JASC 4997

Service difficulty reports · 226

Reports filed under 4997 · APU System Wiring, 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 = '4997'
  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 DALA2026052603157Wire · arcedAPU STARTER GENERATOR T4 WIRE IS ARCHING AND MELTED THROUGH THE LEAD COVER. REMOVED AND REPLACED APU STARTER GENERATOR IAW B737 AMM 49-41-21. OPS TEST GOOD. (LOG 1606182 - AIRCRAFT WAS GROUNDED).May 21, 2026 · N824DN · Boeing 737932ERSDR DALA2026051302986Terminal · damagedON THE GROUND WHILE ON APU GOT STRONG BURNING SMELL, LOST ELEC POWER. WE SHUT DOWN APU. NO SMOKE OR FIRE INDICATION. T/S FOUND APU TERMINAL DAMAGED. RECIRC FANS AND E/E COMPARTMENT AND CABINS GALLEY OVEN COFFEEMAKER AND LAV HEATERS ALL CHKS GOOD. RAN BOTH ENGIMay 12, 2026 · N887DN · Boeing 737924ERSDR SCNA20260223098Elec Connector · sparksWHEN TROUBLESHOOTING INOP APU, DURING VOLTAGE CHECK OF FIM 49-40 TASK 816 THE WIRE LEAD SPARKED ON CONTACT WITH ELECTRICAL CONNECTOR D11114C SOCKET 55. PART OF THE LEAD FUSED TO THE INSIDE OF THE SOCKET. FORWARD LH FWD CARGO BULKHEAD REMOVED AS WELL AS THE LOFeb 22, 2026 · N804SY · Boeing 7378Q8SDR 2025FA0000783Wire Harness · mismanufacturedWHILE CARRYING OUT WIRING CHKS BETWEEN APU OIL QTY TRANSMITTER & FLUID QTY INDICATOR, IT WAS NOTED THAT TWO WIRES (H347-22-6(WHT) & 347-22-6 (BLU)) HAVE BEEN INCORRECTLY PINNED AT FQI CONNECTOR (082M1P1). WIRE H347-22-6(WHT) IS LOCATED IN PIN 14 INSTEAD OF PINNov 25, 2025 · N221RW · Gulstm GVIIG600SDR UIEA2025021200132Wire Harness · damagedAIR TURN BACK DUE TO APU SHUTDOWN IN FLIGHT. LEFT GENERATOR ON MEL SO APU IS REQUIRED. APU RESTARTED ON 3RD ATTEMPT.(<P>PER ENGINEERING AND MANAGEMENT REQUEST, R/R APU HARNESS WIRE PN: W020-212R-24 IAW WDM 49-14-11-1 AND SWPM 20-25-00 AND SWPM 20-60-00. DUE TOFeb 12, 2025 · N649GT · Boeing 767375SDR HALA20241202345Connector · damagedETOPS - APU FAULT ON TAXI OUT BTB. ITEM ALREADY ON DMI, REPLACED AND RESECURED PINS/ JUMP CONNECTORS PER AMM 49-16-00-003-A OPS CHK OF APU GOOD OK TO REMAIN ON DMI.Dec 1, 2024 · N208HA · Airbus A321271NSDR NACA2024080500001Connector · dirtyAPU FAULT, ATTEMPTED THREE STARTS. REMOVED ECU, CLEANED CONNECTOR, REINSTALLED ECU OPS NORMAL IAW AMM 49-11-00Aug 5, 2024 · N379CX · Boeing 767323SDR SWAA2024040570941Module · arcedFOR 2 OR 3 MIN ON DECENT AN ELECTRICAL ARCING SOUND EMINATED FROM THE OVERHEAD PANEL IN THE VICINITY OF THE FUEL & BUS TRANSFER PANELS. NO STATIC ELECTRICITY NO STATIC AND VISIBLE ON WINDOWS. OZONE SMELL NO ACCOMPANY SOUND<[01] C/W SMOKE/FUMES IN CABIN CONDITIApr 4, 2024 · N7750A · Boeing 7377BDSDR NACA2023110900002Unknown · unknownFOUND UPPER APU BONDING WIRE MISSING 2 EA. INSTALLED APU UPPER BONDING WIRES 2 EA IAW AMM 49-11-01Nov 9, 2023 · N566NC · Boeing 7673BGSDR DXTA2021123154540Apu · leakingWHEN APU IS OPERATING THERE IS AN OIL SMELL IN CABIN. ON APU DRAIN THERE IS A BLACK OILY STREAK. FOUND OIL STREAK TO BE CAUSED BY OIL DRIPS COMING FROM GANG DRAIN FCU MOUNT PAD LOCATION & EJECTOR OVERBOARD EXHAUST DUCT DRAIN. REMOVED PAU INTAKE PLENUM DRAIN Dec 31, 2021 · N767QS · Bombdr BD1001A10SDR AALA202112127725Wire Harness · faultyAIRCRAFT WAS GROUNDED: DURING TAKE OFF ROLL, APU FAULT AND MASTER CAUTION ILLUMINATED. REJECTED TAKEOFF AT APPROXIMATELY 60 KNOTS. RETURNED TO GATE. **SUPPLEMENTAL REPORT FOR AALA202112097725: REPLACED APU WIRE HARNESS PER AMM 49-11-01.** (CLOSED)Dec 8, 2021 · N976NN · Boeing 737*SDR 9JLA2021112219152None · noneTHE FLIGHT CREW REPORTED THAT THE APU DOES NOT RESTART AFTER IT WAS SHUTDOWN. UNTIL MAIN POWER IS TURNED OFF. THE MAINTENANCE VENDOR COMPLETED EXTENSIVE TROUBLESHOOTING AND INSTALLED A WIRE FROM THE APU PCB DISCONNECT (35 JF010) TO THE RIGHT FORWARD PRESSURE BNov 17, 2021 · N817BZ · Cessna 560XLSDR 9JLA2021110234478Circuit Breaker · brokenTHE MAINTENANCE TECH REPORTED THAT DURING TROUBLESHOOTING OF APU SYSTEM IT WAS DISCOVERED THAT AN APU CIRCUIT BREAKER ON THE APU START PANEL WAS FOUND TO BE BROKEN AND WOULD NOT LATCH AND RESET. THE DEFECTIVE CIRCUIT BREAKER WAS REPLACED WITH A NEW BREAKER. OPOct 26, 2021 · N74HT · Lear 60LEARSDR P5CA2021080900293Wire Harness · damagedFOUND UPPER EGT HARNESS DAMAGE AT #1 ENG(<P>IAW AMM 77-21-02-004-012-H00 AND 77-21-02-404-016-H00 REV 132 REMOVED AND REPLACE EGT HARNESS. IAW AMM 77-21-00-715-012-H00 REV 132 PERFORMED TEST, TEST PASSED</P>)Aug 6, 2021 · N644GT · Boeing 7673JHFSDR P5CA2021080900294Wire Harness · damagedFOUND UPPER EGT HARNESS DAMAGE AT #2 ENG(<P>IAW AMM 77-21-02-004-012-H00 AND 77-21-02-404-016-H00 REV 132 REMOVED AND REPLACED EGT HARNESS. IAW AMM -77-21-00-715-012-H00 REV 132 PERFORMED TEST, TEST PASSED</P>)Aug 6, 2021 · N644GT · Boeing 7673JHFSDR P5CA2021080900296Wire Harness · damagedFOUND LOWER EGT HARNESS DAMAGE AT #2 ENG(<P>IAW AMM 77-21-02-004-012-H00 AND 77-21-404-016-H00 REV 132 REMOVED AND REPLACED HARNESS. IAW AMM 77-21-00-715-012-H00 REV 132. PERFORMED TEST, TEST PASSED</P>)Aug 6, 2021 · N644GT · Boeing 7673JHFSDR UIEA2021072801640Cap · leakingAPU FAULT INDICATED ON START ATTEMPT. STATUS SCREEN SHOWS ADD OIL(<P>SERVICED APU OIL IAW 49-27-00. SUSPECT OIL LEAKING PAST OIL FILL CAP. REMOVED AND REPLACE OIL FILL CAP IAW AMM 20-11-00. OPS CKS GOOD.</P>)Jul 27, 2021 · N1321A · Boeing 767306SDR UIEA2021071501555Wire Harness · damagedAPU RELIABILITY COLD SOAK START UNSUCCESSFUL, 1ST ATTEMPT - SAT - 53 - FL400 MAX RPM 45% / 2ND ATTEMPT - SAT - 52 - FL400 MAX RPM 20% / 3RD ATTEMPT - SAT - 52 - FL400 MAX RPM 22%.(<P>NOTED BY MX. APU COLD SOAK CLEARED DUE TO APU INOP. </P> / <P>13JUL21 - LPJul 13, 2021 · N649GT · Boeing 767375SDR ASAA2021070975308Wire Harness · faultedAPU HAS HISTORY OF AUTO SHUTDOWN WITH NO FLAME AND SPEED SENSOR FAULTS. REMOVE AND REPLACE APU WIRE HARNESS AND SPEED SENSOR. ETOPS SIGNIFICANT SYSTEM. ACCOMPLISHMENT OF LISTED MAINTENANCE TASKS WILL AFFECT APU ON DEMAND IN-FLIGHT START CAPABILITY. MEL 49-99A Jul 7, 2021 · N563AS · Boeing 737890SDR ASAA2021070735299Connector · dirtyAPU SHUTDOWN AUTOMATICALLY WITH ASSOCIATED FAULT LIGHT DURING TAXI INTO GATE AFTER LANDING. GROUNDED - YES. PERFORMED B737-800 FIM 49-40 TASK 802 AND 49-60 TASK 801, RESOLVED FAULT CODE 49-61262 PERFORMED FIM 49-60 TASK 817 INSPECTED APU WIRE HARNESS. REMOVED Jul 7, 2021 · N563AS · Boeing 737890SDR UIEA2021062101395Circuit Breaker · trippedAPU INOP(<P>TRANSFERRED TO MDDR # 148936 IAW ATLAS MEL 49-15-01-01B. NO MX ACTION REQ. PLACARDS INSTALLED. RC 1534Z.</P> / <P>STL MX, 21JUN LP 1305947, ITEM M7: TROUBLESHOT APU PER B767 FIM 49-11 FAULT TREE 987. FOUND BREAKER POPPED. RESET BREAKER, OPS CHECK PJun 20, 2021 · N1381A · Boeing 767316SDR UIEA2021060901303Connector · damagedAPU AUTO SHUTDOWN APPROX 30 MIN AFTER START, APU FAULT MESSAGE. TROUBLESHOT PER B767 FIM 49-11 TREE 909 GEN FILTER MSG ON ECU - APU INOP - ITEM PLACED ON DMI 148253 IAW MEL 49-11-01A, CAT C, DUE 19 JUN21. C/W AP-20109, PERFORMED AMM 49-20-00 GVI TASK NO FAULJun 8, 2021 · N1399A · Boeing 767306SDR UIEA2021060601275Pin · recessedAPU AUTO SHUT DOWN.(<P>PERFORMED APU CONTROL UNIT BITE TEST., FAULT CODE GEN FILTER ON BITE, REQUIRES FURTHER T/S. LOG 1485729 ITEM #9: FOUND CONNECTOR P20 PIN 2 RECESSED, PERFORMED FIM 49-11 F/T 998 FOR APU AUTO SHUT DOWN, FOUND RECESSED PIN ON CONNECTOR P20 Jun 6, 2021 · N1399A · Boeing 767306SDR 9JLA2021060419001Wire · brokenTHE FLIGHT CREW REPORTED THAT IN-FLIGHT THE RIGHT ELECTRONIC FUEL CONTROL (EFC) ANNUNCIATOR ILLUMINATED. THEY RESET IT PER THE CHECKLIST, BUT WOULD NOT RESET. RIGHT N1 HAD ASSOCIATED DROP. THE MAINTENANCE VENDOR TROUBLESHOT AND FOUND THE RIGHT ENGINE T-O PROBEMay 21, 2021 · N602JC · Beech 400ASDR ASAA2021042034672Connector · looseAPU WON'T START. GROUNDED - YES. R&R APU INLET TEMP SENSOR REF B737-900 AMM 49-61-31-000-801 AND 49-61-31-400-801. STARTED APU NO START NO HELP. ACCOMP APU BITE PROCEDURE FAULTS SHOWED NO FAILURES FAULT HISTORY SHOWED 5 PAGES FAULT MSG 49-15004 INLET DOOR SHUTApr 20, 2021 · N469AS · Boeing 737990ERSDR UIEA2021030800491Connector · damagedAPU INOP(<P>DEFER MEL 49-11-01B, MDDR 143512, CAT B, 10MAR21. PLAC INSTALLED.</P><P>LP 1273725: T/S IAW WITH FIM 49-11-993 AND WDM 49-14-11. FOUND PUSHED BACK PIN #2 AT J4 ON IGNITOR BOX. OPS CK C/W 49-00-00. THIS CLEARS MDDR 143512. PLAC REMOVED.</P>)Mar 7, 2021 · N645GT · Boeing 767324SDR UIEA2021020200193Connector · damagedAPU INOPERATIVE/(AUXILIARY POWER UNIT (APU), ER OPERATIONS NOT ALLOWED (NOTIFY DISPATCH) R60. TRANSFERRED TO DMI 141801, IAW MEL 49-11-01A, CAT C. REPLACED PIN NR 33 AT CONNECTOR D4111, PER B767 WDM 49-14-11 AND SWPM 20-61-11. OPERATIONS CHECK GOOD, PER B76Feb 2, 2021 · N1489A · Boeing 76731KSDR HNAA2020121400361Contactor · burnedPDIS 638 49-10 2346991 13DEC20 MDT CLOSE. WHEN PILOT TURNED ON HIS APU HE HAD SHED BUS 1 AND 2 OFF LINE FOLLOWED BY APU GEN OFF BUSS AND ELECTRICAL BURNING SMELL. FACT 13DEC20 23:10 MDT. APU LINE CONTACTOR SHOWS SIGNS OF BURN DAMAGE. R & R APU LINE CONTACTDec 13, 2020 · N638AE · Emb EMB145LRSDR P5CA2020112600388Connector · shortedAPU NO DUCT PSI. TROUBLESHOT WIRING FROM PLUG D4100J PINS 10, 11 TO PLUG D4098P PINS 4, 5. FOUND SHORT TO SHIELD. SPLICED NEW SHIELDS AT PLUGS D 4100J PINS 11 AND PLUG D4098 PINS 5, IAW WDM DRAWING NR 47094MM801 AND SWPM 20-25-11. ALL OPERATIONS CHECKS GNov 26, 2020 · N642GT · Boeing 7673Y0SDR DXTA202009254129Wire · damagedDURING AND AFTER APU START UP IN FLIGHT WITH APU BLEED OFF WE HAD AN ELECTRICAL SMOKE SMELL COMING FROM THE COCKPIT GASPERS. AFTER SHUTDOWN OF THE APU THE SMELL WENT AWAY. SIGN OFF. UPON INSPECTION FOUND FOUR WIRES EXHIBITING A BURNED/CHAFED APPEARANCE. DSep 25, 2020 · N388QS · Cessna 680ASDR FDEA202009162228Ground Stud · meltedWHILE COMPLYING WITH EA H-4910-F0356148 REVISION A PART 1 DATED SEP 11, 2020 STEP 3, FOUND APU GROUND GD1300-DC ARCHED AND PARTIALY MELTED. REPLACED BRACKET AND CHECKED GROUNDS GD01298-AC AND GD-1300-DC. REPAIRED LEADS AND OPS CHECKED APU. ALL WORK DONE IAWSep 16, 2020 · N169FE · Boeing 7673S2FSDR ASAA2020082093043Connector · looseAPU FAULT LIGHT ON AFTER ATTEMPTED RESTART. GROUNDED - YES. VERIFIED APU INOP, FAULT CODE 49-15217 (INLET DOOR SWITCH POWER SHOWS HIGH CURRENT), REF B737-900 FIM 49-10 TASK 809. APU BITE SHOWS NO CURRENT FAULTS. FOUND BACKSHELL LOOSE AND WIRE W4726-1003-20Aug 19, 2020 · N442AS · Boeing 737990ERSDR ASAA2020081073000Wire Harness · faultyNR 1 ENGINE WOULD NOT START, NO N2 ROTATION. GROUNDED - YES. REPLACED THE APU ENGINE WIRE HARNESS IAW AMM 49-11-01/401. OPS TESTED GOOD. STARTED THE NR 1 ENG WITH APU BLEED. NR 1 ENGINE STARTED NORMALLY. NO DEFECTS NOTED.Aug 7, 2020 · N531AS · Boeing 737890SDR ASAA2020073172956Connector · not seatedAPU FAILED TO START AFTER LANDING FAULT LIGHT ILLUMINATED FOR 4 MINUTES AND THEN WENT OUT. RAN QRH AND DID NOT TRY A RESTART. GROUNDED - YES. INITIAL EVAL OF APU CONFIRMED NO START. ACCOMPLISHED B737-800 FIM 49-32-TASK 805. ALL RING OUTS GOOD. DURING GVI OF APJul 27, 2020 · N536AS · Boeing 737890SDR UIEA2020061401284Wire Harness · failedAPU BLEED INOPERATIVE. REMOVED AND REPLACED APU WIRE HARNESS IAW SWPM 20-10-04. CHECK OF APU PNEU GOOD IAW AMM 49-52-00.Jun 14, 2020 · N1499A · Boeing 767328SDR UIEA2020061091247Wire · brokenFAULT HISTORY REPORT FOUND APU IGNITION UNIT STUCK ENERGIZED CMC MSG: 49078. IAW FIM 49-11 TASK 879 REV 98 AND WDM 49-11-16 REV 48 AND SSM 49-11-01 REV 48 PERFORMED WIRE CONTINUITY AND INSULATION CHECK. FOUND WIRE W7242-008-20 BROKEN. IAW SWPM 20-30-11 REV 13Jun 6, 2020 · N496MC · Boeing 74747UFSDR UIEA2020052701119Wire · shortedAPU FAULT AND APU WILL NOT START. PERFORMED IGV PUSH PULL IAW FIM 49-11 FT 718 5 LBS, WITHIN LIMITS. PERFORMED WIRE CHECKS PER WDM 49-14-11 PINS A1 AND A2 BOTH ON D408B ARE SHORTED TO SHEILD J9 AND EACH OTHER. FOUND SPLICES SHORTED TO SHIELD AND SPLICES SM12 AMay 22, 2020 · N1373A · Boeing 76731KSDR UIEA2020052001091Connector · dirtyAPU FAULT, NO START(<P>TRANSFERRED TO MDDR 128562 IAW MEL 49-11-01B, CAT 'B'.</P><P>LOG PAGE 1199838: PERFORMED APU BITE PROCEDURES IAW FIM 49-11 FT 958, SH1, BLK1, SH2, BLK2,3, SH3, BLK4,25. NO FAULTS NOTED. REMOVED APU ECU, CLEANED AND INSPECTED CONNECTORS. May 20, 2020 · N640GT · Boeing 7673S1SDR UIEA2020042700838Connector · not seatedAPU OIL QTY INDICATION INOP. RE-SEATED CONNECTOR D4024. OPS CHKS GOOD. CLOSED MDDR 127547.Apr 25, 2020 · N1321A · Boeing 767306SDR UIEA2020041700762Connector · dirtyAPU WILL NOT START, 3 ATTEMPTS.(<P>TRANSFER TO MDDR 127112 PER MEL 49-11-01A CAT C DUE 25APR20. PLACARD INSTALLED. SD @21:42Z</P><P>17APR: LP 1150290, ITEM M5: PERF APU BITE IAW FIM 49-11 FT 987. FOUND MINI FLAG 34 & LRU FAULT. A/C START CIRCUIT PERF FIM 49-11Apr 15, 2020 · N1427A · Boeing 767306SDR AALA202004069016Feeder Cable · burnedAIRCRAFT WAS GROUNDED: FLIGHT REPORTED STRONG ODOR IN CABIN. APU WAS RUNNING. SHUT DOWN APU. FOUND APU GENERATOR T1 FEEDER CABLE WIRE BURNT AT GENERATOR. REPLACED CABLE. RAN ENGINE. NO ODOR NOTED. AC OK FOR SERVICE. SUPPLEMENTAL ACTION SECT 4: INSPECTED FEEDApr 4, 2020 · N956NN · Boeing 737823SDR ASAA2020022413247Wire Harness · failedFAULT LIGHT ILLUMINATED DURING APU START. GROUNDED - YES. ACCOMPLISHED APU BITE REF B737-800 FIM 49-60 TASK 810 FOUND FAULT 49-72104 DATA MODULE CIRCUIT FAILURE AND 49-41011 NO FLAME SHUTDOWN. ACCOMPLISHED GVI OF APU WIRE HARNESS REF FIM 49-70 TASK 807, NO DEFFeb 21, 2020 · N597AS · Boeing 737890SDR ASAA2020021827199Wire Harness · failedAPU CT5ATP EGT HAS SHIFTED ABOVE THE 593 DEGREE THRESHOLD AND REMAINS ABOVE THE 605 THRESHOLD. GROUNDED - YES. REPLACED BRANCHED APU HARNESS AND PERFORMED OPS CHECKS; CHECKS GOOD ON CARD #G1350537. PERFORMED WIRING RESISTANCE CHECKS IAW B737-800 FIM 49-70 TASJan 27, 2020 · N560AS · Boeing 737890SDR UIEA2019091605509Connector · dirtyAPU BLEED VALVE WOULD NOT OPEN FOR ENGINE START. CLEANED CONNECTOR. OPS CHECKED VALVE PER AMM 49-53-00, OPS CHECK GOOD.Sep 14, 2019 · N662GT · Boeing 76731ASDR AALA201909129002Terminal · burnedAIRCRAFT WAS GROUNDED: PILOT REPORTS APU WONT START. MAINTENANCE FOUND POSITIVE CABLE AT APU STARTER BURNT OFF. PULLED CB L42 AND L41 ON PANEL 121VU FOR SAFETY. REPLACED WIRE TERMINALS TO APU STARTER, REPLACED APU STARTER IAW AMM 49-42-51. CONNECTED AND TORQUESep 10, 2019 · N128AN · Airbus A321231SDR QXEA2019081900319Wire · burnedON PREFLIGHT FO NOTICED A BURN WIRE INSIDE THE NOSE COMPARTMENT. THE IS ON THE TOP RIGHT SIDE OF THE BOX THAT HAS ALL THE CIRCUIT BREAKERS FACING FORWARD. APU PLACED ON MEL. FERRIED AIRCRAFT FOR REPAIRS. AIRCRAFT CURRENTLY OUT OF SERVICE.Aug 19, 2019 · N412QX · Bombdr DHC8402SDR CA191021022Wire · burned(CAN) MAINTENANCE PERSONNEL FOUND EVIDENCE OF BURNED WIRES IN JB-5. THESE BURNED WIRES WERE DISCOVERED BY MAINTENANCE WHILE CARRYING OUT INSTRUCTIONS FROM TECH SERVICES VIA A JOB CARD. R/R RELAY K15PA, APU BATT CHG MSG NO LONGER PRESENT AFTER JB5 AND AIRFRAMEJul 26, 2019 · Cndair CL6002B19SDR HALA2019072300366Connector · dirtyETOPS / APU AUTOSHUT DOWN. FOUND FUEL TRIM TANK INLET VALVE INOP PARTIAL OPEN. INSPECTED WIRING ON BACKSHELL, CLEANED REINSTALLED CONNECTOR VLV OPERATION/INDICATION CK'S NORMAL.Jul 23, 2019 · N370HA · Airbus A330243SDR AALA201907059022Electrical Sys · fireAIRCRAFT WAS GROUNDED: DUE TO ELECTRICAL FIRE ON APU START DISCHARGED APU FIRE BOTTLE. REMOVED AND REPLACED APU FIRE EXTINGUISHING BOTTLE (11WF) IAW AMM 26-22-41-0401. OPS TEST NORMAL. ALSO INSPECTED APU AND APU COMPARTMENT IAW AMM 49-00-00-200-001-A. NO DEFJul 4, 2019 · N650AW · Airbus A320232SDR ASAA2019062329827Converter · failedAPU GEN FAILED DURING PUSHBACK. GROUNDED - YES. REMOVED AND REPLACED APU STARTER GENERATOR IAW AMM 49-41-21. COMPLIED WITH FIM 24-21 TASK 820. FOUND BAD START CONVERTER UNIT. REMOVED AND REPLACED START CONVERTER UNIT AND OPS CHECK GOOD IAW AMM 49-41-61 APU BIJun 23, 2019 · N585AS · Boeing 737890
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