JASC 4930
Service difficulty reports · 1,087
Reports filed under 4930 · APU Engine Fuel and Control, 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 = '4930' 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 = '4930' 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 ASAA2017121322907Fuel Control · faultedAPU CSS START CHECK, FIRST APPEMPT FL360, FAULTED. SECOND ATTEMPT FL360, FAULTED. THIRD ATTEMPT FL 360, PASSED. START PEAK TEMP 980 SIMILAR TO FIRST TWO ATTEMPTS. ACFT GROUNDED. LOGGED FAULT CODE 49-31016 X2 OVERTEMP SHUT DOWN. 49-31168 NUMEROUS FUEL COSDR ASAA2017120422771Fuel Nozzle · malfunctionedAPU CT5ATP EGT TREND DATA SHOWS EGT HAS SHIFTED ABOVE THE MAINTENANCE THRESHOLD OF 593 GROUNDED - YES. REMOVED AND REPLACED 10 EA APU FUEL NOZZLES AND SHROUDS, OPS AND LEAK CHECKED GOOD REF B737-800 AMM 49-31-14.SDR VNAA2017112611101Fuel Control · leakingCREW REPORTED A STRONG FUEL SMELL ON LANDING AND TAXI, MAINTENANCE FOUND THE APU FUEL CONTROL TO BE LEAKING WHILE THE APU IS OPERATING. DEFERRED THE APU, VERIFIED NO STATIC LEAKS.SDR UIEA2017111602246Fuel Control · malfunctionedAPU INOP, SINGLE PACK SURGING LT OR RT. REMOVED AND INSTALLED NEW FUEL CONTROL UNIT APU IAW AMM 49-31-01. PERFORMED OPS CHECK. OPS CHECK GOOD AT THIS TIME. NO LEAKS AT THIS TIME.SDR UIEA2017110802201Packing · leakingEVIDENCE OF OIL LEAK AT APU BY FUEL CONTROL UNIT ASSY COUPLING. REMOVED AND REPLACED THE PACKING AT THE APU FUEL CONTROL UNIT ASSY IAW AMM 49-31-01. LEAK CHECKED OK.SDR COZA20171103117Fuel Control · failedAPU SHUTDOWN AFTER AN HOUR OF RUN TIME ON THE GROUND. PUT A PRESSURE GAUGE IN THE FUEL LINE BETWEEN THE FUEL CONTROL AND FUEL ATOMIZER. FOUND FUEL PRESSURE AT 25 PSI WITH A REQUIREMENT FOR 50-60 PSI. REMOVED FUEL CONTROL UNIT AND FOUND DRIVE SHAFT SHEARED. SDR VNAA2017102911102Union · leakingCREW REPORTED A FUEL ODOR IN THE CABIN. TIGHTENED AN ELBOW UNION ON THE APU FUEL SHUTOFF VALVE. OPS AND LEAK CHECKED GOOD.SDR UIEA2017102502035Tube · damagedAPU FUEL FEED TUBING FOUND DAMAGED. APU FUEL FEED TUBE WAS REPLACED.SDR IPXA2017102522975Fuel Control · malfunctionedAPU GEN OFF LIGHT, NO RESET INFIGHT TURNBACK, ONE ELECT POWER SOURCE. AHM SHOWS AT 370' APU COULDN'T MAINTAIN 95%. R & R THE APU FUEL CONTROL IAW MM 49-31-01, OPS AND LEAK CHECKED GOOD.SDR P5CA2017101300359Packing · leakingON ARRIVAL, FOUND THE APU FUEL FILTER HOUSING LEAKING. REPLACED THE PACKING ON THE HOUSING, IAW AMM 49-31-04-004-001, AND 49-31-04-404-006. LEAK CHECKED GOOD.SDR UIEA2017101201955Fuel Control · failedAPU QUIT DURING PUSHBACK. APU WAS RESTARTED AND USED FOR 2 NORMAL ENGINE STARTS. REMOVED AND REPLACED THE APU FUEL CONTROL UNIT IAW 49-31-01. OPS CHECKED NORMAL.SDR CALA2017100803535Line · brokenSTRONG OIL ODOR THROUGH OUT COCKPIT AND CABIN, WITH APU BLEED ON. NORMAL WITH BLEED OFF. FOUND A BROKEN LINE ON THE PRIMARY FUEL MANIFOLD. R & R THE PRIMARY FUEL MANIFOLD LINE IAW AMM 49-31-16 OPS CHECKED GOOD.SDR UIEA2017091001626Fuel Control · leakingAPU FUEL FILTER HAS BOLT MISSING AND LEAKING FUEL. REMOVED AND REPLACED APU SURGE VALVE AND FUEL CONTROL. OP CHECKED IAW 49-31-01.SDR UIEA2017091301643Fuel Control · malfunctionedAPU DUCT PRESSURE LOW. CYCLED NO HELP. REMOVED AND REPLACED THE APU FUEL CONTROL IAW 49-31-01 AND APU SURGE VALVE IAW 49-53-01.SDR ASAA2017080921587Shroud · crackedAPU FUEL LINE SHROUD, DRAIN MAST CRACKING AT BASE. INSPECTION FOUND SHROUD CRACKED AT FWD RT BASE. ACFT GROUNDED. REMOVED AND REPLACED APU FUEL LINE SHROUD DRAIN MAST IAW AMM 28-25-07.SDR DXTA2017073006430Shutoff Valve · leakingDURING FLIGHT, CREW SMELLED FUMES IN THE CABIN AND COCKPIT. FUMES SMELLED LIKE OIL OR FUEL WITH THE STRONGEST SOURCE COMING FROM THE AFT PORTION OF THE AIRCRAFT. THIS OCCURRED SEVERAL MINUTES AFTER APU SHUT DOWN. FUMES BEGAN TO DISSIPATE AS THE DESCENT OCCURRSDR UIEA2017072401293Ecu · faultedAPU FAULT EICAS. REMOVED AND REPLACED APU ECU IAW AMM 49-61-05, OPS CHECKED GOOD.SDR HALA2017072400208Actuator · malfunctionedAPU FUEL VALVE FAULT EICAS AND LIGHT ON SHUTDOWN. REMOVED & REPLACED APU SHUTOFF VALVE ACTUATOR IAW AMM 28-25-02, OPS CHECKED GOOD, OK FOR SERVICE.SDR ASAA2017071521390Valve · faultedAPU FAULT LIGHT ON ATTEMPTED START. STAYED ILLUMINATED, NO RESTART ATTEMPTED. ACFT GROUNDED. REMOVED AND REPLACED APU SHUTOFF VALVE IAW AMM 28-25-02, APU OPS CHECKED GOOD AND APU CURRENT STATUS SHOWS NO FAULTS. VERIFIED INSTALLED APU SHUTOFF VALVE.SDR WX0A073277Packing · leakingDIRTY SOCK ODOR WHEN APU BLEED IS ON. FUEL CONTROL LEAKING, R & R THE APU FUEL CONTROL PACKING.SDR A6WA201745093Unknown · leakingSTRONG FUEL EXHAUST SMELL INSIDE OF ACFT REF 276650/3 APU FUEL LEAK. MAINTENANCE IS INVESTIGATING SOURCE OF SUSPECTED APU FUEL LEAK.SDR WX0A2017070373269Control Unit · faultySTRONG FUEL SMELL IN CABIN AND COCKPIT. R&R APU CONTROL UNIT.SDR ASAA2017062821223Fuel Control · failedPILOT REPORTS THE APU WOULD NOT START ON FIRST ATTEMPT. FAULT LIGHT ILLUMINATED. APU HAS A HISTORY OF MULTIPLE CSS ATTEMPTS WITH FAULT LIGHT. ACFT GROUNDED. REMOVED AND REPLACED THE APU FUEL CONTROL UNIT IAW AMM 49-31-11. LEAK AND OPS CHECKED GOOD. REMOVESDR ASAA2017062621211Fuel Control · failedPERFORMED CSS ON APU BY DISPATCH RELEASE DIRECTION AND PER FOM 5.1 PAGE 4. FIRST ATTEMPT PRIOR TO TOD AT FL380: NORMAL SEQUENCE UNTIL EGT REACHED 800 DEGREES FOLLOWED BY 'FAULT' LIGHT, WHICH EXTINGUISHED WHEN APU SWITCH WAS MOVED TO 'OFF'. SECOND ATTEMPT ALSO SDR REXA2017062600727Fuel Sys · leakingODOR OF FUEL IN CABIN. NO ABNORMAL ENGINE OR FUEL FLOW INDICATIONS. A PRIOR FLT HAD A FUEL LINE RUPTURE AND FUEL SPILLED ON RAMP. AFTER FURTHER INSP. FOUND FUEL LEAK IN AFT EQUIP BAY FROM APU. REMOVED AND REPLACED THE APU ASSY IAW 200-49-10-00, OPS CHECKESDR UIEA2017061201005Actuator · failedFUEL VALVE INDICATION TEST FAILED. REMOVED AND REPLACED THE APU FUEL SHUTOFF VALVE ACTUATOR IAW AMM 28-25-02, OPS CHECKED OK.SDR UIEA2017060800956Tube · corrodedAPU DRAIN MAST TUBE CORRODED. THE DRAIN MAST TUBE WAS REPLACED IAW MM 49-16-00.SDR UIEA2017060500942Bracket · crackedAPU DRAINMAST, FOUND HOLDING BRACKET CRACKED AND LINE MISSING. THE BRACKET REPLACED AND DRAIN LINE WERE REPLACED IAW AMM 49-16-00, REV 121. LEAK CHECKED IAW AMM 49-11-00, REV 121. FOUND NO LEAKD FOUND.SDR ASAA2017052620900Fuel Control · failedAPU FAULT LIGHT ILLUMINATED ON START. ACFT GROUNDED. PERFORMED APU BITE, IAW AMM 49-61-00, FOUND FAULT CODE 49-31175. FOUND FCU BAD, REF B737-900 FIM 49-32 TASK 805. REMOVED AND REPLACED FCU, IAW AMM 49-31-11. OP CHECKED NORMAL, NO LEAKS NOTED.SDR ASAA2017051020718Fcu · failedCSS FAILED, 3 ATTEMPTED STARTS. FL360, SAT-45 DEGREE. APU WOULD HAVE ATTAINED AN EGT OF 1000 DEGREES BUT FAULT LIGHT WOULD ILLUMINATE AND START WOULD ABORT SEQUENCE. ACFT GROUNDED. PERFORMED APU BITE IAW FIM 49-60 TASK 801. FOUND FAULT CODES 49-31016 AND 49-SDR DALA2017050803720Fuel Control · leakingSMOKE AND FUMES FROM TAIL OF AIRCRAFT AFTER APU START. MAINTENANCE TROUBLESHOT AND FOUND FUEL LEAKING FROM THE FILTER BOWL AND STUDS IN FUEL CONTROL UNIT BENT. REMOVED AND REPLACED FUEL CONTROL PER MM. OPERATION CHECKS GOOD.SDR ASAA2017042920570Flow Divider · failedIAW ACARS CREW REPORTED A CSS FAULT AT FLIGHT LEVEL 380. ACFT GROUNDED. REMOVED AND REPLACED THE APU FUEL FLOW DIVIDER IAW AMM 49-31-15-000-801, & AMM 49-31-15-400-801. NO LEAKS NOTED.SDR ASAA2017042920569Connector · looseAPU INOP, NO ROTATION WITH FAULT LIGHT ON. GROUNDED - YES. APU BITE SHOWS NUMEROUS "NO FLAME SHUTDOWN" MSG 49-41011 AND "FCU RESOLVER CIRCUIT SHOWS BAD" MSG 49-31175. CONFIRMED FAULT, APU NO ROTATION INOP FOLLOWED BY FAULT LIGHT. ACCOMPLISHED FIM 49-32 TASK 80SDR ASAA2017042620543Tube · looseAPU FAULT LIGHT ILLUMINATED DURING APU START ON TAXI-IN. ACFT GROUNDED. REMOVED THE APU FUEL CONTROL UNIT IAW AMM 49-31-11-000-801. AFTER FURTHER INVESTIGATION IT WAS FOUND TO HAVE BEEN REPLACED ON DEFECT TSR908420. REINSTALLED THE APU FUEL CONTROL UNIT, REF SDR ASAA2017042620542Line · looseAPU FAULT ILLUMINATED DURING CSS ATTEMPT AT FL380. QRH RAN, LIGHT EXTINGUISHED IMMEDIATELY WHEN APU START SWITCH TO OFF. SUBSEQUENT START ATTEMPT AT FL 360 SUCCESSFUL. ACFT GROUNDED. APU SUPPLY LINE AT THE FIREWALL INSIDE THE APU COMPARTMENT NOT SUFFICIESDR REXA2017042100537Packing · leakingFUEL ODOR IN THE CABIN AND COCKPIT. DURING INSPECTION, FOUND FUEL LEAKING FROM AN ELBOW ON THE APU FUEL CONTROL UNIT. R & R BOTH PACKINGS ON THE ELBOW IAW AMM 49-10-01.OPS CHECKED APU IAW AMM 49-10-00. ALL LEAK CHECKED GOOD. NO ODOR IN CABIN OR COCKPIT.SDR ASAA2017042020524Fcu · failedAPU HISTORY OF CSS NO STARTS. ACFT GROUNDED. REMOVED AND REPLACED FUEL CONTROL UNIT IAW AMM 49-31-11. OPS CHECKED GOOD.SDR ASAA2017041920491Flow Divider · failedAPU STARTED DURING TAXI IN. APU START FAILED. APU FAULT LIGHT ILLUMINATED. RAN QRH. APU FAULT LIGHT WENT OUT AFTER 5 MINUTES 30 SECONDS. ACFT GROUNDED. REMOVED AND REPLACED THE APU FUEL FLOW DIVIDER.SDR UIEA2017041100541Shutoff Valve · inoperativeAPU FAILED TO START. REMOVED AND REPLACED APU FUEL SHUTOFF VALVE IAW AMM 28-25-02. OPS CHECKED NORMAL.SDR ASAA2017040920412Fcu · failedFAULT LIGHT ILLUMINATED DURING APU START ATTEMPT. GROUNDED - YES. PER FIM 49-30 TASK 803. GVI OF COMPRESSOR INLET PLENUM IS GOOD, NO FOD FOUND. REMOVED AND REPLACED FUEL CONTROL UNIT. INSTALLATION TEST IS GOOD. NO LEAKS. APU BITE SHOWS NO FAULTS IAW AMM 49-31-SDR DALA2017041103144Fuel Control · looseFUME, FLIGHT CREW REPORTS A FUEL SMELL IN CABIN AS THE APU WAS STARTED. PASSENGERS DEPLANED. MAINTENANCE FOUND APU FCU FILTER BOWL LOOSE AND LEAKING. RESECURED FILTER. PERFORMED DUCT BURNOUT. NO FURTHER ODOR PRESENT.SDR UIEA2017040400509Wire · shortedDURING APU FUEL VALVE POSITION INDICATION TEST. FUEL VALVE TRIPS THE CIRCUIT BREAKER AND DOES NOT RESET. TROUBLESHOT IAW WDM 28-25-21, FOUND A SHORT AT CONNECTOR D1564, PIN 2. REMOVED & REPLACED THE WIRES W484-302B/R/Y FROM D1564 TO D5700P IAW WDM 28-25-2SDR A6WA201744895B-Nut · looseSTRONG FUEL & EXHAUST ODOR COMING FROM BLEED AIR SYSTEM. STRONGER ODOR IN FLT DECK AND DURING FLT. THIS HAPPENS ON ENGINE AIR AS WELL AS ON APU AIR ONLY. FOUND THE MAIN FEED MANIFOLD CRACKED. FOUND BOTTOM B-NUT OF APU SOLENOID SHUTOFF VALVE LOOSE. SECUREDSDR SIMA20170314001Shutoff Valve · malfunctionedAPU SHUTOFF VALVE OPEN WITH APU OFF. PERFORMED AN OPS TEST OF THE APU FUEL FEED SYSTEM IAW AMM 28-24-00-710-801, OPS TESTED GOOD.SDR A6WA2017031644839Packing · leakingFUEL ODOR IN REAR OF CABIN WITH APU RUNNING, AND BOTH PACKS ON AT GATE. REPLACED THE PACKING FOR THE LT ENGINE FUEL FEED LINE AND REPLACED AC PACK COALESCERS.SDR ASAA2017030119983Fuel Control · failedCSS APU START FAILED DUE TO OVERTEMP TO 1000 DEGREES, RESULTING IN AUTO SHUTDOWN WITH FAULT LIGHT. ACFT GROUNDED. REMOVED & REPLACED THE APU FCU IAW AMM 49-31-11, LEAK CHECKED & GROUND FUNCTIONAL CHECKED NORMAL IAW APU BITE TEST TASK 49-61-00-700-801.SDR UIEA2017022200233Shutoff Valve · leakingDURING POST FLIGHT, DISCOVERED A FUEL LEAK FROM THE LT MAIN WHEEL WELL. FOUND APU FUEL SHUTOFF VALVE LEAKING.SDR A6WA2017022244801B-Nut · leakingDURING DESCENT WITH APU OFF AND BOTH PACKS SELECTED TO AUTO, CREW REPORTED STRONG FUEL ODOR IN CABIN AND COCKPIT. PERFORMED VISUAL INSPECTION OF AFT EQUIPMENT BAY AIR CONDITIONING DUCTS, NO DEFECTS NOTED. FOUND A B-NUT FITTING ON APU FUEL CONTROL UNIT LEAKING SDR AALA201702089011O-Ring · leakingSTRONG ODOR FUEL WHEN APU BLEED TURNED ON. FUEL LEAK FOUND AT APU FUEL FILTER HOUSING. REPLACED APU FUEL FILTER HOUSING O-RING IAW AMM 49-32-41.SDR A6WA201744748Fuel Sys · leakingFUEL LEAKING FROM DRAIN TUBES UNDER APU.
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