00085Bearing · wornTACH GENERATOR, BAD BEARINGS, REMOVED AND REPLACED. (K)SDR CA060208006Scroll · cracked(CAN) ON INSPECTION THE ENGINEER WAS TAKING APART THE ANTI-ICE BODY 6856984 FOR INSPECTION AND FOUND A CRACK AROUND THE BOSS. (TC NR 20060208006)SDR CA060216002Caliper · binding(CAN) PISTON DOES NOT RETRACT INTO CALIPER HOUSING AFTER BRAKING CAUSING ROTOR BRAKE PAD TO REMAIN IN CONTACT WITH BRAKE DISC. (TC NR 20060216002)SDR KBM2006F00045Unknown · unknownENGINE OIL PRESSURE AND TORQUE GAUGE FLUCTUATED AND DROPPED TO ZERO, REMOVED AND REPLACED. (K)SDR ALG2006F00012Tachometer · inoperativeIN FLIGHT NR INDICATOR DROPPED TO 20 PERCENT. REMOVED ROTOR TACHOMETER AND REPLACED WITH SERVICEABLE UNIT. WORK ACCOMPLISHED IAW MM. (K)SDR KBM2006F00046Valve · leakingVALVE ASSY, UNIT LEAKING, REMOVED AND REPLACED. (K)SDR KBM2006F00047Pump · low pressureBOOST PUMP LOW PRESSURE, REMOVED AND REPLACED. (K)SDR KBM2006F00049Radio · malfunctionedVHF RADIO, WHEN MIC IS KEYED THE LIGHTS DIM, REMOVED AND REPLACED. (K)SDR CA060112001Combustion Case · crackedCREW REPORTED ABNORMALLY HIGH TOT ON NR 1 ENGINE. INVESTIGATION REVEALED A CRACK IN THE RT ARMPIT AREA OF THE OUTER COMBUSTION CASE. THE OUTER COMBUSTION CASE WAS REPLACED AND THE AIRCRAFT RETURNED TO SERVICE.SDR KBM2006F00048Indicator · inoperativeBOWL INDICATOR ASSY, UNITS INDICATOR POPS AT RANDOM. REMOVED AND REPLACED. (K)SDR KBM2006F00007Isolation Mount · inoperativeAIRCRAFT HAS VERTICAL VIBE DURING OUTOFF GROUND HOVER, ISOLATION MOUNT REMOVED AND REPLACED. (K)SDR KBM2006F00008Seat Belt · brokenSEAT BELT BROKEN, REMOVED AND REPLACED. (K)
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