JASC 4950
Service difficulty reports · 951
Reports filed under 4950 · APU Bleed Air 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 = '4950' 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 = '4950' 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 RAIA00605039Bleed Air Sys · malfunctionedFLT - 5553 - STL- COCKPIT AND CABIN FILLED WITH SMOKE WHEN PACK NR 1 WAS TURNED OFF DURING PUSH-BACK. MAINTENANCE DEFERRED APU BLEED SYSTEM.SDR DL76G060398Apu · malfunctionedAPU PNEUMATICS QUIT AFTER LEFT ENGINE START. NO FAULTS LISTED ON ANY FLT LEG ON APU ECU. APU AIR OPS NORM SPUN ENGS TO 28 PERCENT AND OPERATED PACKS, ALL NORMAL. CLEARED MCO AND PLACARD REMOVED.SDR DL76L060367Control Valve · stuckAPU AIR INOP AFTER PUSHBACK. FWD TO MCO AND PLAC 49-11-01C. FOUND SURGE CONTROL VALVE STUCK IN THE OPEN POSITIONED. REPLACED SURGE CONTROL VALVE PER AMM. APU AIR NOW READS 40.SDR QXEA200600963Control Valve · leakingDEN - FLIGHT 4299 - AFTER LANDING DURING APU START RECEIVED AN "APU LCV CLSD" CAUTION MESSAGE AND A OIL SMELL IN THE BLEED AIR. REMOVED AND REPLACED APU LOAD CONTROL VALVE IAW AMM TASK 49-51-05-000-801-A01 AND 49-51-05-400-801-A01. OPERATIONAL AND LEAK CHECKSDR CA060318001Apu · odor(CAN) CREW REPORTED SMOKE AFT LAV WARNING MSG ABORTED T/O AND EVACUATED PAX THROUGH MAIN DOOR ON RUNWAY. REPORTED SMELL ONLY, NO VISIBLE SMOKE. SOURCE OF SMOKE SMELL BELIEVED TO BE APU BLEEDS. APU WAS REPLACED IAW AMM. (TC NR 20060318001)SDR DJFA2006218Apu · failedTHE CREW REPORTED THAT THE AUXILIARY POWER UNIT WAS STARTED AFTER EXITING THE RUNWAY IN KHLG AND THE APU BLEED SWITCH WAS OPENED. AFTER PARKING THE AIRCRAFT THE CABIN FILLED WITH WHITE SMOKE. THE CREW SHUT DOWN THE APU. MAINTENANCE ISSUED MEL 49-00-1 FOR THSDR ASMF200601013Bleed Air Sys · malfunctionedAIRCRAFT RETURNED TO PLATFORM AS A CONSEQUENCE OF DURING PUSH BACK, THE BLEED APU WITH 12 PSI INDICATION. THE ENGINES WERE STARTED WITH EXTERNAL PNEUMATIC PLANT IAW MM 49-50-00 AND THE APU REPORT WAS DEFERRED IAW MEL 49-7. AT MEX, THE CDU TEST WAS PERFORMED. SDR MYW2006F00002Valve · stuckDURING DEPARTURE, APU BLEED VALVE CLOSED WITH APU BLEED SWITCH OPEN. TROUBLESHOT SYSTEM. REMOVED AND REPLACED APU BLEED AIR VALVE IAW AMM. OPERATIONAL CHECKED SYSTEM AND LEAK CHECKED NORMAL. RETURNED AIRCRAFT TO SERVICE. (K)SDR ASMF200601005Apu · failedAIRCRAFT RETURNED TO PLATFORM DURING ENGINES STARTING, LOW PNEUMATIC INDICATION PRESSURE IN THE APU. THE ENGINES WERE STARTED WITH EXTERNAL PNEUMATIC PLANT IAW MM 49-50-00 AND THE FAULT CODE 495 031 00 WAS SHOWN. AT MEX, THE FIM PROCEDURE WAS PERFORMED IAW FSDR AALA20050581Valve · inoperativeDEN INFLT T887/09 SEPT SEVERAL MINUTES AFTER ENGINE WAS ON WING ICE, SMOKE WAS PRESENT IN COCKPIT AND CABIN. DIVERTED TO DEN AND LANDED WITHOUT INCIDENT. TURNED ANTI ICE ON AGAIN AND SMOKE REAPPEARED. PRESSURE ABNORMAL LIGHT ILLUMINATED. REPLACED ANTI ICESDR RAIA00508017Warning Light · illuminatedFLT 7975 - IAD - APU BLEED VALVE BLINKING OPEN ON APU BLEED SWITCH. MAINTENANCE DEFERRED THE APU BLEED SYSTEM.SDR QXEA200501081Apu · odorSTRONG ODOR IN AIRCRAFT. MOST NOTICEABLE ON GROUND. RAN BOTH ENGINES WITH APU AIR OFF AND BOTH PACKS OPERATING. ODOR SEEMED TO DISSIPATE. STARTED APU AND RAN BOTH PACKS WITH APU AIR. ODOR SEEMED TO REAPPEAR. APU PLACED ON MEL.SDR 05FDEA01217Hose · leakingMAIN DECK CARGO SMOKE CAME ON DURING CLIMBOUT. RETURNED, LANDED, F/O SMELLED ODOR JUST PRIOR TO MAIN DECK CARGO SMOKE INDICATION AND THE SCENT DISAPPEARED AFTER NR 2 PACK WAS TURNED OFF. FOUND OIL ON BOTH PACK COALESCER BAGS. OIL LEAK AT APU BEING INJESTED SDR C2XA05CL021Bleed Valve · stuckCLE - THE CREW REPORTED A STRONG FUEL ODOR UPON APU START. MAINTENANCE REPLACED THE APU BLEED AIR VALVE AND OPERATIONAL CHECKS WERE GOOD WITH NO FUEL SMELL DURING START.SDR MALA050326Bleed Valve · failedAFTER DEPARTING CVG CREW SELECTED ENGINE AIRS ON. STRONG OIL SMELL WAS NOTED IN THE CABIN AND THE FLIGHT DECK. CREW ISOLATED TO THE NR 4 ENGINE. FLIGHT CONTINUED ON WITHOUT FURTHER INCIDENT. APU BLEED VALVE.SDR 041251Clamp · brokenAPU HAD BEEN RUNNING ON THE GROUND FOR APPROXIMATELY ONE HOUR AND SHUT ITSELF DOWN DUE TO HIGH OIL TEMP AS INDICATED BY (BYTE) LIGHT. VISUAL INSPECTION SHOWED THAT BLEED AIR ELBOW HAD BROKEN OFF OF EXHAUST STACK CLAMP AT THE WELD. RECOMMEND REGULAR VISUAL INSDR ASMF200503024Apu · malfunctionedAIRCRAFT RETURNED TO PLATFORM AS A CONSEQUENCE OF AFTER PUSH BACK, THE RIGHT ENGINE HAD A HOT STARTING PROMOTED BY LOW PRESS FORM THE APU. ENGINES WERE STARTED WITH A GPU AND APU WAS DEFERRED IAW MEL 49-1-2. DURING OVERNIGHT SERVICE, APU WAS TESTED IN BOTH MODSDR C2XA05CL018Bleed Valve · bypassingCLE - THE CREW REPORTED A STRONG FUEL SMELL AFTER THE APU WAS STARTED. MAINTENANCE REMOVED AND REPLACED THE APU BLEED VALVE AND THE OPERATIONAL CHECKS WERE GOOD, AND NO FUEL SMELL WAS DETECTED.SDR 2005FA0000390Duct · damagedWITH APU RUNNING AND AIR SELECTED ON APU BLEED AIR OPENED HOLE IN INSULATION BY CUTTING BACK INSULATION. FOUND HOLE IN WELDED SEAM BETWEEN TO DUCTS (Y) DUCT NOMINCLATURE IS; DUCT ASSY, APU AND GROUND START.SDR 05FDEA00291Butterfly Valve · crackedDURING COMPLIANCE WITH WIC 49C1701 SEQ 267, FOUND APU NR 2 SYSTEM LOW PRESSURE BLEED VALVE BUTTERFLY CRACKED AND WITH MISSING MATERIAL THAT RESULTED TO NR 2 ENGINE CHANGE.SDR A6WA200540023Manifold · chafedSTRONG ODOR OF JET FUEL IS PRESENT WITH PACKS ON WHILE ON GROUND. FOUND APU PRIMARY MANIFOLD CHAFED THROUGH BY STARTER CONTROL VALVE. REPLACED MANIFOLD IAW AMM AND REPOSITIONED CONTROL VALVE. GROUND RAN AND LEAK AND OPS CHECK GOOD. (K)SDR CA050125005Apu · smoke(CAN) AFTER START SEQUENCE AND COMMENCE TAXI, THE CABIN CREW OBSERVED A LIGHT SMOKE COMING THROUGH THE AIR VENT. THE APU WAS SHUTDOWN WHICH SEEMED TO DISSAPATE THE SMOKE. AS A PRECAUTION THE AIRCRAFT RETURNED TO THE GATE AND PASSENGERS DISEMBARKED. MAINTENASDR SIMA200501902Smoke · detectedSMOKE IN CABIN REPORTED BY CREW AFTER APU START. APU PUT ON MEL AT THIS TIME. MAINTENANCE COULD NOT DUPLICATE DISCREPANCY. SEVERAL STARTS WERE PERFORMED WITH NO SMOKE NOTED. MEL WAS RESTORED AND AIRCRAFT WAS RETURNED TO SERVICE. (K)SDR AT0500003Apu · odorAFTER APU START, INTRODUCED APU AIR, SMELLED ACRID PLACTIC SMELL AND CABIN STARTED FILLING WITH SMOKE. RAMP CREW REPORTED SEEING SMOKE AROUND TAIL AND HEARD A LOUD POP. REMOVED AND REPLACED APU.SDR RAIA00411029Oil Cap · looseSYR - SMOKE IN CABIN. MAINTENANCE INSPECTED AND FOUND APU OIL CAP LOOSE. RE-SECURED CAP. CLEANED APU COMPARTMENT OF OIL.SDR SB04139Control Valve · faultyRSW - FLT 1179 - EN ROUTE FROM PIT TO RSW, THE NR 2 ENGINE GENERATOR TRIPPED OFF LINE AND WOULD NOT RESET. CREW STARTED THE APU. THE APU OPERATED NORMALLY UNTIL FINAL APPROACH WHEN THE APU GENERATOR DROPPED OFF LINE. FLIGHT LANDED WITHOUT FURTHER INCIDENT. SDR C2XA04BT080Bleed Valve · faultyCREW REPORTED, FUEL ODOR IN COCKPIT/CABIN FOLLOWING APU START INFLIGHT. MAINTENANCE REMOVED AND REPLACED APU BLEED VALVE IAW EMB 145XR MM 36-12-01, OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.SDR C2XA04CL071Duct · leakingCLE FLIGHT 2899 THE CREW REPORTED A APU FIRE WARNING ON DESCENT AFTER APU START UP. WARNING WENT AWAY AFTER A FEW SECONDS AND APU STARTED NORMALLY. MAINTENANCE INSPECTED AND FOUND A BLEED LEAK OF THE APU BLEED DUCT AT THE FLEX JOINT. THE BLEED DUCT WAS REPLSDR DL757040414Apu · odorFA'S REPORT MUSTY/DUSTY ODOR THROUGHOUT A/C ON DESCENT. PASSENGERS ALSO COMPLAINED. RAN APU OVERNIGHT TO PURGE DUCTS, NO ODOR NOTED.SDR P5CA0401069Bleed Valve · failedAPU BLEED AIR VALVE FAILED ON PUSHBACK ENGINE START. DEFERRED APU BLEED AIR IAW MEL 49-1-1.SDR AUS20040323Duct · leaking(AUS) BURNING ODOR IN CABIN. SUSPECT CAUSED BY APU BLEED AIR DUCT LEAK.SDR SIMA200402301Apu · contaminatedPIT- FLT 4153 - CRWE REPORTED WITH APU RUNNING AND MAINTEANCE ON BOARD THE CABIN AND COCKPIT FILLED WITH SMOKE. CREW SAID IT SEEMED TO BE COMING FROM THE NR 2 PACK. MAINTENANCE RAN THE NR 2 PACK WITH THE APU AND FOUND NO ODOR. SUSPECT ANTI-ICE FLUID ENTEREDSDR C2XA03CL205Servo Valve · faultyIAH FLIGHT 2627 THE CREW REPORTED A STRONG FUEL SMELL IN THE COCKPIT AND CABIN WHEN THE APU WAS STARTED. MAINTENANCE REPLACED THE APU BLEED SERVO CONTROL VALVE. OPERATIONAL CHECKS WERE GOOD.SDR MASA200300490Apu · smokeASH 6499 BFL-PHX, DURING APPROACH WHEN APU BLEEDS SWITCHED ON, SMOKE AND FUMES IN THE COCKPIT. CAPT DECLARED AN EMERGENCY. WHEN APU BLEEDS WERE SWITCHED OFF, SMOKE AND FUMES DISSIPATED. MX CHECKED APU AND BLEED SYSTEM. DEFERRED APU AND CONTINUES OPS 12/18/SDR QXEA200301534Apu · odorPDX FLIGHT 2482 BURNING OIL ODOR IN AIRPLANE WHILE APU IS SUPPLYING BLEED AIR. DEFERRED APU. AIRCRAFT RETURNED TO SERVICE.SDR MWEA030451Valve · inoperativeAUXILIARY POWER UNIT DISAGREE ALERT ON START ATTEMPT AND LOW AIR PRESSURE INDICATED. REMOVED AND REPLACED AUXILIARY POWER UNIT BLEED AIR VAVLE.SDR USAABB03213Sensor · failedBOS - FLT 834 - EN ROUTE PHL-BOS, WITH THE RIGHT IDG ON MEL, THE APU PERFORMED AN AUTO SHUTDOWN. THE FLIGHT CONTINUED TO BS AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE IN BOS REPLACED THE P2 SENSOR. THE APU WAS PROGRAMMED FOR REPLACEMENT FOR AN ON-GOINSDR UPS03M41571Panel · dirtyINSPECTION TYPE:N/A AFTER ENGINE START (ALL 3) APU SHUT DOWN. LOST ENG NR 2 PNEUMATIC BLEED. MX DEF THE WRITE UP AND MANUALLY LOCKED THE NR 2 BLEED VALVE CLOSED. AFTER T/O & CLIMBING OUT PASSING AT 10,000 RECVD AIR SYS 1 PRESSURE LOW LIGHT. LOST THE PRESSUSDR QXEA200301474Filter · odorPDX-ON FLIGHT NUMBER 2310, APU BLEED AIR UNUSEABLE DUE TO FOUL MUSTY ODOR. NO ODOR USING ENGINE BLEED AIR. REMOVED AND REPLACED FUEL FILTER ASSEMBLY. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.SDR RAIA00310271Bleed Valve · failed5693-STL- APU BLEED FAIL MESSAGE. MAINTENANCE REMOVED AND REPLACED APU BLEED VALVE.SDR SWIA200312534Clamp · failedEMERGENCY RETURN TO FIELD AFTER TAKEOFF BECAUSE OF APU FIRE INDICATION. APU FIRE INDICATION REMAINED AFTER APU BOTTLE FIRED. INDICATION WENT OUT WHEN THRUST LEVERS BROUGHT BACK TO ABOUT 60 PERCENT N1. FOUND UPPER CLAMP ON APU LCV FAULTY. REMOVED AND REPLACSDR SWIA200312357Switch · malfunctionedUSING APU BLEEDS, SMOKE ENTERED THE CABIN. SMOKE WENT AWAY WHEN BOTH PACKS WERE TURNED OFF. REMOVED AND REPLACED APU BLEED SWITCH. OPS CHECKS GOOD.SDR RAIA00304130O-Ring · leaking5286 DTW DURING TAKE-OFF NR 1 BLEED LEAK LIGHT CAME ON. MAINTENANCE DEFERRED PER MEL 49-52-2, SUBSEQUENTLY CLEARING DMI BY REPLACING O-RING IN LEFT BLEED LINE.SDR SWAA030647Clamp · looseCABIN WOULD ONLY DESCEND WITH BOTH A/C PACKS IN HIGH POSITION. FOUND CLAMP LOOSE OF APU DUCT AT BS 1016 PRESS BULKHEAD. SECURED CLAMP, NO LEAKS NOTED PER MM.SDR C2XA03CL047Duct · separatedCLE FLIGHT 2032 THE CREW REPORTED ON TAXI RECEIVED A APU BLEED LEAK INDICATION THEN A SMOKE ODOR WAS NOTICED. THE APU WAS SHUTDOWN. MAINTENANCE INSPECTED AND FOUND THE APU BLEED DUCT SEPARATED DOWN STREAM OF THE APU SHUT-OFF VALVE. THE BLEED DUCT ASSEMBLY WSDR RAIA00212371Warning System · activated5305-PIT- APU BLEED VALVE FAULT INDICATION. MAINTENANCE DEFERRED PER MEL 49-52-02.SDR SWIA200211447Shutoff Valve · malfunctionedBLEED AIR WILL NOT SWITCH FROM APU TO ENGINE BLEED AIR IN FLIGHT, THEN VERY HARD TO GET BACK ON APU BLEED. RETURNED TO SLC. REMOVED AND REPLACED APU LOAD CONTROL VALVE IAW MM 49-51-01. RAN APU AND LT AND RT ENGINES. ALL OPS CHECKS GOOD AT THIS TIME.SDR SWIA200211275Control Valve · malfunctionedAPU LOAD CONTROL VALVE WOULD NOT CLOSE AFTER TAKEOFF. RETURNED TO FAT. REMOVED AND REPLACED APU LCV IAW CRJ MM 49-51-01. OPERATIONAL CHECK GOOD AT THIS TIME.SDR SWIA200211212Valve · malfunctionedAPU CAUSES SMOKE IN COCKPIT & CABIN. FOUND LCV NOT OPENING CAUSING SMELL TO COME FROM PACKS. REPLACED APU LCV, OPS CHECK GOOD.SDR AUS20020614Duct · damaged(AUS) BLEED AIR DUCT CORRODED AND HAS A HOLE.
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