JASC 4900

Service difficulty reports · 1,840

Reports filed under 4900 · Airborne Auxiliary Power Unit (APU) 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 = '4900'
  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.

SDR 96UAL900006Apu · odorWHEN PACKS RAN OFF, APU CABIN HAD BURNT OIL SMELL.Jan 4, 1996 · N7457U · Boeing 727222SDR 95UAL900349Apu · smokingSMOKE IN CABIN AFTER ENGINE START, RETURNED TO GATE. REPLACED APU AND OPERATIONALLY CHECKED NORMAL WITH NO ODOR IN CABIN.Dec 27, 1995 · N410UA · Airbus A320232SDR 9521183221Apu · fireAT THE GATE, SHORTLY AFTER APU SHUTDOWN, SMOKE AND FLAMES WERE NOTICED COMING OUT OF APU EXHAUST DUCT. APU FIRE BOTTLE WAS DISCHARGED AND FIRE EXTINGUISHED. MAINTENANCE INSPECTED THE APU AND SURROUNDING AREA. NO DAMAGE BEYOND APU NOTED. APU PLACED ON MEL.Dec 22, 1995 · N321US · Airbus A320211SDR 9521331150Apu · failedPRIOR TO DEPARTURE, A LARGE CLOUD OF SMOKE DISCHARGED OUT OF APU EXHAUST DUCT. NO UNUSUAL COCKPIT INDICATIONS. APU WAS SHUTDOWN, AT WHICH TIME THE CABIN BEGAN TO FILL WITH SMOKE. PASSENGERS DEPLANED THROUGH MAIN CABIN DOOR WITHOUT INCIDENT. APU PLACED ON MDec 20, 1995 · N150US · Doug DC1040SDR 9520542201Apu Wiring · burnedAT THE GATE WHILE APU WAS RUNNING, THE PILOT NOTICED THE SMELL OF BURNT ELECTRICAL WIRING FOLLOWED BY APU FIRE WARNING LIGHT. THE PILOT PULLED THE FIRE HANDLE AND DISCHARGED THE FIRE BOTTLE. MAINTENANCE CLEANED AND INSPECTED THE WHEEL WELL AREA FINDING BURNTDec 15, 1995 · N201US · Boeing 727251SDR 9520482298Apu · smokingAT GATE, SMOKE BEGAN TO FILL CABIN AND HEAVY SMOKE WAS ALSO OBSERVED COMING FROM RIGHT WHEELWELL AREA. APU SHUT DOWN AND SMOKE CEASED TO ACCUMULATE. PASSENGERS DEPLANED. MAINTENANCE FOUND GLYCOL IN AND AROUND APU EXHAUST DUCT. GLYCOL WAS REMOVED. APU OPERDec 14, 1995 · N298US · Boeing 727251SDR 9520282714Apu · on fireDURING WALK-AROUND, BLUE FLAMES AND SMOKE WERE NOTICED IN THE AREA OF THE APU EXHAUST DUCT. APU SHUTDOWN AND FLAMES SUBSEQUENTLY EXTINGUISHED. NO FIRE BOTTLES WERE USED. MAINTENANCE INSPECTED THE AREA AND FOUND NO DAMAGE. THE APU WAS PLACED ON MEL.Dec 12, 1995 · N718RC · Boeing 7272S7SDR 9520292707Apu · on firePRIOR TO ENGINE START, GROUND PERSONNEL NOTICED A FLAME IN THE RIGHT WHEEL WELL AND APU EXHAUST DUCT AREA. THE APU WAS SHUTDOWN USING A FIRE SWITCH AND FLAMES EXTINGUISHED. MAINTENANCE REPLACED THE APU FIRE EXTINGUISHER BOTTLE, CLEANED THE WHEEL WELL AREA ANDec 9, 1995 · N816EA · Boeing 727225SDR DL72S954604Apu · smokingDEPARTURE TIME WITH APU, EITHER PACK PUTS SMOKE IN CABIN. FOUND APU PUTTING SMOKE IN CABIN DEACTIVATED APU PER MEL.Dec 2, 1995 · N541DA · Boeing 727232SDR 9519573223Apu · fireAT THE GATE PRIOR TO PUSHBACK, AIRCRAFT CABIN FILLED WITH SMOKE AND FLAMES WERE REPORTED COMING FROM APU EXHAUST DUCT BY GROUND PERSONNEL. NO FIRE INDICATION IN COCKPIT. APU WAS SHUTDOWN AND APU FIRE BOTTLE DISCHARGED. AIRCRAFT PASSENGERS WERE EVACUATED THRNov 28, 1995 · N323US · Airbus A320211SDR 95UAL900262Gearbox · crackedPUNGENT ODOR/SMOKE IN AIRCRAFT ON ENGINE PNEUMATICS AT HIGH ENGINE POWER. FOUND APU GEARBOX CRACKED AT STARTER PAD STUDS AT ONE AND THREE O'CLOCK POSITIONS (LOOKING AFT). SMOKE ATTRIBUTED TO OIL BEING INTRODUCED INTO PNEUMATIC DUCTING. REMOVED AND REPLACED Nov 15, 1995 · N1843U · Doug DC1010SDR 95FDEA01594Apu · fireGROUND CREW REPORTED, APU W/N LIGHT OFF OR SHUTDOWN, RESIDUAL FUEL IGNITED CAUSING FIRE AND FIRE BOTTLE DISCHARGED. STARTED APU 3 TIMES, OPS CK GOOD. APU SHUTDOWN NORMALLY WITH MASTER SW OR FIRE HANDLE. SUSPECT NO LIGHT ON APU WAS CAUSED BY COLD SOAKED APU.Oct 25, 1995 · N272FE · Boeing 727233SDR CAL950936Actuator · inoperativeFLT NR 0594 - EWR - THE APU AUTO SHUT DOWN IN FLIGHT AND CONTINUED TO WINDMILL 8-10 PERCENT AFTER MASTER SWITCH WAS TURNED OFF. MAINTENANCE REMOVED AND REPLACED BENT NON-RAM DOOR ACTUATOR PER MM 49-10-00. AN OPERATIONAL CHECK WAS PERFORMED AND NO DEFECTS WEROct 18, 1995 · N69803 · Doug DC982SDR 95UAL900133Cooling Assy · packing wornSTRONG OIL SMELL IN AIRCRAFT, BELIEVE COMING FROM APU. REPLACED C-1, STATOR, RING AND COOLING FAN ASSEMBLY.Sep 14, 1995 · N1834U · Doug DC1010SDR UPS804364Apu · malfunctionPILOT REPORTED, A/C DID AIR TURNBACK DUE TO APU AUTO-SHUTDOWN IN FLIGHT. THIS LEFT A/C WITH ONLY ONE OPERATING GENERATOR DUE TO LEFT ENGINE GENERATOR BEING ON DEFERRAL (M-97875). BITE CHECKED APU, FOUND REVERSE FLOW SHUTDOWN FAULT WITH NO LRU FAULTS. REPLACSep 6, 1995 · N422UP · Boeing 75724APFSDR 95ZZZX5897Apu · smokingFLL/ATL - FLT 134 - AFTER STARTING APU, SMOKE/FUMES STARTED TO ENTER THE AFT END OF THE CABIN, SHUT DOWN APU. PLACED ON MEL LOG PAGE NR 3586, ATA 49-01.Aug 15, 1995 · N901VJ · Doug DC932SDR COM11947Relay · malfunctionedDURING PUSH BACK THE AIRCRAFT FILLED WITH SMOKE. APU AUTO SHUT DOWN. INSPECTED APU AND FOUND NO DEFECTS. REPLACED RELAY KO 194 FOR TROUBLESHOOTING.Aug 8, 1995 · N168CA · Emb EMB120RTSDR DL757953250Connector · looseAPU QUIT INFLIGHT WITH APU FAULT LIGHT. NR 2 IDG WAS ON MCO/PLAC AS INOPERATIVE, RETURNED TO ATL. APU EEC FAULTS APU INLET DOOR. REPLACED DOOR ACTUATOR, NO HELP. MANUALLY OPENED DOOR AND RESEATED CANNON PLUG. APU START AND OPERATION NORMAL. NR 2 IDG CONTJul 31, 1995 · N683DA · Boeing 757232SDR MWEA95239Apu · smokingMAINTENANCE REPORTS, SMOKE IN CABIN WITH ONLY APU RUNNING. MAINTENANCE REMOVED AND REPLACED APU. OPS CHECK GOOD, NO SMOKE IN CABIN. RETURNED A/C TO SERVICE.Jul 22, 1995 · N204ME · Doug DC932SDR CAL950610Apu · malfunctionedIAH - FLT 0426 - WHILE OPERATING THE APU WITH THE NR 1 GENERATOR PLACARDED INOPERATIVE, THE APU GENERATOR CONTROL CIRCUIT BREAKER POPPED ON CLIMB-OUT OF IAH. THE CIRCUIT BREAKER WAS RESET AND THE APU VOLTAGE FLUCTUATED FROM 110V TO 115V. THE AIRCRAFT WAS RETUJul 20, 1995 · N17344 · Boeing 7373T0SDR WRLA95034Door · bindingDURING TAXI, CAPTAIN NOTED APU INLET DOOR WOULD NOT CLOSE. CAPTAIN ELECTED TO RETURN TO GATE FOR MAINTENANCE TROUBLE-SHOOTING. AIRCRAFT TAXIED TO GATE WITHOUT FURTHER INCIDENT. MAINTENANCE PERSONNEL TROUBLE-SHOOTING DETERMINED THAT APU INLET DOOR LINKAGE BIJul 17, 1995 · N275WA · Doug MD11SDR SCNA95140Apu · failedWHILE AIRCRAFT WAS TAXIING, THE CABIN FILLED WITH SMOKE. MAINTENANCE FOUND THE APU INTERNALLY FAILED CAUSING SMOKE, IT WAS THEN INTRODUCED INTO THE CABIN THOUGH THE AIRCRAFT PACKS. THE APU WAS REMOVED AND REPLACED AND OPERATIONS CHECKED NORMAL.Jul 2, 1995 · N286SC · Boeing 7272A1SDR USAA950575Gcu · failedCLT - FLT 1170 - CAPTAIN ADVISED THAT THE APU GENERATOR WAS LOST AT APPROXIMATELY 40 MILES OUT OF CLT. FLIGHT RETURNED TO CLT. FLIGHT RETURNED TO CLT AND LANDED WITHOUT INCIDENT. REPLACED GCU. (M)Jun 8, 1995 · N865US · Fokker F28MK0100SDR DL757952254Firewall · damagedDURING HMV, FOUND LOWER VERTICAL FIREWALL HAS DEEP CHAFING MARKS FROM RIDING ON DOOR SAFETY LATCH ON RIGHT DOOR APU COMPARTMENT. REPAIRED PER SRM 53-80-08 FIG 202.May 14, 1995 · N615DL · Boeing 757232SDR COEA9522202Duct · out of positionFLT 7378 - MSY - DURING CRUISE CREW STARTED THE APU FOR BACKUP AFTER NOTICING THEIR BATTERIES WERE DISCHARGING. AFTER THE APU WAS STARTED THE FIRE WARNING ALARM WENT OFF. CREW ELECTED TO DISCHARGE FIRE BOTTLE. AIRCRAFT LANDED IN MSY WITHOUT INCIDENT. MAINTMay 12, 1995 · N222DG · Frchld F27FSDR MZZA9528Apu · failedFLT NR 93827 - CTS - DURING BOARDING, MAIN CABIN FILLED WITH SMOKE, OFF LOADED PASSENGERS. TRACED SMOKE TO FAILED APU. PLACARDED APU INOPERATIVE PER MEL 49-01. RAN ENGINES AND CLEARED CABIN AND PACKS OF RESIDUE. (W)Apr 27, 1995 · N69741 · Boeing 727224SDR 9506335533Apu · failedTHE APU FAILED DURING CRUISE AND RESTART ATTEMPTS WERE UNSUCCESSFUL. THE RIGHT IDG WAS ON MEL, SO THE AIRCRAFT DIVERTED TO ATL. REPLACED THE RIGHT IDG, PERFORMED BITE ON APU, NO FAULTS WERE DETECTED. APU OPERATIONAL CHECK WAS NORMAL.Apr 22, 1995 · N533US · Boeing 757251SDR 95ZZZW574Apu · smokingFLT 3132 - DCA-ORF - PRIOR TO TAKEOFF, SMOKE WAS PRESENT IN THE COCKPIT WITH THE AUXILLIARY POWER UNIT (APU) RUNNING. MEL APU BLEED 49-4. AT RON, CHECKED BOTH AIR CYCLE MACHINES OIL QUANTITY AND AIR CYCLE MACHINE OUTLET DUCTING FOR OIL, NONE FOUND. BOTH OILApr 3, 1995 · N902HA · Dhav DHC7102SDR QXEA9500100Apu · smokingSEE - THE APU SMOKES AND PUTS SMOKE IN THE CABIN. APU WAS PLACED ON MEL REF 49-1 CAT C.Apr 2, 1995 · N452US · Fokker F28MK1000SDR 95UALD10023Apu · malfunctionedPUNGENT ODOR (SMOKE) IN AIRCRAFT ON ENGINE PNEUMATICS AT HIGH ENGINE POWER. REPLACED APU AND ACCOMPLISHED BURNOUT. ALSO REPLACED APU FORWARD MOUNT ACCOUNT RUBBER INSULATOR SPLIT AND HANGING OUT OF MOUNT.Mar 1, 1995 · N1849U · Doug DC1010SDR QXEA9500060Apu · odorPDX - STRONG OIL SMELL IN COCKPIT AND CABIN WHEN USING APU. NO VISIBLE SMOKE. CLEARS UP AFTER APU SHUT DOWN. PLACED APU ON MEL.Feb 27, 1995 · N469US · Fokker F28MK1000SDR ASAA9580014Aux Power Unit · seal leakingPHX - FLT 706 - UPON ARRIVAL, CREW REPORTED CABIN FILLED WITH SMOKE, SHUTDOWN APU AND SMOKE DISSIPATED. INSPECTED APU, FOUND INLET SHAFT SEAL LEAKING. RELEASED ACFT PER MD80 MEL 49-1. SUBSEQUENTLY REPLACED APU. (W)Feb 20, 1995 · N942AS · Doug DC983SDR SWAA950181Apu · smokingAT GATE, SLIGHT SMOKE NOTED IN CABIN AREA. INSPECTED AND DETERMINED THE SMOKE WAS FROM APU. APU WAS DEACTIVATED PER MEL 49-1. OPERATED AC PACKS TO DISSAPATE SMOKE.Feb 15, 1995 · N376SW · Boeing 7373H4SDR 9502382293Apu · fireDURING DE-ICING AT GATE, EXPERIENCED AN APU FIRE WARNING IN THE COCKPIT. THE APU WAS SHUT DOWN AND THE FIRE BOTTLE WAS DISCHARGED. EVIDENCE OF FIRE WAS FOUND, THE FIRE BOTTLE WAS REPLACED AND THE APU WAS PLACED ON MEL. THE APU WAS LATER REPLACED.Feb 12, 1995 · N293US · Boeing 727251SDR 95ZZZX880Apu · oil leakJFK - DURING TAKEOFF, HAD SMOKE IN CABIN. TURNED OFF HIGH PRESSURE BLEED AIR. FOUND APU LEAKING OIL. REPLACED APU, MFG PN 381276-1. APU OPERATION AND LEAK CHECKED NORMAL. CHECK C-1D - 1-30-95 - MCI.Feb 8, 1995 · N916TW · Doug DC982SDR 95ZZZW115Apu · malfunctionedIAD - FLT 469 - WHILE AT THE GATE, EXPERIENCED FUMES AND SMOKE TO A MARGINAL DEGREE DUE TO THE APU. PLACED APU ON MEL 49-1.Jan 27, 1995 · N915VV · Doug DC932SDR ASAA95021Apu · defectivePDX - FLT 506 - AIR TURN BACK. CREW REPORTED SMOKE ODOR IN COCKPIT SHORTLY AFTER TAKEOFF AND LAV SMOKE DETECTOR ACTIVATED. DEPRESSURIZED AIRCRAFT AT 500 FEET AND LANDED WITHOUT INCIDENT. PERFORMED GROUND RUN-UP OF BOTH ENGINES FOR 5 MINUTES WITH BOTH PACKS Jan 15, 1995 · N937AS · Doug DC982SDR 95UALD10006Apu · failedA PUNGENT ODOR WAS NOTICED IN AFT CABIN BY FLIGHT ATTENDANT. DURING CLIMB-OUT GOT STRONGER, WITH RECIRC FANS OFF AND ALL PACKS ON DISSAPATED TO A SLIGHT SMELL. FLIGHT ATTENDANT EYES WATERED. REPLACED APU.Jan 12, 1995 · N1845U · Doug DC1010SDR 95UALD10003Apu · inoperativeDEN - PUNGENT ODOR SMOKE IN AIRCRAFT ON ENGINE PNEUMATICS AT HIGH ENGINE POWER. LAX - CABIN SMELLED OF OIL AFTER AIR CONDITIONING PUT ON WITH APU FOR AIR SOURCE. APU INOP. COMPLIED WITH MEL 49-A. CONTAMINANTS IN SYSTEM. ACCOMPLISHED PACK BURN OUT.Jan 10, 1995 · N1836U · Doug DC1010SDR DL757950081Apu · loose lineDURING CRUISE, HAD RIGHT ENGINE GENERATOR LIGHT, DISCONNECTED GENERATOR PER POM, APU FAILED TO START. DIVERTED TO MSP. SERVICED APU WITH 4 PINTS OF OIL, BITE CHECK, NORMAL. NEXT DAY APU AUTO SHUT DOWN AT FL 350. RT GENERATOR DEFFERRED, DIVERTED ATL. BITE Jan 6, 1995 · N676DL · Boeing 757232
Back to JASC 4900