JASC 2434
Service difficulty reports · 849
Reports filed under 2434 · DC Generator-Alternator, 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 = '2434' 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 = '2434' 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 2002FA0001257Nut · separatedNUT SECURING ALTERNATOR DRIVE GEAR CAME OFF. GEAR SUBSEQUENTLY FELL OFF OF ALTERNATOR SHAFT DAMAGING INTERNAL ENGINE GEARS.SDR CA030726005Alternator · failed(CAN) LOSS OF ALTERNATOR POWER. ALTERNATOR OVERHAULED.SDR MASA200200020Generator · malfunctionedABORTED TAKEOFF AT THE START OF THE ROLL DUE TO IDG NR 2 FAULT CAUTION MSG. AIRCRAFT RETURNED TO GATE AND MX PLACED THE GEN 2 ON MEL.SDR GLBA2002159Generator · failedAIR RETURN, LT GENERATOR TIE OPEN ANNUNCIATOR ILLUMINATED IN FLIGHT, REMOVED AND REPLACED P172 & A257 OPS CHECK GOOD.SDR IO5R081096Starter · failedSTARTER WILL NOT ROTATE INSTALLED LOANER ASSY.SDR XNOA01077Generator · failedTAXI OUT IN BOS NR 2 GENERATOR 3 LIGHT TRIP WOULD NOT RESET. ON FAULT PANEL WENT FROM UNDER EXCITED TO UNDER VOLTAGE. ALL THREE GENERATORS ON LINE NR 2 GENERATOR HAD 0 KWS. NR 3 GENERATOR HAD 42 KWS. REMOVED & REPLACED GENERATOR ON NR 2 ENGINE IAW B727 MSDR CA021031016Bracket · cracked(CAN) ALTERNATOR BRACKET BROKEN. REPLACED BRACKET.SDR AUS20021399Drive Shaft · failed(AUS) NR 2 GENERATOR DRIVESHAFT FAILED.SDR COEA02021740Generator · failedFLIGHT CREW REPORTED RIGHT GENERATOR FAIL LIGHT ILLUMINATED DURING CRUISE FLIGHT AT FL2000. MAINTENANCE PERSONNEL REPLACED LEFT DC GENERATOR. AIRCRAFT RETURNED TO SERVICE. (M)SDR AUS20020992Bearing · failed(AUS) ALTERNATOR BEARING FAILED. SUSPECT UNAPPROVED PART.SDR AUS20020991Alternator · failed(AUS) ALTERNATOR FIELD SHORTED.SDR AUS20020990Commutator · unapproved part(AUS) ALTERNATOR FAULTY. INVESTIGATION FOUND INCORRECT COMMUTATOR FITTED. UNAPPROVED PART.SDR AUS20020993Alternator · failed(AUS) ALTERNATOR FIELD SHORTED.SDR CA020903004Hub · worn(CAN) IN FLIGHT ALTERNATOR FAILURE. DURING TROUBLESHOOTING, FOUND THE HUB COMPLETELY WORN OUT, THEREFORE THE GEAR COULD NO LONGER ROTATE THE ALTERNATOR.SDR 2002FA0001018Alternator · failedTHE ALTERNATORS INSTALLED ARE FAILING CONSISTENTLY. THEY USUALLY LAST BETWEEN 100 AND 500 HOURS FOR WHATEVER REASON THE RESISTANCE IN THE FIELD CIRCUIT INCREASES TO THE (MEGA OHM) RANGE, RENDERING THE ALTERNATOR TOTALLY INOPERATIVE DUE TO THE NATURE OF THE WASDR CA020730006Rotor · out of tolerance(CAN) NEW ROTOR WAS INSTALLED AT OVERHAUL. AFTER 374 HRS, UNIT FAILED TO PRODUCE OUTPUT. ON DISASSEMBLY AND INSPECTION, ONE BRUSH WAS FOUND COMPLETELY WORN OUT, AND THE BRUSH SHUNT BRAIDED LEAD WAS CHAFED IN TWO. FOUND THAT THE SLIP RINGS ON THE ROTOR WERE OUSDR UIA02004Shaft · brokenNR 1 ENGINE SHUTDOWN 15 MINS AFTER TAKING OFF, SAFE SINGLE ENGINE LANDING AT MZG. MECHANIC CREW CHECKED THE ENGINE AND THE OIL TANK CHIP DETECTOR, FOUND DEBRIS AND CHECKED THE STARTER. DC GENERATOR SHAFT BROKEN, TRANSFER ACCESSORY GEARBOX INPUT AND OUTPUT HSDR HCM2002F00002Relay · failedWHILE ON ROUTINE SIGHTSEEING TRIP, THE PILOT EXPERIENCED A FLICKERING GENERATOR FAILURE WARNING LIGHT WHILE TAKING OFF FROM THE AIRPORT. CONTINUED FLIGHT UNTIL RECEIVED A STEADY GENERATOR FAILURE WARNING LIGHT. RETURN TOT AIRPORT. UPON INSPECTION BY MAINTENSDR AUS20020720Generator · disconnected(AUS) NR 1 ENGINE DRIVEN GENERATOR DISCONNECTED.SDR AUS20020858Bolt · loose(AUS) ALTERNATOR THROUGH BOLTS LOOSE. ROTOR RUBBING ON FIELD WINDINGS CAUSING DAMAGE TO STATOR. SUSPECT CAUSED BY FAILURE TO RETORQUE BOLTS AFTER FIFTEEN HOURS OPERATION.SDR 2002FA0001011Pulley · loosePILOT REPORTED NO ALTERNATOR OUTPUT. INSPECTION FOUND PULLEY LYING INSIDE COWLING FROM ALTERNATOR. ALTERNATOR STILL ON MOUNTS, BUT LOOSE.SDR AUS20020617Generator · faulty(AUS) APU GENERATOR FAULTY. LIMITED INFORMATION PROVIDED.SDR CA020704005Slip Ring · grooved(CAN) INSPECTED GEN NR 2 BRUSHES FOR WEAR DURING SCHEDULED 100 HR INSP. FOUND APPROX 50 PERCENT LIFE REMAINING ON MOD "C" BRUSHES, HOWEVER THE BRUSH SLIP RING CONTACT AREA WAS GROOVED. IAW AIRCRAFT MM IF THERE IS PITTING, GROOVES OR SCORING FOUND ON THE SLIP SDR RH62002F00000Alternator · shortedUNUSED RECTIFIER POST BECOME LOOSE AND FELL INTO BOTTOM OF ALTERNATOR CASE. VIBRATION CAUSED LOOSE BOLT TO SHORT STATOR WINDINGS AND INTERMITTENTLY CAUSE DISCHARGE SPIKE IN BUS SYSTEM SPIKE WOULD CAUSE AVIONICS TO TURN OFF AND LOOSE NAVIGATION INFORMATION.SDR 2002FA0000731Alternator · failedCHARGING SYSTEM CEASED TO FUNCTION. DIAGNOSIS WAS ALTERNATOR FAILURE, PROBABLY BREAKDOWN OF DIODES. NO EXTERNAL SIGNS OF FAILURE.SDR 2002FA0000768Bracket · crackedALTERNATOR BRACKET CRACKED, THIS BRACKET IS USED TO ADJUST THE BELT TENSION. REMOVED BRACKET AND INSTALLED NEW BRACKET. ADJUSTED BELT TENSION IAW MM.SDR HEEA079346Control Unit · inoperativeDC CONTROL UNIT CAUSED GENERATOR SYSTEM TO BE INOPERATIVE.SDR HEEA079345Control Unit · inoperativeDC CONTROL UNIT CAUSED GENERATOR SYSTEM TO BE INOPERATIVE.SDR HEEA079344Control Unit · inoperativeDC CONTROL UNIT CAUSED GENERATOR SYSTEM TO BE INOPERATIVE.SDR CA020531008Drive Gear · damaged(CAN) DURING CRUISE FLIGHT, THE RT ALTERNATOR FAIL LIGHT CAME ON. AFTER LANDING THE ALTERNATOR WAS REMOVED.THE ALTERNATOR DRIVE GEAR FAILED CAUSING THE DRIVE GEAR TO SLIP AND NOT TURN THE ALTERNATOR. THE RUBBER SURROUNDING THE GEAR WAS HALF GONE. THE DRIVE GEASDR 2002FA0000683Bushing · wornENGINE DRIVEN ALTENATOR DRIVE FOUND WORN.SDR 2002FA0000732Alternator · malfunctionedALTERNATOR MALFUNCTIONED. NO OUTPUT. DISASSEMBLED, FOUND ONE BRUSH WORN AND OTHER MISSING. I SUSPECT BRUSH WAS WORN TO THE POINT THAT THE SPRING FOUND ITS WAY TO THE COMMUTATOR, WRAPPING ITSELF AROUND IT. BRUSH NOT LOCATED.SDR AUS20020657Alternator · faulty(AUS) ALTERNATOR SUSPECT FAULTY. INVESTIGATION FOUND THAT ALTERNATORWINDINGS HAD SHORT CIRCUITED.SDR CA020620003Alternator · failed(CAN) LT ALTERNATOR FAILED LIGHT CAME ON IN FLIGHT. RETURN TO BASE. MECHANICS CHECKED CONNECTIONS ON ALTERNATOR AND FOUND ALL WIRING CORRECT. THEY REMOVED THE ALTERNATOR AND FOUND THAT THE FRONT BEARING ON THE ALTERNATOR HAD FAILED. THIS IN TURN HAD CAUSED THESDR AUS20020495Nut · missing(AUS) RT ALTERNATOR DRIVE SHAFT COUPLING RETAINING NUT MISSING. SPLIT PIN WAS STILL INTACT. SUSPECT NUT SPLIT AND FELL OFF. LOOSE COUPLING CONTACTED ENGINE DRIVE GEARS CAUSING METAL CONTAMINATION OF THE ENGINE.SDR 2002FA0000713Support Bracket · crackedALTERNATOR SUPPORT BRACKET CRACKED. PART REMOVED AND A NEW SUPPORT BRACKET INSTALLED.SDR CGO2002F00001Stator · damagedALTERNATOR WAS REMOVED FROM ENGINE FOR CYLINDER REMOVAL ACCESS. WHILE REMOVED A 500 HOUR INSPECTION WAS INITIATED. THE STATOR WINDINGS WERE DISCOVERED TO BE OVERHEATED AND BLACKENED. ALTERNATOR HAD ACCUMULATED ONLY 241.7 HOURS SINCE LAST 500 HOUR INSPECTIOSDR CA020417002Shaft · sheared(CAN) CREW LOST NR 2 GENERATOR IN FLIGHT. AIRCRAFT RETURNED TO BASE AND THE SHAFT WAS FOUND SHEARED.SDR AUS20020360Diode · failed(AUS) NR 2 GENERATOR OFF LINE, THE EMERGENCY BUS INTERCONNECT CIRCUIT BREAKER POPPED, PILOT LOST POWER TO THE NR 2 BUS. INVESTIGATION FOUND 2 DIODES ON THE EMERGENCY BUS FAILED RESISTANCE CHECK.SDR AUS20020279Housing · cracked(AUS) ALTERNATOR FRONT HOUSING WEBS CRACKED.SDR AUS20020207Filter · chafed(AUS) ALTERNATOR FILTER TOUCHING AUX' TERMINAL OF ALTERNATOR.SDR AUS20020123Brush Block · shorted(AUS) ALTERNATOR BRUSHES SHORTING BETWEEN THE SLIP RINGS AND ALTERNATOR SLIP RING END BEARING.SDR AUS20020059Bearing · lack of lube(AUS) ALTERNATOR BEARING SEIZED. SUSPECT CAUSED BY LACK OF LUBRICATION.SDR CA011217004Drive Shaft · worn(CAN) DURING ROUTINE 3000 HOUR INSPECTION THE DRIVE SHAFT WAS FOUND TO BE WORN AT THE FWD END OF THE SHAFT. THIS CAUSED THE SHAFT TO WOBBLE EVEN WITH THE NEW BEARING IN PLACE.FWD BEARING WAS NOT SIEZED OR STIFF.NEW SHAFT AND BEARINGS INSTALLED.SDR CA011221003Shaft · sheared(CAN) WHILE ON PAD, WITH ROTORS ENGAGED, IT WAS NOTICED ZERO AMPS ON DC AMMETER. THE GEN IREC SWITCH WAS SELECTED TO REC (RECTIFIED) AND 150 AMPS WAS READ. SUSPECTED DC GEN FAILURE. CARRIED OUT CHECK LIST PROCEDURE & THAT WAS WHEN THE DC GEN LIST ILLUMINASDR CA011210020Drive Shaft · worn(CAN) 3000 HR. REPLACEMENT OF OUTER DRIVE SHAFT BEARING WAS CARRIED OUT. ON DISASSEMBLY OF DRIVE HOUSING ASSEMBLY, THE INNER BEARING MOUNTING SURFACE OF DRIVE SHAFT WAS FOUND WORN DUE TO DRIVE SHAFT SPINNING IN THE INNER RACE OF THE BEARING.A NEW DRIVE SHAFTSDR R292001F00001Bolt · looseDURING INSPECTION, MECHANIC DISCOVERED THE FOUR INTERNAL WRENCHING BOLTS (PN MDW 10021-1) THAT HOLD THE FRONT CASE (PN ASG 12057-1) AND REAR CASE (PN ASG 12056-1) HALVES TOGETHER, WERE LOOSE. THE SAFETY WIRE FROM THE BOLT HEAD TO THE THROUGH BOLT RETAINER (PNSDR R292001F00000Bolt · looseDURING INSPECTION, MECHANIC DISCOVERED THE FOUR INTERNAL WRENCHING BOLTS (PN:MDW 10021-1) THAT HOLD THE FRONT CASE (PN ASG 120561) HALVES TOGETHER, WERE LOOSE. THE SAFETY WIRE FROM THE BOLT HEAD TO THE THROUGH BOLT RETAINER (PN ASG 100091) ON EACH BOLT WAS STSDR MALA010785Generator · failedDURING FLIGHT NR 3020 AC DID AN AIR RETURN FOR THE RIGHT DC GEN FAILING. WEATHER WAS BAD AT DESTINATION (YWG) SO CREW HAD AC TURN AROUND. AIR RETURN TO MSP. MAINTENANCE REPLACED THE RT DC GENERATOR P/N 23080-031, S/N OFF 96289, S/N ON 96449.SDR CA011123010Generator · failed(CAN) DURING CLIMB OUT OF YQT THE NR 2 GEN O/H LIGHT ILLUMINATED. CHECK LIST C/W. RETURNED TO YQT. NR 2 DC GENERATOR REPLACED.
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