JASC 6123
Service difficulty reports · 919
Reports filed under 6123 · Propeller Feathering/Reversing, newest first.
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 jasc_code = '6123' 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 jasc_code = '6123' 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 2016FA0000371Accumulator · failedWHILE INSTRUCTOR PILOT PERFORMED EMERGENCY PROCEDURE TRAINING, SHUT DOWN AND SECURED THE LEFT ENGINE. UPON ATTEMPTING TO RESTART THE ENGINE, THE LEFT PROPELLER WOULD NOT UN-FEATHER. LANDED WITHOUT INCIDENT. MAINTENANCE CREWS DISCOVERED THE LEFT PROPELLER UNFEASDR HNAA2016062800199Switch · dirtyAPPLIED T/O POWER AND AUTOFEATHER WOULD NOT ARM, ACFT RETURN TO GATE. INSPECTED WIRING, CLEANED AND INSPECTED SWITCHES 6121-S6 AND 6121-S7. OPS CHECKS GOOD IAW ENGINE RIGGING MANUAL.SDR HNAA2016062000191Unknown · malfunctionedDURING TAKEOFF ROLL, AUTO FX WOULD NOT ARM AUTOFEATHER SYSTEM. REPLACED RELAY 6121-K5 AS PRECAUTIONARY MEASURE, OPS CK GOOD AT THIS TIME, REF 61-26-00.SDR HNAA2016061300174Autofeather Sys · malfunctionedREJECTED TAKEOFF FOR AUTOFEATHER FAILING TO ARM ON TAKEOFF ROLL AND TAKEOFF WARNING HORN ALSO SOUNDED. NO ASSOCIATED CAUTION LIGHTS ILLUMINATED WITH WARNING HORN, CAPTAIN WAS CONFUSED ABOUT HISTORY. PERFORMED HI SPEED TAXI, DURING TAKEOFF CONFIGURATION ARMEDSDR GLBA2016042500583Pcb · faultyPILOT REPORTED THAT THE AUTOFEATHER ARMED WITH N1 ABOUT 95%, AFX DISABLE ILLUMINATED & RT AUTOFEATHER FAILED TO ARM. REPLACED PCB A123, PN ON & OFF 129-364091-9, SN OFF 446C95, SN ON 925I94, IAW AIM 10-24-01. VERIFIED RIGGING OF ARMING SWITCHES IAW MM 61-21-SDR GLBA2016042500582Unknown · malfunctionedPILOT REPORTED THAT AFTER TAKEOFF, POWER WAS APPLIED, AFX DISABLE ANNUNCIATOR ILLUMINATED & RT AUTOFEATHER DISARMED, THEN REARMED. THEN AFTER ROTATION, RT AUTOFEATHER DISARMED. ON CLIMB OUT SYS REARMED FOR THE REMAINDER OF THE FLIGHT. SUPPLEMENTAL INFORMATISDR GLBA2016041400580Unknown · malfunctionedPILOT REPORTED THAT THEY HAD UNSCHEDULED AUTOFEATHER CYCLING ON FINAL. PERFORMED AUTOFEATHER OPERATIONAL CHECKS & COULD NOT DUPLICATE DISCREPANCY SIGNED OFF USING REF 1900DMM 61-21-00. OPERATIONS CHECKED GOOD.SDR GLBA2016040800579Autofeather Sys · unknownPILOT REPORTED THAT THE LT ENG AUTO FEATHER CYCLED SEVERAL TIMES ON APPROACH. COMPLIED WITH FCD 1900-08-61-01, NO DEFECTS NOTED.SDR HNAA2016040500095Control Unit · malfunctionedAUTOFEATHER ARM LIGHT ILLUMINATED ON T/O WITH SWITCH SELECTED OFF. R & R NR 1 AND NR 2 TSCU.SDR QXEA2016032800224Control Unit · malfunctionedAUTOFEATHER FAILED TO ARM. ABORTED TAKEOFF N60 KNOTS; NORMAL BRAKING USED. TAKEOFF POWER WAS SET BY 20 KNOTS. NOTE: ON ENGINE SHUTDOWN NR 1 SHOWED NR 1 ENGINE FAILED THE AUTOFEATHER TEST WHILE NR 2 ENGINE PASSED. INTERROGATED CDS & FOUND FAULT CODES 494A SDR VGCA20160304001Speed Switch · unknownUNCOMMANDED AUTO FEATHER CAUSING THE NR 1 ENG TO SHUT DOWN, RETURN LANDING.SDR QXEA2016022900155Autofeather Sys · malfunctionedAUTOFEATHER SYSTEM FAILS DAILY CHECK. C/W TEST IAW AMM 61-20-00-710-801. TESTS GOOD. COULD NOT DUPLICATE. RETURNED TO SERVICE.SDR CA160302003Autofeather Sys · malfunctioned(CAN) UN-COMMANDED AUTO-FEATHER OCCURRED DURING INITIAL CLIMB. ENGINE WAS SUBSEQUENTLY SHUT DOWN AND AIRCRAFT RETURNED TO POINT OF ORIGIN, WHERE A SAFE LANDING WAS ACCOMPLISHED, CUSTOMER ENGINEERING REQUESTED THE TSCU FOR FURTHER INVESTIGATION.SDR HNAA2016012900026Autofeather Sys · malfunctionedAUTOFEATHER WILL NOT ARM ON TAKEOFF ROLL. AUTO FEATHER SELECT SWITCH WENT BLANK. K5 CIRCUIT BREAKER TRIPPED. RESET CIRCUIT BREAKER K5 ENGINE TORQUE CONDITION. CLEANED CONNECTOR ON NR 2 ENGINE TSCU. GROUND RAN ACFT. AUTOFEATHER TEST FAILED. NO FIX. SLAVED SDR HNAA2016012700022Control Unit · malfunctionedAUTOFEATHER WOULD NOT ARM DURING TAKEOFF ROLL. R & R NR 2 TSCU. RAN AIRCRAFT. OPS CHECKED GOOD IAW MM 72-01-10.SDR 7UVR2016FA0000041Accumulator · malfunctionedDURING TRAINING FLIGHT, THE PILOTS INTENTIONALLY SHUTDOWN THE LT ENGINE AND WENT TO RESTART WHEN PROPELLER WOULD NOT UNFEATHER IN FLIGHT. THE ACFT LANDED SAFE WITH 1 ENGINE. MAINTENANCE TROUBLESHOT THE PROP/UNFEATHER SYS. FOUND THAT THE UNFEATHERING ACCUMULSDR QXEA2016010900018Autofeather Sys · malfunctionedNR 1 ENGINE FAILS DAILY AUTOFEATHER CHECK. CYCLED ACFT POWER OFF/ON. PERFORMED A/F TEST. NR 1, AND 2 A/F TEST SHOWED PASSED. NO FURTHER DEFECTS NOTED.SDR QXEA2016010800017Autofeather Sys · malfunctionedNR 1 ENGINE FAILS DAILY AUTOFEATHER CHECK. FOUND FAULT CODES 400 IN CDS. NR 1 PEC, C/W FIM TASK 61-20-09-810-806. CLEARED ALL FAULTS AND C/W PROP AUTOFEATHER AND UPTRIM OPS CHECK REF AMM TASK 61-20-00-710-801, ALL TESTS PASSED AND FAULT CODES REMAINED CLEASDR TIMA20160108001Pressure Switch · faultyIMMEDIATELY AFTER ROTATION THE LT PROPELLER AUTO FEATHERED. PILOT REDUCED POWER & IMMEDIATELY LANDED, ABORTING THE TAKEOFF. THE PROBLEM WAS DISCOVERED TO BE A FAULTY AUTO FEATHER LOW PRESS SWITCH.SDR CA160119018Autofeather Sys · malfunctioned(CAN) THERE WAS AN ABORTED TAKEOFF DUE TO A NR 1 ENGINE AUTO-FEATHER FAILED TO ARM. THE HIGH PRESSURE COMPRESSOR SPEED DROPPED BUT THE PROPELLER DID NOT FEATHER. DURING TROUBLESHOOTING, THE AUTO-FEATHER DID NOT ARM. THE NR 1 ENGINE TORQUE SIGNAL CONDITIONER UNSDR HNAA2015123000377Selector Switch · inoperativeDURING AUTOFEATHER TEST, NR 2 PROP WILL NOT FEATHER. RPM DROPS FROM 650 TO 590. ALL OTHER PARAMETERS OK. R & R RELAYS 6121-K4, K2 AND K10. SLAVED IN NR 2 TSEU, NO FIX. ORIGINAL TSEU REINSTALLED. R & R NR 2 PCU IAW 61-10-10R. NO FIX. R & R AUTOFEATHER SELSDR CA151229007Autofeather Sys · malfunctioned(CAN) THE FLIGHT CREW HAVE REPORTED 3 EVENTS OVER THREE WEEKS OF AUTO-FEATHER (AF) FAIL TO ARM INDICATIONS DURING TAKE-OFF AND HAVE REJECTED THE TAKE-OFFS AS A RESULT. AIRCRAFT OPERATED ON MINIMUM EQUIPMENT LIST (MEL) WITH RESTRICTIONS TO ALLOW RETURN TO MAIN SDR DATA2015122101Circuit Breaker · malfunctionedAFTER BEING CLEARED FOR TAKEOFF & APPLYING TAKEOFF POWER, FIRST OFFICER NOTICED, AUTO FEATHER, LIGHT FAILED TO ILLUMINATE & CALLED ABORT. ACFT PULLED OFF ACTIVE RUNWAY & PARKED ON TAXIWAY WHERE IT WAS FOUND THAT AUTO FEATHER CIRCUIT BREAKER WAS TRIPPED. CIRCSDR QXEA2015120400640Autofeather Sys · failedAUTO-FEATHER FAILED TO ARM WITH POWER LEVERS IN RATING DETENT. ABORTED TAKEOFF. PERFORMED OPS CHECK OF THE AUTOFEATHER SYSTEM IN MAINTENANCE MODE WITH ENGINES RUNNING AND ON DC GROUND PWR IAW AMM TASK 61-20-00-710-805. SYS OPERATES NORMALLY WITH NO DEFECTS NOSDR CA151117017Autofeather Sys · malfunctioned(CAN) WHILE CRUISING AT FL160, THE LT ENGINE POWER ROLLED BACK AND SELF-RECOVERED 10 SECONDS LATER. THE FLIGHT CONTINUED TO DESTINATION WHERE IT LANDED UNEVENTFULLY. TROUBLESHOOTING LED TO THE REPLACEMENT OF THE AUTO FEATHER UNIT, AFU, BEFORE THE ACFT WAS RETSDR CA160301006Propeller · malfunctioned(CAN) DURING TAKE-OFF ROLL THE NR 1 ENGINE ATTEMPTED TO AUTO FEATHER. THE TAKE-OFF WAS ABORTED. THE FLIGHT CREW DID AN AUTO FEATHER TEST AND THE NR 1 ENGINE SEEMED TO WANT TO FEATHER IMMEDIATELY. THE NR 2 TORQUE SIGNAL CONDITIONER UNIT WAS REPLACED AND THE AIRSDR QXEA2015101400535Fault Code · false activationAUTOFEATHER TEST FAIL MESSAGE FOR NR 2 ENGINE. FOUND LT PROP CODES 494A, 402, 408, 494 ON THE "B" CHANNEL. CLEARED CODES IAW FIM 61-41-00-810-807. NO FAULTS AFTER. TEST PERFORMS FINE. RETURNED TO SERVICE. NO PARTS REPLACED.SDR CA151007009Autofeather Sys · malfunctioned(CAN) AN UNCOMMANDED AUTOFEATHER EVENT TOOK PLACE ON THE RT ENGINE DURING APPROACH. DURING DESCENT PRIOR TO THE UNCOMMANDED AUTOFEATHER, HEAVY VIBRATIONS WERE OBSERVED. AFTER TROUBLESHOOTING THE AUTOFEATHER UNIT WAS REPLACED.SDR GLBA2015091100536Autofeather Sys · unknownSIG EVENT, PILOT REPORTED THAT THE LT PROP AUTO FEATHERED WHEN INTRODUCING POWER FROM FLIGHT IDLE. TESTED AUTO FEATHER SYS SEVERAL TIMES IAW MM 61-21-00, SYS OPERATED NORMAL.SDR QXEA2015090600450Autofeather Sys · failedAUTOFEATHER FAILED TO ARM ON TAKEOFF ROLL. ABORTED TAKEOFF. PERFORMED CHECK OF CDS FOR FAULT CODES. NO RELATED FAULT CODES FOUND. PERFORMED OPS TEST OF PROP AUTOFEATHER AND UPTRIM SYS, REF Q-400 MCN NR-661292-001, 3 TIMES, ONCE WITH ENGINE SHUTDOWN AND TWISDR QXEA2015073100411Autofeather Sys · failedABORTED TAKEOFF AT 40 KNOTS FOR AUTOFEATHER FAILING TO ARM. THERE WAS A SWITCH LOG ISSUE. CREW RESET AND DEPARTED NORMALLY.SDR CA150630009Switch · failed(CAN) NR 1 ENG FAILS TO AUTO FEATHER. THRUST SENSITIVE SWITCH FOUND TO BE FAILED OPEN. SWITCH REPLACED & GND FUNCTION CHECKED OK.SDR QXEA2015062100340Switch · stickingNR 1 UNFEATHER SWITCH STICKS IN THE ON POSITION. REPLACED SWITCH IAW AMM TASK 20-30-07-400-801 AND WIRING MANUAL 45-45-00, SHEET 5 OF 5. OPS TESTS GOOD. RETURNED TO SERVICE.SDR HNAA2015051300159Autofeather Sys · malfunctionedDURING TAKEOFF ROLL, AUTOFEATHER WOULD NOT ARM. REJECTED TAKEOFF. POWER DOWN, POWER UP ACFT. CREW CYCLED POWER LEVERS THROUGHOUT RANGE AND GROUND RAN ACFT. AUTOFEATHER SYSTEM, OPS CHECKED NORMAL.SDR QXEA2015051100239Autofeather Sys · malfunctionedAT 80 KNOTS ABOUTED TAKEOFF FOR AUTOFEATHER NOT ARMING. RETURNED TO GATE. INTERROGATED CDS, FOUND FAULT CODES 494 A & B, AND 420 B. CLEARED FAULT CODES AND C/W FIM TASKS 61-20-09-810-810 AND 61-20-10-810-826. OPS CHECK PASS, FAULT CODES DO NOT RETURN. RETURNEDSDR CA150512002Autofeather Sys · failed(CAN) ENGINE NR 2 OVER TORQUED IN FLIGHT & NP WAS HIGH AT APPROX 92%. AS A PRECAUTION, ENG %2 WAS SHUTDOWN IN FLIGHT. THE OVER TORQUE WAS BEYOND 70 PSI FOR AT LEAST 1 MINUTE. NR 2 ENG WAS FEATHERED AT HIGH TORQUE VALUE. OVER TORQUE INSPECTIONS HAVE BEEN COSDR HNAA2015042700140Relay · inoperativeAUTOFEATHER WILL NOT ARM ON TAKEOFF ROLL. R & R RELAY 6121-K5. GROUND RAN ACFT IAW MAINTENANCE RUN UP MANUAL. OPS CHECKED GOOD. OK FOR SERVICE.SDR HNAA2015042700139Autofeather Sys · malfunctionedAUTOFEATHER DID NOT ARM DURING TAKEOFF ROLL. POWER DOWN AND POWER UP. OPS CHECKED GOOD ON MAINTENANCE ENGINE RUN.SDR O2GA2015032980401Pressure Switch · faultyAUTO PROP FEATHER TEST FAIL RT & LT ENGS. LT PROP LINGERS BETWEEN 670 & 680 RPM, TORQUE BETWEEN 13.5 & 16.1. RT PROP LINGERS BETWEEN 670 & 690 RPM, TORQUE BETWEEN 12.9 & 15.2. TROUBLE SHOT THE DISCREPANCY & FOUND A FAULTY LT & RT ENG AUTO FEATHER OIL PRESS SDR CA150331012Autofeather Sys · malfunctioned(CAN) DURING FLIGHT NR 2 PROPELLER EXPERIENCED UNCOMMANDED FEATHER. THE CREW SHUTDOWN THE ENGINE AND DECLARED AN EMERGENCY. NR 2 MULTI-FUNCTION COMPUTER AND AUTOFEATHER UNIT WERE REPLACED AND SENT TO ATR MFG FOR ANALYSIS. ENGINE TORQUE SENSORS ALSO REPLACEDSDR CA150324012Tube · dislodged(CAN) THE PILOT OF THE ACFT ABORTED TAKEOFF WHEN HE RECEIVED AN OVERTORQUE INDICATION FROM THE RT ENGINE. WHILE TAXIING BACK TO THE TERMINAL, THE PILOT TRIED TO UNFEATHER THE RT PROPELLER WITHOUT SUCCESS. THE PILOT REPORTED THE DEFECT IN THE ACFT JOURNEY LOGSDR CA150318016Pressure Switch · failed(CAN) AFTER ACFT HAD DOCKED, MAINTENANCE NOTICED AN OIL LEAK FROM THE NR 1 ENGINE COWLING. UPON INVESTIGATION IT WAS FOUND THAT THE SOURCE OF THE OIL LEAK WAS THE AUTOFEATHER TORQUE PRESSURE SWITCH. THE SWITCH WAS REPLACED AND A FUNCTION CHECK OF THE SYS CARRSDR HNAA2015030900078Warning Light · false activationAFTER TAKEOFF AND AUTOFEATHER DISENGAGED. ARM LIGHT REMAINED ILLUMINATED UNTIL DESCENT AND POWER REDUCED, ARM LIGHT EXTINGUISHED. CYCLED SWITCH SEVERAL TIMES. STATIC CHECK AND GROUND RAN ACFT. OPS CHECKED GOOD AT THIS TIME.SDR CA150306010Autofeather Sys · malfunctioned(CAN) THE AUTOMATIC TAKEOFF POWER CONFIGURATION SYSTEM, ATPCS, DID NOT ARM DURING LINING UP PRIOR TO TAKE OFF. THE TAKEOFF ROLL WAS ABORTED & THE AIRCRAFT RETURNED TO GATE. CUSTOMER INITIALLY ELECTED FOR MINIMUM EQUIPMENT LIST DISPATCHED UNDER ATPCS INOPERATSDR CA150226002Autofeather Sys · malfunctioned(CAN) DURING TAKEOFF, THE CREW OBSERVED THAT THE AUTO FEATHER SYS DISARMED. THE CREW ELECTED TO ABORT THE TAKEOFF AT LESS THAN 60 KTS INDICATED AIRSPEED.SDR QXEA2015022400092Autofeather Sys · malfunctionedON TAKEOFF, AUTO FEATHER BRIEFLY ARMED AND THEN REVERTED BACK TO AUTO FEATHER. SELECTED TAKEOFF WAS ABORTED, ABORT WAS AT LESS THAN 60 KTS. INTERROGATED CDS FOUND FAULT CODE 70B ON PEC, NR 1 AND PEC, NR 2 AND 398B ON PEC, NR 1 COMPLIED WITH FIM 61-20-02-810-SDR CA150224018Propeller · malfunctioned(CAN) DURING TAKEOFF, ENGINE NR 1 WENT INTO AN UNCOMMANDED AUTOFEATHER. THE FLIGHT CREW SELECTED POWER MANAGEMENT TO MAINTENANCE AND ENGINE NR 1 RETURNED TO NORMAL OPERATION. UNEVENTFUL LANDING WAS COMPLETED AT AIRPORT OF ORIGIN.SDR GLBA2015021700498Test Switch · sticksPILOT REPORTED THAT ON DESCENT NO2 TORQUE GAUGE STUCK AT 76%, (BOTH ANALOG AND DIGITAL), WITH POWER LEVER MOVEMENT TORQ WAS UP AND DOWN, BOTH POWER LEVERS WERE RETARDED, (NR 1 TORQUE MAX 151), THE NO 1 PROP INADVERTANTLY FEATHERED, PERFORMED EMERGENCY MEMORY ISDR QXEA2015012500038Autofeather Sys · no testAUTOFEATHER SYSTEM TEST FAILED. PERFORMED OPS TEST OF THE SYS IAW AMM 61-20-00-710-801. TEST PASSED. COULD NOT DUPLICATE. RETURNED TO SERVICE.SDR QXEA2015011600018Autofeather Sys · malfunctionedDURING THE TEST OF THE AUTOFEATHER SYSTEM "ABORT" MESSAGE APPEARS ON ENGINE DISPLAY. CYCLED ACFT POWER. PERFORMED TASK 61-20-00-710-801. NO DEFECTS. RETURNED TO SERVICE.
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