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 UIEA2018061901187Not Reported · malfunctionedNO DUCT PRESSURE ON THE GROUND WITH APU RUNNING AND ALL ASSOCIATED VALVES OPEN. TRANSFERRED TO MDDR 95360 IAW MEL 49-11-01-01 CAT C EXPIRE 29JUN18.SDR UIEA2018061901194Not Reported · malfunctionedAPU BLEED VALVE INOP. PERFORMED FIM TASK 49-11 FT A04 ALL CHECKS GOOD. RUN APU WITH DUCT PRESSURE NO FAULTS. LEAK CHECKS ALL GOOD.SDR UIEA2018061501159Unknown · malfunctionedAPU DUCT PRESSURE LOW ( 12 PSI ). PERFORMED OPS CHECK ON AIR SUPPLY DISTRIBUTION SYSTEM IAW AMM 49-11-00 OPS CHECK GOOD AT THIS TIME.SDR UIEA2018060701074Check Valve · faultedAPU SHUTDOWN WITH A FAULT LIGHT DURING PREFLIGHT. PERFORMED AN INSPECTION OF THE APU AIR SUPPLY VALVE IAW AMM 36-11-11, FOUND IT FAULTY, REMOVED AND REPLACED THE CHECK VALVE IAW AMM 36-11-11. RAN APU WILL FULL LOAD FOR 30 MINUTES NO FAULTS NOTED.SDR UIEA2018060401031Control Valve · failedAPU SHUTDOWN DURING PRE FLIGHT WITH A FAULT LIGHT. RESTARTED, ALL OTHER OPS NORMAL, INCLUDING APU USE IN FLIGHT. REMOVED AND REPLACED THE SURGE CONTROL VALVE IAW AMM 49-53-01.SDR ASAA2018060624893Actuator · leakingA TRANSIT CHECK REVEALED LIQUID LEAKING FROM APU DRAIN MAST. ACFT GROUNDED. REPLACED APU IGV ACTUATOR IAW AMM 49-52-12-000-801, & 49-52-12-400-801. OPS, LEAK, AND BITE CHECKED GOOD.SDR UIEA201806051020Clamp · brokenAPU PNEUMATIC INOPERATIVE. TROUBLESHOT AND FOUND THE AIR SUPPLY DUCT CLAMP BROKEN.SDR UIEA201806051022Clamp · failedAPU INOPERATIVE. REMOVED AND REPLACED THE PNEUMATIC DUCT CLAMP ON APU PNEUMATIC OUTPUT DUCT AND OPS CHECKED GOOD IAW AMM 36-00-00 .SDR UIEA201805300988Duct · tornTWO SURGE DUCTS WERE FOUND TORN. R & R THE DUCTS IAW AMM 49-50-00, OPS AND LEAK CHECKED NORMAL.SDR UIEA2018052900996Control Valve · faultyAPU AUTO SHUTDOWN. REMOVED AND REPLACED APU SURGE CONTROL VALVE REF AMM 49-53-01 OPS CHECK NORMAL.SDR UIEA201805250945Control Unit · malfunctionedAPU AUTO SHUTDOWN AFTER A SURGE, WITH ONLY ONE PACK RUNNING. REMOVED AND REPLACED THE APU CONTROL UNIT, OPS TESTED GOOD IAW AMM 49-61-05.SDR DALA2018051203243Duct · damagedAPU FAILED INFLIGHT LEFT GEN DEFERRED. EMERGENCY WAS DECLARED. FOUND APU SURGE VALVE DUCT DAMAGE. R&R SURGE VALVE DUCT PER AMM 49-50. R&R NR 1 ENG GENERATOR DRIVE AND CONSTANT SPEED DRIVE PER AMM 24-10. OPS AND LEAK CHK OF ALL OK.SDR UIEA2018051100879Module · malfunctionedAPU INOP ( ER OPERATIONS NOT ALLOWED ). REMOVED AND REPLACED FLOW SENSE MODULE ASSY IAW AMM 49-53-08. LEAK CHECK AND OPS CHECK GOOD DUCT PRESSURE INDICATION 25-30 PSI.SDR UIEA201804250766Pneumatic System · inoperativeAPU NOT SUPPLYING PNEUMATICS.SDR UIEA201804230751Duct · damagedAPU FWD AIR SURGE FLEX DUCT DAMAGED. REMOVED AND REPLACED APU SURGE DUCT IAW AMM 49-53-01 OPS AND LEAK CHECKED GOOD.SDR UIEA2018041800727Transducer · malfunctionedAPU INOPERATIVE. APU DUCT PRESSURE DROPPED OFF. IAW DDG 49-11-01A CAT LOG PAGE 947614 COMPLIED WITH ECM 2018P-529, AND REMOVED AND REPLACED TOTAL PRESSURE TRANSDUCER IAW AMM 49-56-02. APU OPS CHECKED IAW AMM 49-11-00. OPS CHECKED NORMAL.SDR UIEA2018041800733Tube · cloggedDUCT PRESSURE TO LOW FOR START, APU RUNNING, PACKS OF 22PSI ONCE STARTER ENGAGES DROPS TO 8 PSI, N2 MOTORS TO LESS THAN 10%. PERFORMED FIM 49-11 FAULT TREE 977, FOUND DEBRIS IN THE SURGE CONTROL VALVE SUPPLY TUBE. REMOVED THE DEBRIS, NO FURTHER FAULTS FSDR UIEA2018041900740Clamp · damagedAPU PNEUMATIC DUCT LEAKING AROUND CLAMPS. REMOVED AND REPLACED THE APU PNEUMATIC DUCT CLAMP IAW AMM 49-53-01. OPS CHECKED NORMAL.SDR IPXA2018041028439Valve · malfunctionedAPU FAILED IN FLIGHT, THE APU FAULT LIGHT AND EICAS ILLUMINATED. PERFORMED AN APU BITE TEST IAW MM 49-61-05-742-049. REVERSE FLOW PRESENT ON BITE. IAW FIM 49-11-00-815-880-002-2. REMOVED AND REPLACED THE APU SURGE VALVE IAW MM 49-53-01. OPS CHECKED GOODSDR UIEA2018041000649Isolation Valve · malfunctionedNO APU AIR PRESURE WITH APU RUNNING. RESEATING THE CIRCUIT BREAKER CLEARED THE MESSAGE. REACTIVATED CENTER ISOLATION VALVE IAW AMM 36-11-11. PNEUMATIC PRESSURE READS NORMAL.SDR GTIA2018040502560Elbow · contaminatedFUME EVENT AFTER EXTERNAL AIR START. ON INSPECTION OF APU, FOUND THE ELBOW TO HAVE A SMALL EVICENCE OF OIL IAW AMM 49-16-00. PERFORMED A PACK BURN OUT PROCEDURE IAW 71-00-00-810-801-A. APU REMAINS ON DMI FOUND NO EVIDENCE OF ODOR IN CABIN AT THIS TIMESDR UIEA2018040400566Valve · malfunctionedPNEMATIC DUCT PRESSURE LOW DURING ON THE LT ENGINE START. REPLACED THE APU SURGE VALVE IAW AMM 49-53-01-004-001, AND 49-53-01-404-010, REV 123. OPS CHECKED NORMAL.SDR UIEA2018031900436Valve · failedAPU INOPERATIVE. ACCOMPLISHED AN APU BITE IAW FIM 49-11/ 958, FOUND REVERSE FLOW FAULT. ACCOMPLISHED 49-11 FAULT TREE 965. REMOVED AND REPLACED APU SURGE VALVE IAW AMM 49-53-01, OPS CHECKED NORMAL.SDR UIEA2018031600419Valve · failedAPU BLEED AIR DROPS TO 6 PSI WITH PACKS ON. REMOVED AND REPLACED APU VALVE IAW AMM 36-11-10. OPS CHECK GOOD. REMOVED AND REPLACED FLOW MODULE SERIAL 2023, PART 490050 IAW AMM 49-53-00 OPS CHECKS GOOD.SDR GTIA2018031502522Unknown · odorSTRONG ODOR DURING ACTIVATION OF THE APU BLEED. TROUBLESHOT IAW TSM 05-50-00-810-831-A. PERFORMED GVI OF APU COMPARTMENT, NO EVIDENCE OF OIL, COULD NOT DUPLICATE. ACFT OK FOR SERVICESDR GTIA2018031502514Apu · contaminatedPRIOR TO DEPARTURE TURNED ON APU AND ODOR FILLED CABIN AND FLIGHT DECK. PAX AND CREW COMPLAINED OF THE SMELL-IAW TSM 05-50-00 FOUND DE-ICING FLUID AROUND SEAL OF APU INTAKE PLENUM, SUSPECT OF ODOR EVENT. APU BLEED SOURCE OF ODOR ( APU BLEED AIR SUPPLY SYSTEM )SDR AALA201803139025Apu · odorCABIN ODOR, FLIGHT ATTENDANT'S STATED PCP ODOR IN REAR, ROW 22 - 28 WAS THE STRONGEST. FLIGHT DECK VENT OUTLET HAD A DIRTY SOCK ODOR. REMOVED AND REPLACED APU GENERATOR IAW AMM 24-23-51 AND CLEANED APU COMPARTMENT AND INLET AS REQUIRED. OPS AND LEAK CHECKSDR JGVR20180301001Deflector · corrodedBLENDED CORRODED APU COOLING DUCT INLET DEFLECTOR, PERFORMED ULTRA SONIC THICKNESS AND EDDY CURRENT CRACK INSPECTION AND REPORTED TO TEXTRON FOR DISPOSITION. TREATED, PRIMED AND PAINTED AND REINSTALLED PART PER TEXTRON MEMO.SDR UIEA2018022800307Air Duct · tornAPU BLEED, SURGE AIR DUCT TORN. REMOVED AND REPLACED APU BLEED SURGE AIR DUCT IAW AMM 20-11-00.SDR UIEA2018022600282Shutoff Valve · stickingAPU BLEED AIR SHUTOFF VALVE STICKING. REMOVED AND REPLACED APU BLEED AIR SHUTOFF VALVE IAW AMM AMM 36-11-10. NO HELP, ORIGINAL BLEED AIR SHUTOFF VALVE REINSTALLED.SDR UIEA2018022400271Ecu · failedAPU AIR INOPERATIVE. R & R THE ECU IAW AMM 49-61-05. OPS CHECKED GOOD.SDR UIEA2018022200263Valve · malfunctionedAPU INOPERATIVE. REMOVED AND REPLACED APU SURGE VALVE IAW AMM 49-53-01, PERFORMED ENG START & RUN USING APU IAW AMM 71-00-00. BOTH ENGINE STARTS GOOD WITH NO DEFECTS NOTED.SDR GTIA2018022002451Unknown · odorFUME EVENT AT GATE WITH APU BLEED SUPPLYING PACKS.SDR KCSA2018021702Control Valve · malfunctionedCABIN ALTITUDE MASTER WARNING WITH EICAS MESSAGE, LOST CABIN PRESSURE AT 27,000 FEET, PERFORMED AN EMERGENCY DESCENT. REMOVED AND REPLACED APU SURGE CONTROL VALVE IAW AMM 49-53-01. ALL CHECKED GOOD.SDR KCSA2018021703Control Valve · failedCABIN ALTITUDE MASTER WARNING WITH RAPID DESCENT, CLIMBING THROUGH FLIGHT LEVEL 280. REMOVED AND REPLACED APU SURGE CONTROL VALVE IAW AMM 49-53-01. ALL CHECKED GOOD.SDR UIEA2018021900253Ecu · failedAPU NOT SUPPLYING AIR PRESSURE. REMOVED AND REPLACED APU ECU IAW 49-61-05, OPS CHECKED GOOD.SDR IPXA2018012125717Coupling · blownINSPECTION TYPE:ETOPWHILE CHECKING APU OIL FOUND SURGE BLEED DUCT COUPLINGS BLOWN OUT.R&R'D SURGE VALVE DUCT COUPLINGS IN REFERENCE TO AMM 49-53-01. NO LEAKS NOTED AT THIS TIME.SDR UIEA2018011800086Bleed Air Sys · surgesAPU BLEED PRESSURE SURGING. PERFORMED A BITE TEST OF THE APU ECU. NO DEFECTS NOTED IAW AMM 49-61-05. PERFORMED AN OPS TEST OF THE APU. NO DEFECTS NOTED.SDR P5CA2018010900006Bleed Air Sys · inoperativeAPU AIR INOPERATIVE. COMPLIED WITH MAINTENANCE PROCEDURE 36-11-04, APU BLEED VALVE SECURED.SDR AALA201801109004Seal · deformedBURNING PLASTIC ODOR DURING LATER PART OF DECENT DETECTED IN COCKPIT ONLY. ODOR DISAPATED WHEN LEFT PACK WAS SWITCHED OFF. ACCOMPLISHED TROUBLESHOT THE CABIN AIT QUALITY 26L00021001. INSPECTED APU BAY FOUND NO OIL LEAKS FOUND DEFORMED APU INLET SEAL WITH ESDR P5CA2018010900005Bleed Air Sys · inoperativeNO DUCT PRESSURE AVAILABLE ON APU FOR ENGINE START. RESTARTED APU AND OPS CHECKED OK. GOOD FOR SERVICE IAW AMM 49-10-00.SDR P5CA2018010800004Apu · malfunctionedRETURNED DUE TO NO APU AIR FOR START. STARTED APU & VERIFIED APU DUCT PRESSURE SUFFICIENT IAW AMM 49-10-00, OPS NORMAL.SDR UIEA2018010800035Duct · tornAPU SURGE BLEED DUCT TORN. REMOVED AND REPLACED THE DUCT IAW AMM 49-53-01, NO LEAKS DETECTED.SDR UIEA2017123102453Duct · tornAPU SURGE VALVE DUCT TORN. REMOVED AND REPLACED THE DUCT, APU OPS CHECKED GOOD IAW AMM 49-53-01. NO LEAKS DETECTED.SDR UIEA2017121802411Control Valve · failedAPU DUCT PRESSURE DROPPED TO 15 PSI DURING START. REMOVED AND REPLACED SURGE CONTROL VALVE IAW AMM 49-53-01, OPS CHECKED GOOD.SDR UIEA2017121402403Apu · low pressureAPU NOT PRODUCING ENOUGH PRESSURE 15 PSI (<P>RESET APU AND PERFORMED BITE CHECK IAW AMM 49-40-01 OPS CHECK OK </P>)SDR 4VAA20171211010Bleed Air Sys · failedAIRCRAFT AT GATE. AFTER APU BLEED AIR WAS SELECTED ON WITH CROSS BLEED VALVE OPEN, CREW IMMEDIATELY RECEIVED A CROSS BLEED VALVE FAIL MESSAGE. ONE MINUTE LATER THE BLEED APU LEAK MESSAGE APPEARED. CREW FOLLOWED PROCEDURES AND SHUT APU DOWN.
MAINTENANCE FOUNDSDR UIEA2017121102390Duct · rupturedAPU BLEED DUCT COUPLING IS RUPTURED (<P>REMOVED AND REPLACED BLEED DUCT AS PER 49-53-01 OPS CHECK GOOD,LEAK CHECK GOOD , NO DEFECTS NOTED AT THIS TIME </P>)SDR UIEA2017120202340Bleed Air Sys · inoperativeAPU INOP WILL NOT SUPPLY BLEED PRESSURE(<P>REOPENED MDDR 86667 MEL 49-11-01A CAT C DUE 10DEC17</P>)SDR UIEA2017111902258Bleed Valve · defectiveAUTO SHUT DOWN APU SURGE BLEED DOES NOT RESPOND. REPLACED APU SURGE BLEED VALVE IAW AWW 49-53-01.
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