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.
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
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 CALA2014111901469Unknown · malfunctionedAPU IN FLIGHT START UNSUCCESSFUL 2 HOURS AFTER TAKEOFF -39C. FRM 49286. APU BITE SHOWS, NO DATA, ON BOX. RAN APU ON GND, ALL OPERATIONS & INDICATIONS NORMAL. PLACED ON PLACARD FOR ETOPS VERIFICATION. REF LOG PAGE 7956388. SUCCESSFUL START ON FIRST ATTEMPSDR ASAA2014101909429Warning Light · false activationAPU BLUE MAINTENANCE LIGHT ILLUMINATED AFTER START. ACFT GROUNDED. SHUTDOWN APU. PERFORMED SIM FIM 49-60-801, APU BITE, APU OIL SHOWED FULL, NUISANCE MESSAGE - IN FLIGHT START CAP. NOT AFFECTED, MAINTENANCE LIGHT EXTINGUISHED.SDR ASAA2014101709421Warning Light · false activationBLUE MAINTENANCE LIGHT FOR APU ILLUMINATED. ACFT GROUNDED. REF TASK 49-60, TASK 801, FOUND MAINTENANCE MSG 49-91227 "LOW OIL QTY". SHUTDOWN APU FOR 5 MINUTES, RESTARTED APU, RAN BITE CHECK, OIL QTY FULL & NO BLUE MAINTENANCE LIGHT.SDR USAA2014101600003Apu · odorODOR & FUMES DURING BOARDING PROCESS. COMPLAINTS BY CABIN CREW & PAXS. FOUND ODOR TO BE FROM APU. R & R APU IAW JC 26L31049003. OPS GOOD.SDR DXTA2014100905908Apu · odorTHERE IS A BAD MUSTY ODOR COMING FROM THE A/C PACKS WHEN THE APU BLEED IS OPERATING ON THE GROUND. THE ODOR CLEARS AFTER ENGINE START & THE APU IS SHUTDOWN. PERFORMED A PRE-RUN CHECK & FOUND APU OIL LOW, SERVICED APU OIL. GAINED ACCESS TO THE APU BLEED AIR SDR ASAA2014100709325Apu · unknownAPU DID NOT START. TWO ATTEMPTS MADE. FAULT CODE 49-41012. ACFT GROUNDED. PERFORMED FIM TASK 49-40-803. UNABLE TO DUPLICATE PROBLEM . STARTED APU FOUR TIMES IAW AMM 49-11-00-860-801.SDR DXTA2014093005901Apu · failedFOUL ODOR COMING FROM ECS. R & R THE APU ASSEMBLY IAW MM 49-10-01-900-802. OPERATIONS & LEAK CHECKED GOOD. COMPLIED WITH TASK 05-50-00-700-801 CHECK & DECONTAMINATION OF THE AC SYS AFTER POLLUTION. NO DEFECTS NOTED.SDR HNAA2014091900265Apu · smokeWHILE APU IS RUNNING WITH BLEEDS OFF, NOTICED WHITE SMOKE COMING FROM VENT, FROM UNDER APU EXHAUST. AUXILIARY POWER UNIT COMPLIED WITH MAINTENANCE PROCEDURES.SDR HALA2014091600138Warning Light · false activationAPU START SUCCESSFUL. APU FAULT AFTER INFLIGHT START. TROUBLESHOT IAW TSM 49-62-00. CHECKED LUBRICATION, OIL FILTER AND GENERATOR OIL FILTER DIFFERENTIAL PRESSURE INDICATORS. CHECK OK. PERFORMED APU TEST IAW AMM 49-62 TEST OK. INDICATION NORMAL. UNABLE SDR ASAA2014083009008Warning Light · illuminatedFAULT LIGHT ILLUMINATED DURING APU START ATTEMPT AT FL400 SECOND START ATTEMPT AT FL 3200 SUCCESSFUL. ACFT GROUNDED. OPEN.SDR ASAA2014081908894Apu · malfunctionedAPU FIRST ATTEMPT UNSUCCESSFUL WITH FAULT LIGHT ILLUMINATED, RAN QRH CHECKLIST. AFTER 5 MINUTES WAIT, FAULT LIGHT EXTINGUISHED AND SECOND ATTEMPT TO START WAS SUCCESSFUL AT FL 32000. BOTH ATTEMPTS AT 32000. ACFT GROUNDED. ACCOMPLISHED APU CURRENT STATUS ANSDR ASAA2014081508852Apu · unknownAPU DID NOT START, TRIED TWO TIMES. ACFT GROUNDED. APU BITE TEST SHOWS MAINTENANCE MESSAGE 49-15004 AND 49-72104. ACCOMPLISHED FIVE SUCCESSFUL APU STARTS BOTH WITH AND WITHOUT GROUND POWER. ALL STARTS NORMAL. BITE TEST SHOWS NO CURRENT FAULTS AND NO FAULTSSDR DXTA2014072805834Apu · odorSMOKE WAS COMING INTO COCKPIT, WITH APU RUNNING, BLEED AIR ON OR OFF AND WITH ENGINE RUNNING. REMOVED AND REPLACED APU IAW MM 49-10-00. OPS AND LEAK CHECKED GOOD.SDR DXTA2014072305828Apu · failedWITH APU RUNNING & BLEED AIR ON, SMOKE WAS ENTERING CABIN. RAN EACH ENGINE SEPARATELY WITH APU OFF & MECH ONBOARD, CABIN CLEARED & NO SMOKE OR ODOR NOTED. REMOVED AND REPLACED THE APU IAW MM 49-10-00. OPS AND LEAK CHECKED GOOD. RAN APU WITH BLEED AIR ON IN SDR ASAA2014072208647Warning Message · false activationMAINTENANCE MESSAGE 49-37168 ON CURRENT STATUS PAGE. ACFT GROUNDED. VISUALLY INSPECTED APU HARNESS AND AC WIRING. DISCONNECTED AND INSPECTED P22 FCU. MEASURED RESISTANCE PINS 4 TO 5 = 110 OHMS. RECONNECTED P22 AND REACCOMPLISHED APU BITE-FAULT CLEARED.SDR SWIA201438751Cover · crackedAPU COVER IS CRACKED ON TOP CORNER. REPAIRED CRACK ON THE TOP CORNER OF THE APU COVER IAW REO.SDR ASAA2014052107897Warning Light · false activationAPU FAULT LIGHT CAME ON. NO APU ROTATION SHUTDOWN, ACFT GROUNDED. PERFORMED GROUND VERIFICATION IAW FIM TASK 49-40, TASK 803. NO DEFECT NOTED. APU STARTS NORMAL. NO HISTORY 30 DAYS. FIM TASK 49-40TASK 803. PASSED CSS NO APU CAUTION LIGHTS PERFORMED AT FSDR ASAA2014051107769Apu · malfunctionedAPU WILL NOT START. ACFT GROUNDED. ACCOMPLISHED FIM TASK 49-40, TASK 803. STARTED APU SEVERAL TIMES WITH NO CURRENT 49-41012 FAULT. FAULT CORRECTED IAW FIM. CHECKED MAGNETIC DRAIN PLUG. NO DEBRIS NOTED. NO HISTORY ON CURRENT APU.SDR DXTA2014043005748Apu · failedDURING START OF APU WITH BLEEDS ON, COCKPIT FILLED UP WITH THICK SMOKE. ISOLATED APU AND DETERMINED TO BE SOUCE OF SMOKE IN AIR CONDITIONING. REMOVED AND REPLACED APU, SERVICED AS REQUIRED AND OPS CHECKED. OPS AND LEAK CHECKED GOOD. ACCOMPLISHED IAW MM 49-SDR VNAA2014041000009Apu · failedAFTER LANDING, CREW REPORTED SMOKE STARTED COMING IN CABIN AND FLIGHT DECK WHEN APU WAS STARTED AND PACKS WERE TRANSFERRED. DECLARED EMERGENCY AND COMPLIED CHECKLIST. MAINTENANCE TROUBLESHOT, R & R APU ASSY AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SESDR ASAA2014033107383Apu · malfunctionedAPU WOULD NOT START WITH FAULT LIGHT ON GROUND. WAITED FIVE MINUTES AND ATTEMPTED AGAIN, SAME RESULT. ACFT GROUNDED. ACCOMPLISHED FIM 49-40, TASK 805. AC & APU WIRING IS GOOD. NO DEFECTS NOTED. CHANGED APU IGNITION UNIT AS PRECAUTION IAW MM 49-41-31-400-80SDR CA140423006Apu · fire(CAN) APU FIRE AT THE GATE.SDR SWIA201436902Apu · contaminatedSTRONG FUEL ODOR THROUGHOUT CABIN WHEN PITCHING DOWN FOR LANDING. CLEANED RESIDUAL FUEL IN APU CONTAINMENT COMPARTMENT.SDR CA140314012Apu · inoperative(CAN) DURING DESCENT, PASSING THROUGH FL 170 AT AROUND 270 KNOTS, THE CREW ATTEMPTED AN APU START THAT LEAD TO A CYAN "APU SHUTDOWN" CAS MESSAGE. THE CREW SWITCHED THE APU TO THE OFF POSITION WHICH CLEARED THE MESSAGE. APPROXIMATELY 3-4 MINUTES LATER, A SECONSDR CALA2014030390508Unknown · malfunctionedAPU WILL NOT START, SECOND ATTEMPT TO START, NO GOOD. CYCLED APU CONTROL & ECB CB'S NO HELP. OK TO DEFER, APU INOPERATIVE IAW MEL 4910B.SDR ASAA2014021306851Warning Light · false activationAPU MAINTENANCE LIGHT ILLUMINATED. ACFT GROUNDED. PERFORMED APU BITE PROCEDURE IAW TASK 49-60, TASK 801. NO FAULTS NOTED. APU OIL SHOWS FULL. APU OK FOR SERVICE.SDR ASAA2014020706799Warning Light · false activationAPU MAINTENANCE LIGHT ILLUMINATED. ACFT GROUNDED. CONFIRMED APU OIL FULL. CHECKED ALL FAULTS ON CDU. ONLY FAULTS WERE WERE LOW OIL LEVEL. NO OTHER DEFECTS NOTED. STARTED APU, NO FAULT LIGHTS NOTED.SDR ASAA2014020506786Apu · unknownAPU INLET TEMPERATURE SENSOR, T2, HAS SUDDEN INCREASE IN CT5ATP. ACFT GROUNDED,SDR ASAA2014020506785Apu · unknownAPU CT5ATP ABOVE THRESHOLD. ACFT GROUNDED.SDR A6WA201401284054Apu · fireGROUND CREW REPORTED FLAMES FROM APU EXHAUST. OPS CHECKED APU IAW AMM 49-10-00. OPS CHECKED GOOD.SDR ASAA2013122212219Warning Message · illuminatedAPU FAULT LIGHT CAME ON AFTER APU START ATTEMPT AFTER LANDING. WAITED 5 MINUTES IAW QRH, FAULT LIGHT WENT OUT AND APU STARTED NORMALLY. ACFT GROUNDED. NO HISTORY LAST 30 DAYS, APU STARTED NORMALLY, OK FOR CONTINUED SERVICE.SDR DALA13069069218Apu · odorDURING INITIAL CLIMB, STRONG BURNING ODOR DETECTED IN FWD CABIN AND COCKPIT. NO SMOKE. DISSIPATED AFTER ABOUT ONE MINUTE. APU AUTO SHUTDOWN WITH CODE 87. HIGH OIL TEMP SEVERAL MINUTES AFTER SHUTDOWN. OIL TEMPRATURE STILL AT 150 C, 1 MIN PRIOR TO SHUTDOWNSDR ASAA2013111796451Warning Light · illuminatedDURING APU START, FAULT LIGHT ILLUMINATED, FOLLOWED QRH, RESTART SUCCESSFUL. ACFT GROUNDED.SDR DXTA2013111805572Apu · smokeTHE APU WHEN "COLD" WITH AIR SELECTED ON EMITS "SMOKE" INTO CABIN. IT SMELLS LIKE "OILY" EXHAUST. MAINTENANCE SAW SLIGHT SMOKE, APU WAS WARM, AND PRODUCED AND ODOR. INSTALLED DIFFERENT APU. OPS AND LEAK CHECKED GOOD.SDR DXTA2013111405564Apu · odorAIR CONDITIONING SMELLS LIKE DIRTY SOCKS. RAN APU FOR ONE HOUR. VERY WEAK OIL ODOR WHEN BLEED AIR IS FIRST TURNED ON. COMPLIED WITH ENGINE RUN UP AND TURNED ON BLEED AIR, STILL A VERY WEAK OIL ODOR NOTED. REMOVED AND REPLACED APU AND TURBOCOOLER IAW MM 49-1SDR DXTA2013110705560Apu · odorAIR CONDITIONING SYSTEM PRODUCED A DIRTY SOCK ODOR. REMOVED LEFT AND RIGHT WATER SEPARATOR COALESCER BAG AND INSTALLED NEW. COMPLIED WITH CMP 215005 AIR CONDITIONING SYSTEM OPS TEST WITH NO DEFECTS NOTED. THERE IS STILL AN ODOR PRESENT ONLY WHEN THE APU IS RSDR ASAA2013110496297Warning Message · false activationAPU BITE TEST INOPERATIVE, CHECK APU OR ECU INTERFACE MESSAGE DISPLAYED ON CDU. ACFT GROUNDED. CYCLED ACFT POWER, APU BITE BACK TO NORMAL. ACCOMPLISHED APU CURRENT STATUS CHECK & NO FAULTS IN HISTORY. CHECKED NORMAL IAW 49-61-00. NO HISTORY 30 DAYS & SEAMSDR CA140221016Fadec · malfunctioned(CAN) WHILE ON GROUND AN ACFT WAS IN A CLEANING STA GETTING PREPARED FOR THE NEXT FLIGHTS (APU RUNNING), WHEN THE CLEANING AGENTS HEARD A HUGE BANG, SIMULTANEOUSLY THE APU DOORS SEPARATED AND FELL TO THE GROUND. APU FIREWALL, TAIL SECTION AND DOOR DAMAGE FOUNSDR UIEA2013102400534Apu · inoperativeAPU INOPERATIVE. R & R APU IAW 49-11-01-404--085, ADJUSTED AND TESTED IAW 49-11-725-001.SDR ASAA2013102096207Exciter · unknownAPU FAILED TO START. RECEIVED A FAULT LIGHT AND MAINT MESSAGE 49-41180. ACFT GROUNDED. STARTED APU NUMEROUS TIMES SUCCESSFULLY. FAULT CODE DOES NOT REAPPEAR. OPS CHECKED GOOD IAW FIM 49-40, TASK 804. REMOVED AND REPLACED APU IGNITION EXCITER OPS CHECKEDSDR CALA2013101892178Unknown · unknownAPU ABORTS START. GROUND TEST AND OPS CHECK WITH NO FAULTS NOTED.SDR DXTA2013092505520Apu · failedDURING PREFLIGHT, HEARD AN EXPLOSIVE BANG FOLLOWED BY A NOISY APU SHUTDOWN AND IMMEDIATE INFLUX OF THICK SMOKE IN THE ACFT'S INTERIOR. REAR BAY HAD NO SMOKE PRESENT, BUT A LINEMAN OBSERVED SPARKS/FLAMES COMING OUT OF THE APU EXHAUST WHEN EXPLOSION OCCURRED. SDR ASAA2013092296037Unknown · unknownAPU STARTED, AIR OK. NO ELECTRIC, NO FREQ/VOLTS. ACFT GROUNDED. ACCOMPLISHED OPS TEST FOR APU AC GENERATION, TEST PASS REF MM 24-21-00-700-803, STEP E. GROUND VERIFICATION CHECKED GOOD IAW MM 24-21-00-700-803.SDR ASAA2013091095948Electrical Sys · malfunctionedAPU ELECTRICAL INOPERATIVE, PRIOR TO APPLYING ELECTRIAL, GOOD VOLTAGE AND FREQUENCY, THEN ELECTRICAL DROPPED OFF LINE. ACFT GROUNDED. APU ELECTRICAL OPS CHECKED NORMAL.SDR A6WA201309044J030Apu · fireARRIVED AT GATE WITH APU RUNNING, TRANSFER BLEED NOTICED APU DOOR INHIBIT CLOSED AND RPM AT 76 PERCENT, SHUTDOWN APU AND RECEIVED APU FIRE FAIL CAUTION MESSAGE AFTER OBSERVING SMOKE AND FLAMES FROM APU EXHAUST AREA. PUSHED APU FIRE PUSH BUTTON AND APU BOTTLE SDR HNAA2013081900466Apu · odorSTRONG FUEL ODOR IN CABIN. GROUND RAN BOTH NR 1 AND NR 2 ENGINES, NO FUEL ODOR NOTED. VERFIED ODOR COMING FROM APU.SDR ASAA2013081695813Converter · failedAPU FAILED TO START. ACFT GROUNDED. PERFORMED APU BIT. FAULT CODE 49-41250 PRESENT. REMOVED APU START CONVERTER UNIT IAW AMM 49-41-61-000-801 INSTALLED APU START CONVERTER UNIT IAW AMM 49-41-61-400-801 3.F.(1). OPS CK GOOD, REF MM 49-41-61.SDR CALA2013081490446Sensor · faultyAPU BLEED AIR APUC DETECTED LOSS OF ABILITY TO PNEUMATICALLY LOAD APU. REPLACED APU DIFFERENTIAL PRESSURE SENSOR IAW AMM. NO ACTIVE FAULTS AFTER OPS CHECK NOTED.SDR CALA2013081490437Unknown · no testSQUIB TEST BAD ON APU TEST 1 ONLY. TEST 2 FOR APU TESTS CORRECTLY. ONLY TEST 1 FOR THE APU DOES NOT TEST. TEST 1 IS SUPPOSE TO WORK IAW AMM.SDR CALA2013081390409Pressure Sensor · malfunctionedAPU DATA MEMORY MODULE HAS 76 STRAIGHT HITS IN MAT. INSTALLED APU DIFFERENTIAL PRESSURE SENSOR IAW AMM 49-53-04. NO ACTIVE FAULTS AFTER MAT AND OPS CHECK.
Back to JASC 4900