JASC 6120
Service difficulty reports · 1,421
Reports filed under 6120 · Propeller Controlling System, 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 = '6120' 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 = '6120' 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 BMAC040014Beta Tube · leakingPILOT REPORTED: SMOKE AND FUMES PRESENT IN COCKPIT, PROBLEM WENT AWAY WITH BOTH FLOWS OFF. NR 1 PROP HUB LEAKING LARGE AMOUNT OF OIL. FOUND SMOKE AND FUMES IN COCKPIT TO BE FROM LEAKING BETA TUBE ON NR 1 ENGINE. FOUND NR 1 ENGINE BETA TUBE LEAKING OIL. RESDR 2005FA0000012Governor · malfunctionedDURING NORMAL GROUND RUN-UP. THE AIRCRAFT PROPELLER AUTO-FEATHER SYSTEM WAS OPERATIONALLY CHECKED. BOTH LT AND TR PROPELLER SWITCHES WERE SELECTED AND BOTH PROPELLERS FEATHERED CORRECTLY. WHEN THE SWITCHES WERE RELEASED THE LT PROPELLER DID NOT COME OUT OF SDR HNAA0400161Beta Switch · out of rigAFTER TAKEOFF, NR 2 ENGINE HAD BATE LOCKOUT FAILURE ASSOCIATED WITH THE NR 2 ENGINE TORQUE FLUX MAX TORQUE AT 100 PERCENT RETARDED NR 2 POWER LEVER TO 900 RPM SYSTEM RETURNED TO NORMAL. PHL MNT IS GOING OUT TO A/C TO DEACTIVATE BETA LOCKOUT SYSTEM. CAPT DID NSDR RAIA00411012Beta Switch · failedPIT- LEFT BETA LIGHT ILLUMINATED IN FLIGHT. MAINTENANCE CLEANED AND SWAPPED BETA SWITCHES.SDR CX7A194J0456Pcu · fluctuatesRT ENGINE TRQ FLUCTUATED 5-10 PERCENT ON CLIMB OUT OF KDAY. F/O REPORTED NOTICEABLE YAW DURING TRQ FLUCTUATIONS. RAN ERRATIC ENGINE CHECKLIST. LOCKED OUT TRQ MOTOR. PROBLEM DISAPPEARED. APPROX. 8000 FT IN DESCENT PROBLEM REOCCURRED, CREW RAN CHECKLIST AGASDR QXEA200400707Autofeather Sys · malfunctionedBLI - FLIGHT 2157 AUTOFEATHER SYSTEM FAILED TO ARM DURING TAKEOFF ROLL. TAKEOFF ABORTED BELOW 60 KTS. MAINTENANCE COMPLIED WITH AUTOFEATHER SYSTEM AND POWER UPTRIM CHECK IAW DHC-8 AMM 71-00-00-868-027, PAGE 560-562. TEST CHECK GOOD. NO PARTS REPLACED AIRCRSDR CA041014003Control Unit · malfunctioned(CAN) DURING CLIMB, AN AIRCRAFT EXPERIENCED AN UNCOMMANDED AUTOFEATHER CAUSED BY NR 1 ENGINE TORQUE FLUCTUATIONS. WITH THE NR 1 PROP FEATHERED AND ENGINE STILL RUNNING AT REDUCED POWER, THE PILOT RETURNED TO BASE. PEC REPLACED. ENGINE RUNS CARRIED OUT. A/C RETSDR HNAA0400124Warning Horn · malfunctionedFLIGHT NR 4082 REPORTED HAVING THEIR BETA WARNING HORN SOUND WITH LOSS OF NORMAL BRAKING WHEN POWER LEVERS WERE SELECTED BELOW FLIGHT IDLE DURING GROUND HANDLING. IT WAS DETERMINED THAT THE BETA WARNING HORN SYSTEM WAS AT FAULT, SYSTEM WAS MEL'D AND DEACTIVATSDR 65141Torquemeter · inoperativeON TAKEOFF ROLL CREW OBSERVED NR 2 ENGINE VERY SLOW TO MAKE POWER. TAKEOFF WAS ABORTED, AIRCRAFT RETURNED TO THE GATE, MAINTENANCE CALLED. CORRECTIVE ACTION TAKEN: REMOVED AND REPLACED RT ENGINE TORQUE IND. OPS CK NORMAL. P/N 1143800653 S/N 461SDR 2004F00388Propeller · malfunctionedUPON TAKE OFF THE PILOT REPORT THAT LT PROPELLER WOULD ONLY MAKE 85 PERCENT NP. HE CHOSE TO LAND THE AIRCRAFT SGF FOR FUTHER INVESTIGATION, FOUND GAUGES WERE READING CORRECTLY AND ON THE GROUND RUN UP STILL ONLY PRODUCED 85 PERCENT. THE LAST LEG OF THE TRIPSDR 2004F00387Propeller · malfunctionedUPON TAKE OFF THE PILOT REPORT THAT LT PROPELLER WOULD ONLY MAKE 85 PERCENT NP. HE CHOSE TO LAND THE AIRCRAFT SGF FOR FUTHER INVESTIGATION. FOUND GAUGES WERE READING CORRECTLY AND ON THE GROUND RUN UP STILL ONLY PRODUCED 85 PERCENT. THE LAST LEG OF THE TRISDR 2004F00386Propeller · malfunctionedUPON TAKE OFF THE PILOT REPORT THAT LT PROPELLER WOULD ONLY MAKE 85 PERCENT NP. CHOSE TO LAND THE AIRCRAFT SGF FOR FUTHER INVESTIGATION FOUND GAUGES WERE READING CORRECTLY AND ON THE GROUND RUN UP STILL ONLY PRODUCED 85 PERCENT. THE LAST LEG OF THE TRIP WAS CSDR 2004F00390Indicator · malfunctionedUPON TAKEOFF PILOT REPORTED THAT THE LT PROPELLER WOULD ONLY MAKE 85 PERCENT NP. ABORTED THE LAST LEG AND CHOSE TO LAND. A GROUND RUN UP DETERMINED THAT THE LT NP WAS READING CORRECTLY. THE CAUSE FOR THIS DESCREPANCY IS YET UNKNOWN.SDR 2004F00389Propeller · malfunctionedUPON TAKEOFF, PIC REPORTED THAT THE LT PROPELLER WOULD ONLY MAKE 85 PERCENT NP. HE CHOSE TO ABORTED THE LAST LEG FROM LNC TO CRG AND CHOSE TO LAND SGF WHERE AFTER A GROUND RUN UP DETERMINED THAT THE LT NP WAS READING CORRECTLY. THIS LEG WAS A REPOSITIONING SDR 071794Arm · corrodedCORROSION ON ARM OF ACTUATOR.SDR HNAA0400082Beta Switch · malfunctionedNR 1 ENGINE BETA LOCKOUT FAILURE AT 500 FT, ENGINE OSCILLATED AT 1000 PROP RPM, TORQUE REACHED 112 PERCENT FOR 1 SECOND (CREW RETARDED THE CONDITION LEVER AND PROP RPM DROPPED TO 900 OSCILLATION STOPPED) CONSULTED MM AND ENGINE PROGRAM MAN. DETERMINED AC DID SDR CA040908002Control Unit · frozen(CAN) LT CONDITION LEVER FROZEN, BECAME INOPERABLE AT ALTITUDE.SDR CA041125003Ecu · failed(CAN) AUTO FEATHER SYSTEM FAILED TO ARMED WHEN TAKE-OFF POWER WAS APPLIED. ABORTED TAKE-OFF. FAULT CODE 794 WAS LOGGED IN THE CENTRAL DIAGNOSTIC SYSTEM (CDS) DURING THE FOLLOWING OVERSPEED GOVERNOR TEST. A FUNCTIONAL TEST OF THE PEC AND CALIBRATION PROCEDURESDR CA050802004Nut · loose(CAN) AFTER TAKE OFF, THE CREW NOTICED THE LT ENGINE TORQUE WAS OVER RED LINE, POWER WAS REDUCED. MAINTENANCE LATER DISCOVERED THAT PART OF THE LOW PITCH ARM WAS BROKEN OFF. IT WAS DETERMINED THAT THE NUT PN MS21042L4 HOLDING THE PIN PN 100-960036-1 HAD BECSDR 2004FA0000785Pcu · frozenNEW PROP CONTROL INSTALLED IAW SRM, CONTROL OPERATED FINE, AIRCRAFT WAS FLOWN ONCE AFTER COOL DOWN. PROP CONTROL WAS FROZEN, WAS ABLE TO BREAK FREE, INSTALLATION AND RIGGING CHECKED, PROP GOVERNOR CHECKED, AIRCRAFT FLOWN AGAIN, PROP CONTROL FROZEN AGAIN AFTERSDR RAIA00408020Transducer · malfunctionedBOTH IEC FAULTED. MAINTENANCE REMOVED AND REPLACED NR 2 NTS PRESSURE TRANSDUCER.SDR LR7A04088Propeller · overspeedNR 1 ENGINE OVERSPEED TO 106 PERCENT IN BOTH MECHANICAL AND NORMAL GOVERNING ON FINAL APPROACH. SHUTDOWN IAW QRH. THREE ENGINE FERRY FLIGHT TO ANC FOR REPAIR. AT ANC REPLACED NR 1 PROP ASSY PER JOB CARD HN6101 AND ENGINE RUN PER HN7101.SDR QXEA200400578Autofeather Sys · malfunctionedSEA FLIGHT NR 2279 AUTOFEATHER DID NOT ARM DURING TAKEOFF. PERFORMED AUTOFEATHER CHECK IAW FSM 3-146. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.SDR RAIA00408006Switch · inoperativeLT BETA LIGHT WENT OUT DURING TAXI. MAINTENANCE REMOVED AND REPLACED LT BETA PRESSURE SWITCH.SDR CA040803002Valve · failed(CAN) ON DESCENT, NR 4 PROP INDICATED 97 PERCENT PITCH LOCK CHECK WAS CARRIED OUT AND ENGINE SHUTDOWN. PROPELLER VALVE WAS REPLACED, AIRCRAFT GROUND RUN AND RETURNED TO SERVICE.SDR QXEA200400568Potentiometer · out of adjustABORTED TAKEOFF DUE TO AUTOFEATHER DID NOT ARM WITH TAKEOFF POWER SET AND 70 KNOTS OF AIRSPEED INDICATED. ADJUSTED NR 1 AND NR 2 AUTOFEATHER ARMING POTENTIOMETERS. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.SDR QXEA200400565Autofeather Sys · malfunctionedTAKEOFF WAS ABORTED DUE TO AUTOFEATHER DID NOT ARM ON TAKEOFF ROLL. PERFORMED AUTOFEATHER TEST. TEST CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.SDR MASA200400416Control Unit · failedRETURNED TO THE GATE DUE TO AN UNCOMMANDED AUTOFEATHER OF NR 1 ENGINE. MEL'D AUTOFEATHER SYSTEM AFTER VERIFYING IT WAS AT FAULT. 7/21 MAINTENANCE REPLACED TSCU, OPS CHECKED GOOD.SDR ASOA04493Servo Valve · malfunctionedDUIRNG INITATION OF DESCENT FROM ATL-VPS, THE CREW EXPERIENCED A SURGE IN THE RIGHT ENGINE FROM 65 PERCENT TORQUE TO 35 PERCENT TORQUE AND BACK UP. NP WENT FROM 77-80 PERCENT PLUS. AT 100 PERCENT OVERRIDE THE NP WENT FROM 98-101.9 PERCENT. THE AIRCRAFT BEGASDR HNAA0407100Pcu · faultyFLIGHT HAD TO SHUTDOWN THE NR 2 ENGINE DUE TO THE NR 2 PROP OVERSPEEDING THEN AUTOFEATHERING ON TAKEOFF CLIMB. IT WAS REPORTED AS THE TORQUE BEING 120 FOR 5 SECONDS AND THE PROP RPM WAS 1234 FOR 3 TO 4 SECONDS. PROP ASSEMBLY WAS REMOVED FOR AN OVERTORQUE INSPSDR CA040923001Control Unit · failed(CAN) AUTO FEATHER SYSTEM FAILED TO ARMED WHEN TAKE-OFF POWER WAS APPLIED. TAKE-OFF ABORTED AT APPROX 60 KTS. RETURNED TO GATE. AC GROUNDED. RT PROPELLER ELECTRONIC CONTROL UNIT (PECU) REPLACED IAW AMM 61-20-36.SDR QXEA200400459Potentiometer · out of adjustPDX - AUTO FEATHER FAILED TO ARM. MAINTENANCE ADJUSTED AUTO FEATHER ARMING POTENTIOMETER. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.SDR GLBA20030642Valve · out of adjustNR 1 PROP FEATHERED ON FINAL, ADJ NR 2 FEATHER VALVE, OPS CK GOOD.SDR RAIA00406012Governor · malfunctioned3644- CVG - RED BETA CAP ELIMINATED PLUS VIBRATION ON RT ENGINE. ENGINE SHUT DOWN. MAINTENANCE REMOVED AND REPLACED RT PROPELLER GOVERNOR.SDR CA040614003Beta Switch · intermittent(CAN) LT BETA LIGHT ILLUMINATED IN FLIGHT. AIRCRAFT RETURNED TO BASE, SWITCH REPLACED AND AIRCRAFT RETURNED TO SERVICE.SDR QXEA200400428Switch · inoperativePDX - ON FLIGHT NUMBER 2149, DURING TAKEOFF ROLL, THE AUTOFEATHER FAILED TO ARM. THE TORQUE WAS AT 95 PERCENT. THE AIRSPEED WAS AT 70 KIAS. AUTOFEATHER SELECT HAD ILLUMINATED AND AUTOFEATHER TEST NORMAL. CLEANED, INSPECTED AND SECURED CANNON PLUGS ON 1 & 2SDR QXEA200400429Potentiometer · inoperativePDX - ON FLIGHT NUMBER 2294, AUTOFEATHER DID NOT ARM DURING TAKEOFF ROLL, TESTED OK DURING DEPARTURES. TORQUE WAS AT 96 PERCENT. THE AIRSPEED WAS AT 70 KIAS. ADJUSTED AUTOFEATHER ARMING POTENTIOMETER ON THE NR 1 AND NR 2 POWER LEVERS. OPERATIONAL CHECK GOOSDR GLBA20030626Pcu · inoperativeNR 1 ENG LOSS OF OIL PRESSURE, REMOVED AND REPLACED NR 1 ENG PCU.SDR CA040519007Cable · broken(CAN) THE PROPELLER CABLE WORE WHERE IT ATTACHES TO THE SUPPORT CONNECTED TO THE STARTER JUST BELOW THE GOVERNOR. THIS AREA OF THE ASSEMBLY CANNOT BE VISUALLY INSPECTED. THE CREW NOTICED ON TAKING OFF, THE LOSS OF PROP PITCH CONTROL, REDUCED MANIFOLD PRESSURE,SDR CA040519012Valve · leaking(CAN) ON A TRAINING FLIGHT THE RT ENGINE WAS SHUT DOWN. DURING THE RESTART, THE RT PROP BEGAN TO OVERSPEED. THE CREW ACCOMPLISHED THE OVERSPEED PROCEDURE AND RETURNED TO BASE WITHOUT INCIDENT. MAINTENANCE FOUND IN TROUBLESHOOTING THE DISTRIBUTOR VALVE HAD OSDR VNAA0404015Control Unit · failedON TAKEOFF, RIGHT HAND ENGINE TORQUE SPIKED TO 125. FLIGHT 2540 ABORTED TAKEOFF AND RETURNED TO GATE. MAINTENANCE INSPECTED AND REPLACED THE RIGHT HAND PROPELLER CONTROL UNIT IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 61-00-00. OPERATIONAL CHECKS WERE PESDR OG52004F00001Rod End · wornPROP GOVERNOR CONTROL ROD END CAME APART FROM THE PROP GOVERNOR, CAUSING A LACK OF CONTROL TO THE PITCH OF THE AC PROPELLER. WORN AREAS THAT CAUSED TO OCCUR ARE THE BASE OF THE BALL JOINT AND WEAR AT THE END OF THE SPRING LOADED RETAINER ASSY. (GL21200402103SDR HNAA0400028Bulkhead · crackedDURING THE MAJOR INSPECTION OF PROPELLER ACTUATOR PARTS, THE PISTON BULKHEAD WAS FOUND CRACKED DURING FLUORSCENT PENNENTRANT INSPECTION. THIS HAS BEEN A COMMON FIND WITH THIS PART.SDR TRBA2004023Autofeather Sys · failedON CLIMB, AROUND 6000 FEET, LEFT ENGINE LOST TORQUE (POWER) AND ITT DROPPED TO 480 DEGREE. ENGINE WAS SHUTDOWN AND CREW PROCEEDED WITH EMERGENCY PROCEDURES. REMOVED AND REPLACED AUTO-FEATHER UNIT. (M)SDR HNAA0400024Control Unit · inoperativeDURING CLIMB PROP AT 1050 PROP JUMPED BETWEEN 1020 & 1080 AIRCRAFT RETURNED TO FIELD, CAPT REPORTED THE PROP SYNC WAS ON AT THE TIME AND THEY DID NOT TURN IT OFF. R & R NR 2 PCU.SDR LU4R349MCylinder · damagedCYLINDER (PN B-2452-1) SEPARATED FROM PROPELLER ON GROUND RUN. INSPECTION SHOWED THREAD DAMAGE OF CYLINDER. AFTER DISCUSSION WITH MFG, THE LIKELY CAUSE IS DIE TO HIGH PRESSURE FROM GOVERNOR, USUALLY CAUSED BY STICKING PRESSURE RELIEF VALVE.SDR 2005FA0000044Block · leakingAFTER TURNING BLEEDS ON DURING CLIMB, CREW IMMEDIATELY NOTICED AN ODOR AND THEN SAW SMOKE. BLEEDS WERE TURNED OFF, CHECKLIST ITEMS COMPLETED. CHECKED FOR ANNUNCIATOR LIGHTS, PRESSURE INDICATIONS, AND FIRE LIGHT INDICATIONS, ALL WERE NORMAL. CREW RETURNED TOSDR PCAA0403174Pcu · stickingFLIGHT 3870 HAD TO SHUTDOWN IT'S NR 2 ENGINE AND RETURN TO FIELD DUE TO THE AIRCRAFT YAWING AND THE NR 2 ENGINE AUTOFEATHERING AFTER ROTATION. AIRCRAFT RETURNED TO LGA WITHOUT INCIDENT. MAINTENANCE AND AVIONICS RESPONDED TO DISCREPANCY. AVIONICS DOWNLOADED SDR CA040304008Line · out of position(CAN) THE SHOP ENGINEER WAS TAKING STOCK OF ENGINE WHEN HE NOTICED THAT THE PCU CONTROL ROD (CONDITION) P/N 87620097-023,POWER PLANT BUILD IPC REF 71-00-02 FIG 10ITEM 2 WAS CONTACTING THE P3 AIR PRESSURE SENSING LINE P/N 3034384 (PW) IPC 72-01-30 FIG 1 ITEM 10SDR QXEA200400139Governor · malfunctionedSEA FLIGHT NR 2328 AFTER-START PROCEDURE, WHEN AUTOFEATHER WAS SELECTED, NR 1 PROP FEATHERED BUT THERE WERE NO INDICATIONS OF THAT EXCEPT PROP RPM 220. REPLACED THE OVERSPEED GOVERNOR. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.
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