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 QXEA9800063Switch · failedPDX - AUTOFEATHER SYSTEM WILL NOT TEST. MAINTENANCE REPLACED POWER LEVER SWITCH. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.SDR PLGA980208AAutocoarsen · malfunctionedPWM - FLT 4385 - DURING TAKEOFF, THE AUTOCOARSEN FAILED TO ARM. TAKEOFF WAS ABORTED AND AIRCRAFT RETURNED TO THE GATE. MAINTENANCE RAN AIRCRAFT AND FOUND SYSTEM TO BE OPERATING NORMAL. AIRCRAFT WAS RETURNED TO SERVICE. (M)SDR AU980120Control Cable · broken(AUS) RT PROPELLER PITCH CONTROL CABLE FAILED.SDR REXA98031Pitch Trim · out of positionCONFIG LIGHT COMES ON WHEN POWER LEVERS ARE PUSHED UP. FOUND STANDBY PITCH TRIM OUT OF NORMAL RANGE CAUSING CONFIG LIGHT. MOVED TRIM TO NORMAL RANGE AND RESET TRIM. OK FOR SERVICE. (M)SDR QXEA9800044Autofeather · malfunctionedPUW - AUTOFEATHER WOULD NOT TEST. MAINTENANCE CONTROL HAD CREW CYCLE ECU'S, POWER LEVERS AND CONDITION LEVERS STATICALLY, THEN STARTED ENGINES AND TESTED SYSTEM. OPERATIONAL CHECK GOOD, NO PARTS REPLACED.SDR 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 98ZZZX551Control Cable · failedPROPELLER CONTROL CABLE BROKE AT ENGINE END AT THE POINT WHICH THREADED END IS CRIMPED ON TO CABLE END.SDR SIMA980181Harness · shortedAZO - FLT 4171 - EN ROUTE TO GRR FROM ORD, THE RT PROP MOVED TO FEATHER UNCOMMANDED. THE ENG WAS SHUT DOWN AND A/C DIVERTED TO AZO AND LANDED WITHOUT INCIDENT. CREW DID NOTE TORQUE IND WAS AT MAX AT THE TIME THE UNCOMMANDED FEATHER OCCURRED. MX FOUND A CHAFSDR AU980054Control Cable · loose(AUS) LT PROPELLER REVERSING LEVER CABLE LOOSE ON INNER WIRE AND BALL END.SDR QXEA9800018Autofeather Syst · failed testEUG- AUTOFEATHER WILL NOT TEST PROPERLY. CYCLED POWER LEVERS AND PERFORMED AUTOFEATHER TEST AGAIN. TESTED GOOD, AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.SDR QXEA9800013Autofeather · failed testMFR - AIRCRAFT AUTO FEATHER TEST INOP. MAINTENANCE CYCLED POWER LEVERS SEVERAL TIMES, OPERATIONAL CHECK GOOD.SDR VTZA98004Nts Valve · failedFLT 6475 - IAD-SCE - DURING TAXI FLIGHT, AIRCRAFT RETURNED TO GATE DUE TO NR 1 ENGINE FLAMED OUT ON TAXI. AIRCRAFT RETURNED TO GATE AND WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED NTS VALVE, OPS CHECK OK. AIRCRAFT WAS RELEASED ASDR UF6A980104Prop Feather Sys · inopORD - FLT 5736 - NR 2 PROP DID NOT FULLY FEATHER WHEN ENGINE WAS SHUTDOWN. MAINTENANCE INSPECTED AND RAN NR 2 ENGINE. SYSTEM OPS CHECKED WITHIN LIMITS. NO DEFECTS NOTED. (M)SDR MASA98002Pressure Switch · failedPIT/MBS - FLT 5999 - LEFT AUTOFEATHER FAILED ON CLIMB-OUT. MAINTENANCE REMOVED AND REPLACED PRESSURE SWITCH. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (X)SDR VNAA9712017Connector · dirtyBEFORE TAKEOFF, PROPELLER OVERSPEED TESTED FAILED. AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND FOUND PROPELLER OVERSPEED GOVERNOR CANNON PLUG DIRTY. CLEANED CANNON PLUG. OPERATIONAL TEST CHECKED GOOD AND AIRCRAFT WAS APPROVED TO RETURN TO SERVSDR VNAA9712015Circuit Breaker · trippedDURING TAXI, THE CREW ATTEMPTED A PROP OVERSPEED TEST. THE TEST FAILED, AND THE AIRCRAFT RETURNED TO THE GATE . PIT MAINTENANCE INSPECTED AND RESET THE OVERSPEED CIRCUT BREAKER. OPERATION CHECKS WERE COMPLIED WITH IN ACCORDANCE WITH DORNIER MAINTENANCE MANUSDR 98ZZZX109Cam Assy · wornDURING ENGINE REPAIR RESULTING FROM CATASTROPHIC FAILURE OF PROPELLER GOVERNOR, DISSASSEMBLY OF PROPELLER PITCH CONTROL REVEALED SEVERE WEAR OF CAM SLOT AND PIN ON SLEEVE ASSY 869647-5. THERE IS LITTLE DOUBT THAT THIS ASSY WOULD HAVE FAILED LONG BEFORE SCHEDUSDR REXA97276Plug · misinstalledLEFT PROP OIL PRESSURE 0 PSI 40 DEGREES CELSIUS, CWP WARNING CAME ON. INSTALLED AND LOCK WIRED PROP RIG PIN PLUG. GROUND RUN AND OPS CHECK GOOD. (M)SDR QXEA9700891Tq Sensor · malfunctionIMMEDIATELY AFTER ROTATION, THE NR 2 ENGINE AUTOFEATHERED, TORQUE WAS NOTICED AT 179 PERCENT. THE PROPELLER UNFEATHERED AND BEGAN TO DEVELOP POWER. TORQUE ON THE ENGINE INCREASED TO ABOUT 20 TO 30 PERCENT AND THE ACFT YAWED BACK TO THE LEFT. POWER LEVERS WESDR QXEA9700876Autofeather Sys · malfunctionedAUTOFEATHER DID NOT ARM ON TAKEOFF ROLL. ABORTED TAKEOFF AND RETURNED TO THE GATE. INSPECTED AND RETRIMMED THE ENGINES, OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.SDR RAIA971203Nts Switch · failedFLT 7502 - STL - WITH APR ARMED LEFT SIDE FIRES WITH POWER LEVER ADVANCE. MAINTENANCE REPLACED BOTH NTS PRESSURE SWITCHES. (M)SDR VTZA97666Prop Governor · out of adjustFLT 6266 - IAD-BTV - ABORTED TAKEOFF DUE TO LEFT ENGINE SLOW TO MAKE TORQE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND ADJUSTED PROP GOVERNOR, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)SDR SRAA971109Valve Housing · defectiveON TAKEOFF ROLL, NR 1 ENGINE TORQUE READING CLIMBED RAPIDLY THEN DROPPED TO 7,000 LBS, RPM DROPPED TO 97 PERCENT. ABORTED TAKEOFF WITHOUT INCIDENT. FOUND NR 1 PROP VALVE HOUSING DEFECTIVE. REPLACED NR 1 VALVE HOUSING IAW SAT J/C 7101 AND 7101-2, OPS CHECKEDSDR VTZA97674Prop Control · failedFLT 6193 - IAD-JFK - DURING CLIMB, AIRCRAFT MADE AN UNSCHEDULED LANDING AT IAD DUE TO RIGHT ENGINE TORQUE FLUCTUATION. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED PROP PITCH CONTROL, OPS CHECK OK. AIRCRASDR LR7A9730Nts Valve · failedNR 2 ENG SHUTDOWN DUE TO RPM FOLLOWING POWER LEVER POSITION. REMOVED AND REPLACED NTS VALVE IAW N ITEM CARD N61-13 AND ALSO, REMOVED AND REPLACED PITCHLOCK VALVE IAW N ITEM CARD N61-13. OPS AND LEAK CHECK NORMAL.SDR QXEA9700771Switch · dirtySEA- ABORTED TAKEOFF NO AUTO FEATHER ARM LIGHT. CLEANED POWER LEVER SWITCH QUADRANT, NO PARTS REPLACED AND OPERATIONAL CHECK GOOD.SDR CA971216010Prop Control · leaking(CAN) NR 2 ENGINE SHUTDOWN DUE TO LOSS OF OIL PRESSURE. OIL WAS LOST THROUGH THE PCU. THE PCU WAS REPLACED. ENGINE INSPECTION CARRIED OUT AND THE AIRCRAFT RETURNED TO SERVICE. PART TC: 19,358.SDR QXEA9700754Ecu · malfunctionedLWS - NR 2 PROP WOULD NOT UNFEATHER, HAD CREW CYCLE ECU. PROPELLER THEN UNFEATHERED NORMALLY. NO PARTS REPLACED.SDR QXEA9700746Press Switch · malfunctionON TAKEOFF ROLL, NR 2 ENGINE HYDRAULIC PUMP CAUTION LIGHT ILLUMINATED. ALL HYDRAULIC INDICATIONS APPEARED NORMAL. ABORTED TAKEOFF AND RETURNED TO THE GATE. SYSTEM PLACED ON MEL. AIRCRAFT RETURNED TO SERVICE. MEL CLEARED BY REPLACING THE HYDRAULIC PRESSURESDR VNAA9711003Connector · looseDURING TAXI FOR TAKEOFF,THE CREW ATTEMPTED A PROPELLER OVERSPEED WARNING TEST. THE TEST FAILED AND THE AIRCRAFT RETURNED TO THE GATE WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND TIGHTENED THE LEFT PROPELLER OVERSPEED GOVERNOR CANNON PLUG, IN ACCORDANSDR COMA9710469Sig Cond Unit · malfunctionedRIGHT HAND PROPELLER AUTOFEATHER SYSTEM IS INOP. REPLACED THE ENGINE SIGNAL CONDITIONER UNIT.SDR 97ZZZM1145O-Rings · cutDURING CRUISE FLT TRI-ATL, LEFT ENGINE LOST OIL PRESSURE AT 12,000 FEET MSL. CCAS AND LOCAL ALERTS ACTIVATED. LEFT ENGINE WAS SHUT DOWN PER THE QRH, FLIGHT CONTROL AND MAINTENANCE CONTROL WERE NOTIFIED. AN EMERGENCY WAS DELCARED AND FLIGHT CONTINUED TO THE SDR SRAA971101Valve Housing · failedDURING FLIGHT, NR 4 PROP FLUX IN NORMAL GOVERNING STEADY AND WITHIN LIMITS IN MECHANICAL. RPM WENT OUT OF LIMITS IN MECHANICAL GOVERNING. PROP WAS NOT PITCHLOCKED, SHUTDOWN IAW AOM. REMOVED AND REPLACED NR 4 VALVE HOUSING PER IAW JOB CARD NR 6103, GROUND RSDR SRAA971013Control Rod · strippedDURING LANDING, NR 1 PROP WOULD NOT GO INTO THE BETA RANGE. ON INSPECTION FOUND THREADS ON THE CONTROL ROD AND ROD ENDS STRIPPED. REPLACED CONTROL ROD ON PROP CONDITION CONTROLS IAW MM 61, OPS CHECK GOOD.SDR CA971119004Control Cable · broken(CAN) DURING CRUISE, LEFT PROPELLER WENT TO FINE PITCH. PROPELLER CONTROL IN COCKPIT STUCK IN CRUISE POSITION AND UNABLE TO MOVE CONTROL. INVESTIGATION REVEALED PROP CABLE BROKEN AT GOVERNOR END 2.50 INCHES INSIDE CABLE HOUSING. NEW CABLE INSTALLED.SDR CA971024014Balljoint · worn(CAN) DURING REMOVAL OF THE PROPELLER GOVERNOR FOR OVERHAUL, IT WAS FOUND THAT THE PITCH CONTROL CABLE SEPARATED EASILY FROM ITS HOLDING CASE. ON CLOSER INSPECTION, THE BALL JOINT WAS FOUND SEVERLY WORN. THE LOCATION OF THE WORN AREA COULD NOT BE SEEN VISUALSDR UF6A971001Connector · looseSBN - FLT 5751 - AUTOFEATHER WOULD NOT ARM WITH TAKEOFF POWER SELECTED. MAINTENANCE FOUND PIN 22 ON ENGINE DECK CANNON PLUG 'C' PUSHED BACK. RESEATED PIN. SYSTEM OPS CHECK GOOD. (M)SDR PLGA971003ACircuit Breaker · trippedBOS - FLT 4276 - ON TAKEOFF, THE AUTOCOARSEN ARM LIGH REMAINED ILLUMINATED. TAKEOFF WAS ABORTED AND AIRCRAFT RETURNED TO THE GATE. MAINTENANCE FOUND THE AUTOCOARSEN CIRCUIT BREAKER OPEN. BREAKER WAS RESET AND SYSTEM TESTED NORMAL. (M)SDR PLGA971002ACircuit Breaker · trippedBOS - FLT 4237 - DURING TAKEOFF, THE AUTOCOARSEN FAIL LIGHT ILLUMINATED. TAKEOFF WAS ABORTED AND AIRCRAFT RETURNED TO THE GATE. MAINTENANCE FOUND THE AUTOCOARSEN CIRCUIT BREAKER OPEN. BREAKER WAS RESET AND SYSTEM TESTED GOOD. (M)SDR VTZA97521Prop Pitch Contl · failedFLT 6249 - IAD-BGM - MADE A UNSCHEDULED LANDING AT IAD DUE TO RIGHT ENGINE RPM'S FLUCTUATED PLUS OR MINUS 5 PERCENT IN FLIGHT. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED RIGHT ENGINE PPC, OPS CHECK OK. SDR 97ZZZX4613Press Switch · failedFLIGHT CREW REPORTED LEFT PROPELLER FEATHERED DURING TAKEOFF. MAINTENANCE PERSONNEL COULD NOT DUPLICATE PROBLEM ON GROUND. REPLACED LEFT ENGINE TORQUE PRESSURE SWITCH AS A TROUBLESHOOTING PRECAUTION.SDR REXA97262Autocoarsen · inopAUTOCOARSEN IS INOP ON TWO TAKEOFF ATTEMPTS. REMOVED AND REPLACED AUTOCOARSEN COMPUTER. (M)SDR QXEA9700572Connector · malfunctionAUTOFEATHER ARM WILL NOT TEST. REPLACED CANNON PLUGS 9811-P13 AND P14, OPERATIONAL CHECKS GOOD FOR NR 1 AND NR 2 ENGINE AUTOFEATHER SYSTEM.SDR QXEA9700569Harness · malfunctionPDX - UNABLE TO TEST AUTO FEATHER, NO ARM LIGHT DURING TEST. REPLACED NR 1 AND NR 2 TRUSS HARNESS FROM FIREWALL TO ECU. GROUND RAN, OPERATIONAL CHECK GOOD.SDR UF6A970903Prop Control · malfunctionedORD - FLT 5703 - NR 2 PROP DID NOT FULLY FEATHER ON SHUTDOWN. MAINTENANCE INSPECTED AND PERFORMED ENGINE RUNS. SYSTEMS OPS CHECKED GOOD. (M)SDR COMA9710402Tq Signal Cond · malfunctionAUTO FEATHER AURAL WARNING SOUNDED DURING TAKEOFF ROLL. REPLACED THE RIGHT ENGINE TORQUE SIGNAL CONDITIONER.SDR QXEA9700543Autofeather Test · failedBOI - AUTO FEATHER TEST FAILED PRIOR TO DEPARTURE. NO ARM, OR UPTRIM, OR AUTO FEATHER LIGHTS. PERFORMED GROUND TEST OF AUTO FEATHER AND POWER UPTRIM. NO DEFECTS NOTED, NO PARTS REPLACED, OPERATION CHECK GOOD.SDR 97ZZZX4291Pitch Change Rod · crackedPITCH CHANGE ROD CRACKED IN LAST THREAD ON ENGINE SIDE. CRACK PROPAGATED THROUGH THREAD TO INSIDE CAUSING OIL LEAK. CRACK FOUND DURING MAGNETIC PARTICLE INSPECTION AND VERIFIED DURING PRESSURE CHECK OF ROD OUTSIDE OF PROPELLER. ROD WAS NEW AT OVERHAUL.SDR NSVA97010Cable End · looseDURING TAKEOFF ROLL, RIGHT ENGINE BETA CABLE ADJUSTMENT SLIPPED ALLOWING PROPELLER TORQUE TO EXCEED REGULAR TAKEOFF TORQUE. INSPECTED CABLE AT GROUND FINE SOLENOID. FOUND CABLE END LOOSE. ADJUSTED AND TIGHTENED CABLE. NO FURTHER DISCREPANCY. (M)SDR QXEA9700531Blade · out of adjustPDX- ON TAKEOFF ROLL, AIRCRAFT PULLED RIGHT, REQUIRED LEFT BRAKE AND 10 PERCENT TORQUE SPLIT TO MAINTAIN AIRCRAFT ON CENTER LINE. ABORTED TAKEOFF AND RETURNED TO THE GATE. ADJUSTED THE NR 2 PROP BLADE ANGLE AND THE TORQUE SIGNAL CONDITIONER. AIRCRAFT TAXI C
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