(N649GT) - [SDR HALA20241202345](https://openairdocs.org/sdr/HALA20241202345), Dec 1, 2024: Airbus A321271N. CONNECTOR. DAMAGED. ETOPS - APU FAULT ON TAXI OUT BTB. ITEM ALREADY ON DMI, REPLACED AND RESECURED PINS/ JUMP CONNECTORS PER AMM 49-16-00-00 (N208HA) - [SDR NACA2024080500001](https://openairdocs.org/sdr/NACA2024080500001), Aug 5, 2024: Boeing 767323. CONNECTOR. DIRTY. APU FAULT, ATTEMPTED THREE STARTS. REMOVED ECU, CLEANED CONNECTOR, REINSTALLED ECU OPS NORMAL IAW AMM 49-11-00 (N379CX) - [SDR SWAA2024040570941](https://openairdocs.org/sdr/SWAA2024040570941), Apr 4, 2024: Boeing 7377BD. MODULE. ARCED. FOR 2 OR 3 MIN ON DECENT AN ELECTRICAL ARCING SOUND EMINATED FROM THE OVERHEAD PANEL IN THE VICINITY OF THE FUEL & BUS T (N7750A) - [SDR NACA2023110900002](https://openairdocs.org/sdr/NACA2023110900002), Nov 9, 2023: Boeing 7673BG. UNKNOWN. UNKNOWN. FOUND UPPER APU BONDING WIRE MISSING 2 EA. INSTALLED APU UPPER BONDING WIRES 2 EA IAW AMM 49-11-01 (N566NC) - [SDR DXTA2021123154540](https://openairdocs.org/sdr/DXTA2021123154540), Dec 31, 2021: Bombdr BD1001A10. APU. LEAKING. WHEN APU IS OPERATING THERE IS AN OIL SMELL IN CABIN. ON APU DRAIN THERE IS A BLACK OILY STREAK. FOUND OIL STREAK TO BE (N767QS) - [SDR AALA202112127725](https://openairdocs.org/sdr/AALA202112127725), Dec 8, 2021: Boeing 737*. WIRE HARNESS. FAULTY. AIRCRAFT WAS GROUNDED: DURING TAKE OFF ROLL, APU FAULT AND MASTER CAUTION ILLUMINATED. REJECTED TAKEOFF AT APPROXIMATELY (N976NN) - [SDR 9JLA2021112219152](https://openairdocs.org/sdr/9JLA2021112219152), Nov 17, 2021: Cessna 560XL. NONE. NONE. THE FLIGHT CREW REPORTED THAT THE APU DOES NOT RESTART AFTER IT WAS SHUTDOWN. UNTIL MAIN POWER IS TURNED OFF. THE MAINTE (N817BZ) - [SDR 9JLA2021110234478](https://openairdocs.org/sdr/9JLA2021110234478), Oct 26, 2021: Lear 60LEAR. CIRCUIT BREAKER. BROKEN. THE MAINTENANCE TECH REPORTED THAT DURING TROUBLESHOOTING OF APU SYSTEM IT WAS DISCOVERED THAT AN APU CIRCUIT BREAKER ON (N74HT) - [SDR P5CA2021080900293](https://openairdocs.org/sdr/P5CA2021080900293), Aug 6, 2021: Boeing 7673JHF. WIRE HARNESS. DAMAGED. FOUND UPPER EGT HARNESS DAMAGE AT #1 ENG(
IAW AMM 77-21-02-004-012-H00 AND 77-21-02-404-016-H00 REV 132 REMOVED AND RE (N644GT) - [SDR P5CA2021080900294](https://openairdocs.org/sdr/P5CA2021080900294), Aug 6, 2021: Boeing 7673JHF. WIRE HARNESS. DAMAGED. FOUND UPPER EGT HARNESS DAMAGE AT #2 ENG(
IAW AMM 77-21-02-004-012-H00 AND 77-21-02-404-016-H00 REV 132 REMOVED AND RE (N644GT) - [SDR P5CA2021080900296](https://openairdocs.org/sdr/P5CA2021080900296), Aug 6, 2021: Boeing 7673JHF. WIRE HARNESS. DAMAGED. FOUND LOWER EGT HARNESS DAMAGE AT #2 ENG(
IAW AMM 77-21-02-004-012-H00 AND 77-21-404-016-H00 REV 132 REMOVED AND REPLA (N644GT) - [SDR UIEA2021072801640](https://openairdocs.org/sdr/UIEA2021072801640), Jul 27, 2021: Boeing 767306. CAP. LEAKING. APU FAULT INDICATED ON START ATTEMPT. STATUS SCREEN SHOWS ADD OIL(
SERVICED APU OIL IAW 49-27-00. SUSPECT OIL LEAKING (N1321A) - [SDR UIEA2021071501555](https://openairdocs.org/sdr/UIEA2021071501555), Jul 13, 2021: Boeing 767375. WIRE HARNESS. DAMAGED. APU RELIABILITY COLD SOAK START UNSUCCESSFUL, 1ST ATTEMPT - SAT - 53 - FL400 MAX RPM 45% / 2ND ATTEMPT - SAT - 52 - FL40 (N649GT) - [SDR ASAA2021070975308](https://openairdocs.org/sdr/ASAA2021070975308), Jul 7, 2021: Boeing 737890. WIRE HARNESS. FAULTED. APU HAS HISTORY OF AUTO SHUTDOWN WITH NO FLAME AND SPEED SENSOR FAULTS. REMOVE AND REPLACE APU WIRE HARNESS AND SPEED SE (N563AS) - [SDR ASAA2021070735299](https://openairdocs.org/sdr/ASAA2021070735299), Jul 7, 2021: Boeing 737890. CONNECTOR. DIRTY. APU SHUTDOWN AUTOMATICALLY WITH ASSOCIATED FAULT LIGHT DURING TAXI INTO GATE AFTER LANDING. GROUNDED - YES. PERFORMED B7 (N563AS) - [SDR UIEA2021062101395](https://openairdocs.org/sdr/UIEA2021062101395), Jun 20, 2021: Boeing 767316. CIRCUIT BREAKER. TRIPPED. APU INOP(
TRANSFERRED TO MDDR # 148936 IAW ATLAS MEL 49-15-01-01B. NO MX ACTION REQ. PLACARDS INSTALLED. RC 1534Z.
(N1381A) - [SDR UIEA2021060901303](https://openairdocs.org/sdr/UIEA2021060901303), Jun 8, 2021: Boeing 767306. CONNECTOR. DAMAGED. APU AUTO SHUTDOWN APPROX 30 MIN AFTER START, APU FAULT MESSAGE. TROUBLESHOT PER B767 FIM 49-11 TREE 909 GEN FILTER MSG O (N1399A) - [SDR UIEA2021060601275](https://openairdocs.org/sdr/UIEA2021060601275), Jun 6, 2021: Boeing 767306. PIN. RECESSED. APU AUTO SHUT DOWN.(PERFORMED APU CONTROL UNIT BITE TEST., FAULT CODE GEN FILTER ON BITE, REQUIRES FURTHER T/S. LOG 1 (N1399A) - [SDR 9JLA2021060419001](https://openairdocs.org/sdr/9JLA2021060419001), May 21, 2021: Beech 400A. WIRE. BROKEN. THE FLIGHT CREW REPORTED THAT IN-FLIGHT THE RIGHT ELECTRONIC FUEL CONTROL (EFC) ANNUNCIATOR ILLUMINATED. THEY RESET IT P (N602JC) - [SDR ASAA2021042034672](https://openairdocs.org/sdr/ASAA2021042034672), Apr 20, 2021: Boeing 737990ER. CONNECTOR. LOOSE. APU 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. START (N469AS) - [SDR UIEA2021030800491](https://openairdocs.org/sdr/UIEA2021030800491), Mar 7, 2021: Boeing 767324. CONNECTOR. DAMAGED. APU INOP(
DEFER MEL 49-11-01B, MDDR 143512, CAT B, 10MAR21. PLAC INSTALLED.
LP 1273725: T/S IAW WITH FIM 49-11-9 (N645GT) - [SDR UIEA2021020200193](https://openairdocs.org/sdr/UIEA2021020200193), Feb 2, 2021: Boeing 76731K. CONNECTOR. DAMAGED. APU INOPERATIVE/(AUXILIARY POWER UNIT (APU), ER OPERATIONS NOT ALLOWED (NOTIFY DISPATCH) R60. TRANSFERRED TO DMI 141801, (N1489A) - [SDR HNAA2020121400361](https://openairdocs.org/sdr/HNAA2020121400361), Dec 13, 2020: Emb EMB145LR. CONTACTOR. BURNED. PDIS 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 (N638AE) - [SDR P5CA2020112600388](https://openairdocs.org/sdr/P5CA2020112600388), Nov 26, 2020: Boeing 7673Y0. CONNECTOR. SHORTED. APU NO DUCT PSI. TROUBLESHOT WIRING FROM PLUG D4100J PINS 10, 11 TO PLUG D4098P PINS 4, 5. FOUND SHORT TO SHIELD. SPLICE (N642GT) - [SDR DXTA202009254129](https://openairdocs.org/sdr/DXTA202009254129), Sep 25, 2020: Cessna 680A. WIRE. DAMAGED. DURING AND AFTER APU START UP IN FLIGHT WITH APU BLEED OFF WE HAD AN ELECTRICAL SMOKE SMELL COMING FROM THE COCKPIT GASP (N388QS) - [SDR FDEA202009162228](https://openairdocs.org/sdr/FDEA202009162228), Sep 16, 2020: Boeing 7673S2F. GROUND STUD. MELTED. WHILE COMPLYING WITH EA H-4910-F0356148 REVISION A PART 1 DATED SEP 11, 2020 STEP 3, FOUND APU GROUND GD1300-DC ARCHED A (N169FE) - [SDR ASAA2020082093043](https://openairdocs.org/sdr/ASAA2020082093043), Aug 19, 2020: Boeing 737990ER. CONNECTOR. LOOSE. APU FAULT LIGHT ON AFTER ATTEMPTED RESTART. GROUNDED - YES. VERIFIED APU INOP, FAULT CODE 49-15217 (INLET DOOR SWITCH PO (N442AS) - [SDR ASAA2020081073000](https://openairdocs.org/sdr/ASAA2020081073000), Aug 7, 2020: Boeing 737890. WIRE HARNESS. FAULTY. NR 1 ENGINE WOULD NOT START, NO N2 ROTATION. GROUNDED - YES. REPLACED THE APU ENGINE WIRE HARNESS IAW AMM 49-11-01/401. (N531AS) - [SDR ASAA2020073172956](https://openairdocs.org/sdr/ASAA2020073172956), Jul 27, 2020: Boeing 737890. CONNECTOR. NOT SEATED. APU FAILED TO START AFTER LANDING FAULT LIGHT ILLUMINATED FOR 4 MINUTES AND THEN WENT OUT. RAN QRH AND DID NOT TRY A RES (N536AS) - [SDR UIEA2020061401284](https://openairdocs.org/sdr/UIEA2020061401284), Jun 14, 2020: Boeing 767328. WIRE HARNESS. FAILED. APU BLEED INOPERATIVE. REMOVED AND REPLACED APU WIRE HARNESS IAW SWPM 20-10-04. CHECK OF APU PNEU GOOD IAW AMM 49-52-00. (N1499A) - [SDR UIEA2020061091247](https://openairdocs.org/sdr/UIEA2020061091247), Jun 6, 2020: Boeing 74747UF. WIRE. BROKEN. FAULT HISTORY REPORT FOUND APU IGNITION UNIT STUCK ENERGIZED CMC MSG: 49078. IAW FIM 49-11 TASK 879 REV 98 AND WDM 49-11 (N496MC) - [SDR UIEA2020052701119](https://openairdocs.org/sdr/UIEA2020052701119), May 22, 2020: Boeing 76731K. WIRE. SHORTED. APU FAULT AND APU WILL NOT START. PERFORMED IGV PUSH PULL IAW FIM 49-11 FT 718 5 LBS, WITHIN LIMITS. PERFORMED WIRE CHEC (N1373A) - [SDR UIEA2020052001091](https://openairdocs.org/sdr/UIEA2020052001091), May 20, 2020: Boeing 7673S1. CONNECTOR. DIRTY. APU FAULT, NO START(
TRANSFERRED TO MDDR 128562 IAW MEL 49-11-01B, CAT 'B'.
LOG PAGE 1199838: PERFORMED APU BITE (N640GT) - [SDR UIEA2020042700838](https://openairdocs.org/sdr/UIEA2020042700838), Apr 25, 2020: Boeing 767306. CONNECTOR. NOT SEATED. APU OIL QTY INDICATION INOP. RE-SEATED CONNECTOR D4024. OPS CHKS GOOD. CLOSED MDDR 127547. (N1321A) - [SDR UIEA2020041700762](https://openairdocs.org/sdr/UIEA2020041700762), Apr 15, 2020: Boeing 767306. CONNECTOR. DIRTY. APU WILL NOT START, 3 ATTEMPTS.(
TRANSFER TO MDDR 127112 PER MEL 49-11-01A CAT C DUE 25APR20. PLACARD INSTALLED. SD @2 (N1427A) - [SDR AALA202004069016](https://openairdocs.org/sdr/AALA202004069016), Apr 4, 2020: Boeing 737823. FEEDER CABLE. BURNED. AIRCRAFT WAS GROUNDED: FLIGHT REPORTED STRONG ODOR IN CABIN. APU WAS RUNNING. SHUT DOWN APU. FOUND APU GENERATOR T1 FEED (N956NN) - [SDR ASAA2020022413247](https://openairdocs.org/sdr/ASAA2020022413247), Feb 21, 2020: Boeing 737890. WIRE HARNESS. FAILED. FAULT LIGHT ILLUMINATED DURING APU START. GROUNDED - YES. ACCOMPLISHED APU BITE REF B737-800 FIM 49-60 TASK 810 FOUND FA (N597AS) - [SDR ASAA2020021827199](https://openairdocs.org/sdr/ASAA2020021827199), Jan 27, 2020: Boeing 737890. WIRE HARNESS. FAILED. APU CT5ATP EGT HAS SHIFTED ABOVE THE 593 DEGREE THRESHOLD AND REMAINS ABOVE THE 605 THRESHOLD. GROUNDED - YES. REPLACED (N560AS) - [SDR UIEA2019091605509](https://openairdocs.org/sdr/UIEA2019091605509), Sep 14, 2019: Boeing 76731A. CONNECTOR. DIRTY. APU BLEED VALVE WOULD NOT OPEN FOR ENGINE START. CLEANED CONNECTOR. OPS CHECKED VALVE PER AMM 49-53-00, OPS CHECK GOOD. (N662GT) - [SDR AALA201909129002](https://openairdocs.org/sdr/AALA201909129002), Sep 10, 2019: Airbus A321231. TERMINAL. BURNED. AIRCRAFT WAS GROUNDED: PILOT REPORTS APU WONT START. MAINTENANCE FOUND POSITIVE CABLE AT APU STARTER BURNT OFF. PULLED C (N128AN) - [SDR QXEA2019081900319](https://openairdocs.org/sdr/QXEA2019081900319), Aug 19, 2019: Bombdr DHC8402. WIRE. BURNED. ON PREFLIGHT FO NOTICED A BURN WIRE INSIDE THE NOSE COMPARTMENT. THE IS ON THE TOP RIGHT SIDE OF THE BOX THAT HAS ALL TH (N412QX) - [SDR CA191021022](https://openairdocs.org/sdr/CA191021022), Jul 26, 2019: Cndair CL6002B19. WIRE. BURNED. (CAN) MAINTENANCE PERSONNEL FOUND EVIDENCE OF BURNED WIRES IN JB-5. THESE BURNED WIRES WERE DISCOVERED BY MAINTENANCE WH - [SDR HALA2019072300366](https://openairdocs.org/sdr/HALA2019072300366), Jul 23, 2019: Airbus A330243. CONNECTOR. DIRTY. ETOPS / APU AUTOSHUT DOWN. FOUND FUEL TRIM TANK INLET VALVE INOP PARTIAL OPEN. INSPECTED WIRING ON BACKSHELL, CLEANED RE (N370HA) - [SDR AALA201907059022](https://openairdocs.org/sdr/AALA201907059022), Jul 4, 2019: Airbus A320232. ELECTRICAL SYS. FIRE. AIRCRAFT WAS GROUNDED: DUE TO ELECTRICAL FIRE ON APU START DISCHARGED APU FIRE BOTTLE. REMOVED AND REPLACED APU FIRE EXT (N650AW) - [SDR ASAA2019062329827](https://openairdocs.org/sdr/ASAA2019062329827), Jun 23, 2019: Boeing 737890. CONVERTER. FAILED. APU GEN FAILED DURING PUSHBACK. GROUNDED - YES. REMOVED AND REPLACED APU STARTER GENERATOR IAW AMM 49-41-21. COMPLIED WI (N585AS) All 226: https://openairdocs.org/jasc/4997/reports.md ## Other codes in chapter 49 - [JASC 4900](https://openairdocs.org/jasc/4900): Airborne Auxiliary Power Unit (APU) System (1,839 reports) - [JASC 4910](https://openairdocs.org/jasc/4910): APU Cowling/Containment (953 reports) - [JASC 4920](https://openairdocs.org/jasc/4920): APU Core Engine (2,429 reports) - [JASC 4930](https://openairdocs.org/jasc/4930): APU Engine Fuel and Control (1,087 reports) - [JASC 4940](https://openairdocs.org/jasc/4940): APU Start/Ignition System (1,424 reports) - [JASC 4950](https://openairdocs.org/jasc/4950): APU Bleed Air System (949 reports) - [JASC 4960](https://openairdocs.org/jasc/4960): APU Controls (383 reports) - [JASC 4970](https://openairdocs.org/jasc/4970): APU Indicating System (272 reports) - [JASC 4980](https://openairdocs.org/jasc/4980): APU Exhaust System (164 reports) - [JASC 4990](https://openairdocs.org/jasc/4990): APU Oil System (2,650 reports) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.