# JASC 8097: Engine Starting System Wiring - Type: JASC system/component code (FAA) - ATA chapter: 80 Starting - Title in the code table: ENGINE STARTING SYSTEM WIRING - Service difficulty reports: 117 - FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=70 - Page: https://openairdocs.org/jasc/8097 ## What it covers For reports indicating a problem with wiring specific to the Engine Starting System. ## Service difficulty reports (117, newest 50) - [SDR CALA2026010912831](https://openairdocs.org/sdr/CALA2026010912831), Jan 8, 2026: Boeing 737824. ELEC CONNECTOR. DAMAGED. START VALVE ILUMINATED, NR 1 ENGINE. PILOTS REPORT NR 1 ENGINE START VALVE INDICATION SHOWED OPEN AFTER TAKE OFF. ELECTR (N12221) - [SDR SCNA20251229509](https://openairdocs.org/sdr/SCNA20251229509), Dec 28, 2025: Boeing 7378F2. WIRE HARNESS. BURNED. FOUND WIRE HARNESS TO NR 2 ENG STARTER BURNED. REMOVED AND REPLACED WIRING HARNESS MW0312. REF AMM 71-51-03. WIRING HARN (N829SY) - [SDR 2025FA0000341](https://openairdocs.org/sdr/2025FA0000341), May 2, 2025: Bolkms BK117C2. TERMINAL BLOCK. FAILED. PATIENT ONBOARD FOR DEPARTURE #2 ENGINE WOULD NOT START. FOUND A BAD TERMINAL BOARD AND BUS TIE RELAY. (N140SF) - [SDR NACA2025010300001](https://openairdocs.org/sdr/NACA2025010300001), Jan 3, 2025: Boeing 7673BG. CIRCUIT CARD. FAULTED. R ENGINE STARTER CUTOUT LIGHT ILLUMINATED APPROX 1 MINUTE INTO START PROCEDURE. STAYED ILLUMINATED FOR 5-10 SECONDS THEN (N565NC) - [SDR 2024FA0000271](https://openairdocs.org/sdr/2024FA0000271), Mar 30, 2024: Lear 60LEAR. CONNECTOR. LOOSE. ON 3/30/2024, DEPARTED KMBS WITH PASSENGERS HEADING TO KSAT. ABOUT 20 MINS INTO FLT, CREW NOTICED A FUEL IMBALANCE IN WI (N924PS) - [SDR ASAA2021081535724](https://openairdocs.org/sdr/ASAA2021081535724), Aug 15, 2021: Boeing 737990ER. WIRE HARNESS. FAULTY. LEFT START VALVE OPEN LIGHT ILLUMINATED AFTER START. GROUNDED - YES. (RESOLVED ON W/O: 1877189 TASKCARD: N/R-00002 ) REM (N486AS) - [SDR 9JLA2021080227994](https://openairdocs.org/sdr/9JLA2021080227994), Jul 29, 2021: Raythn HAWKER900XP. TERMINAL. DIRTY. THE FLIGHT CREW REPORTED THAT AFTER STARTING THE NO1 ENGINE THE NO2 ENGINE WOULD NOT START. NO1 ENGINE START SELECT DID (N762JP) - [SDR ASAA2021051734846](https://openairdocs.org/sdr/ASAA2021051734846), May 17, 2021: Boeing 737890. RELAY. FAULTED. AFTER COMMANDING NORMAL ENG SHUTDOWN WITH #1 FUEL CUTOFF #1 ENG FAIL ILLUMINATED ON EGT & OTHER ENG INDICATIONS NORMAL. (N530AS) - [SDR UIEA2021021000278](https://openairdocs.org/sdr/UIEA2021021000278), Feb 6, 2021: Boeing 747481F. WIRE. DAMAGED. MSG - ENG 1 STARTER 71587 FOUND WIRE W6070-025-20 DAMAGE(

IAW SRM 20-30-12 REV 75 AND WDM 80-11-12 REV 27 REPAIRED WIR (N404KZ) - [SDR ASAA2021010733855](https://openairdocs.org/sdr/ASAA2021010733855), Jan 7, 2021: Boeing 737990ER. CONNECTOR. CRACKED. ENGINE NR 2 ESN 658693 START CONTROL VALVE ELECTICAL CONNECTOR CRACKED ON THE MOUNT. GROUNDED-YES. REMOVED AND REPLACED (N459AS) - [SDR ASAA2020110333483](https://openairdocs.org/sdr/ASAA2020110333483), Nov 3, 2020: Boeing 737890. WIRE HARNESS. FAULTED. MAINT CONT REQUEST REVIEW RECENT NR 1 ENGINE START VALVE ISSUES. REPLACE MW0312 ENGINE HARNESS. GROUNDED-YES. REMOVED AN (N593AS) - [SDR UIEA2020101902276](https://openairdocs.org/sdr/UIEA2020101902276), Oct 19, 2020: Boeing 76731K. CONNECTOR. CONTAMINATED. LT START VALVE LIGHT DID NOT ILLUMINATE DURING START, TESTED NORMAL WITH LIGHT TEST, STARTER OPERATES NORMAL. FOUND CONT (N1489A) - [SDR DALA2020093003228](https://openairdocs.org/sdr/DALA2020093003228), Sep 28, 2020: Boeing 767332. RELAY. MALFUNCTIONED. ATO, AT THROTTLE UP DUE TO A RIGHT STARTER CUT OUT EICAS MESSAGE. CORRECTIVE ACTION: PERFORMED IDLE RUN AT 52% N2 THE FA (N1604R) - [SDR UIEA2020092212033](https://openairdocs.org/sdr/UIEA2020092212033), Sep 20, 2020: Boeing 7673S1. WIRE HARNESS. INOPERATIVE. RT START VALVE INOP. REMOVED AND REPLACED RT ENGINE HARNESS, REF AMM 70-50-00. REF START VALVE OPS NORMAL ON ENGINE RUN (N640GT) - [SDR P5CA2020051300158](https://openairdocs.org/sdr/P5CA2020051300158), May 13, 2020: Boeing 7673Y0. CONNECTOR. DIRTY. RIGHT ENGINE START VALVE LIGHT INOP(

TRANSFER TO MDDR 128306 IAW DDG 80-00-01-01, CAT 'C' DUE DATE MAY 23-20.

LP (N642GT) - [SDR UIEA2020051101011](https://openairdocs.org/sdr/UIEA2020051101011), May 10, 2020: Boeing 767306. CONNECTOR. LOOSE. RIGHT STARTER CUTOUT (IN FLIGHT) INTERMITTENT WARNING.(

FOUND CONNECTOR P94 AND D10970 LOOSE AT START VALVE. SECURED C (N1399A) - [SDR UIEA2020032000503](https://openairdocs.org/sdr/UIEA2020032000503), Mar 20, 2020: Boeing 76731A. CONNECTOR. DIRTY. BTB RT ENG STARTER EICAS.(

TRANSFERRED TO MDDR #126030 I.A.W MEL 80-00-02-01, CAT 'C'.

20MAR, BWI, LP 1120039, I (N662GT) - [SDR P5CA2020031900127](https://openairdocs.org/sdr/P5CA2020031900127), Mar 15, 2020: Boeing 767306. CONNECTOR. DAMAGED. FOUND BACKSHELL DAMAGE AT NO. 1 ENG (D10970)(

IAW WDM 80-11-11 REV. 28, SWPM 20-25-12, REV. 73, SWPM 20-61-11 REV. 71, (N647GT) - [SDR ASAA2020022013161](https://openairdocs.org/sdr/ASAA2020022013161), Feb 11, 2020: Boeing 737890. TERMINAL. LOOSE. #2 ENG ON START START VALVE DID NOT AUTO-CLOSE, HAD FLASHING "START VALVE OPEN" DISPLAY. MANUALLY TURNED START SWITCH OF (N512AS) - [SDR ASAA2019100423902](https://openairdocs.org/sdr/ASAA2019100423902), Oct 2, 2019: Boeing 737990ER. RELAY. MALFUNCTIONED. ON SHUTDOWN AT GATE #2 ENGINE EGT SHOWED "ENG FAIL" MOMENTARILY. GROUNDED - YES. PRECAUTIONARY REMOVED AND REPLACED ENGI (N464AS) - [SDR P5CA2019080500161](https://openairdocs.org/sdr/P5CA2019080500161), Aug 5, 2019: Boeing 767306. CONNECTOR. DIRTY. ON LEFT ENGINE START, "LEFT STARTER CUTOUT" MESSAGE AFTER START. AFTER 30 SECONDS, MESSAGE CLEARED WITHOUT CREW ACTION. (N647GT) - [SDR ASAA2019061419691](https://openairdocs.org/sdr/ASAA2019061419691), Jun 11, 2019: Boeing 737890. CONNECTOR. CORRODED. DURING CLIMB, UPPER DISPLAY UNIT ENGINE #2 'START VALVE OPEN' LIGHT AND ASSOCIATED STACK FLASHED CONTINUOUSLY. EVENTUALL (N535AS) - [SDR ASAA2019020528059](https://openairdocs.org/sdr/ASAA2019020528059), Feb 5, 2019: Boeing 737890. CONNECTOR. CONTAMINATED. DURING PUSHBACK NR 1 ENGINE WOULD NOT START NO N2 ROTATION. PACK WAS OFF WITH GOOD DUCT PRESSURE AND STARTER VALVE OPEN (N594AS) - [SDR UIEA2018092002021](https://openairdocs.org/sdr/UIEA2018092002021), Sep 20, 2018: Boeing 767375. CONNECTOR. DIRTY. AFTER SUCCESSFUL ENGINE START T STARTER CUTOUT AND RT ENG STARTER EICAS MESSAGE DISPLAYED. COMPLIED WITH QRH PROCEDURE. (N649GT) - [SDR ASAA2018071725459](https://openairdocs.org/sdr/ASAA2018071725459), Jul 17, 2018: Boeing 737990ER. CONNECTOR. DIRTY. AFTER STARTING NR 1 ENGINE, THE START VALVE OPEN LIGHT REMAINED ILLUMINATED AND STARTED FLASHING. RAN THE QRH PROCEDURE (N483AS) - [SDR HNAA2018071800155](https://openairdocs.org/sdr/HNAA2018071800155), Jul 14, 2018: Emb EMB145LR. WIRE. BROKEN. NR 2 ENGINE FAILED TO START. NO ROTATION. ON APU BLEED. FOUND BROKEN WIRES ON PINS 10 AND 39 ON PNEUMATIC CONTROL PANEL (N632AE) - [SDR ASAA2018061725120](https://openairdocs.org/sdr/ASAA2018061725120), Jun 17, 2018: Boeing 737990ER. CONNECTOR. DIRTY. FOLLOWING ENGINE NR 2 START AND STARTER CUT-OUT, ENGINE NR 2 START VALVE OPEN LIGHT BEGAN FLASHING PRIOR TO STARTING ENG (N419AS) - [SDR UIEA2018051500900](https://openairdocs.org/sdr/UIEA2018051500900), May 15, 2018: Boeing 767375. WIRE HARNESS. DAMAGED. NR 1 ENGINE STARTER CONTROL VALVE, AFT CONNECTOR PLUG THREADS WERE STRIPPED. REMOVED AND REPLACED THE WIRE HARNESS HARNE (N649GT) - [SDR UIEA2018041700719](https://openairdocs.org/sdr/UIEA2018041700719), Apr 17, 2018: Boeing 7673S1. CIRCUIT CARD. NOT REPORTED. THREE HOURS INTO FLIGHT, A LEFT STARTER CUTOUT EICAS MESSAGE ILLUMINATED. REMOVED AND REPLACED THE LT ENGINE ROTARY STAR (N640GT) - [SDR P5CA2018032700057](https://openairdocs.org/sdr/P5CA2018032700057), Mar 25, 2018: Boeing 7673JHF. CONNECTOR. DIRTY. DURING RIGHT ENGINE START, A RT ENGINE STARTER EICAS MESSAGE ILLUMINATED, THEN EXTINGUISHED. CLEARED & SECURED THE ELECT (N643GT) - [SDR UIEA2018032100450](https://openairdocs.org/sdr/UIEA2018032100450), Mar 21, 2018: Boeing 7673S1. CONNECTOR. DIRTY. LEFT ENGINE STARTER CUTOUT EICAS, AFTER ENGINE START. CLEANED THE CONNECTORS ON TH ELEFT ENGINE START VALVE, PERFORMED A (N640GT) - [SDR UIEA2018011800087](https://openairdocs.org/sdr/UIEA2018011800087), Jan 18, 2018: Boeing 767324. CONNECTOR. UNKNOWN. DURING PUSHBACK, THE RIGHT ENGINE START SWITCH WILL NOT ENGAGE IN THE GROUND POSITION. REMOVED THE CONNECTOR ON P94 FROM (N645GT) - [SDR UIEA2017121902415](https://openairdocs.org/sdr/UIEA2017121902415), Dec 18, 2017: Boeing 7673S1. CONNECTOR. DIRTY. AFTER ENGINE START LT STARTER CUT OUT EICAS MESSAGE. REMOVED, CLEANED AND INSPECTED THE CONNECTORS ON THE LT ENGINE STAR (N640GT) - [SDR ASAA2017120222757](https://openairdocs.org/sdr/ASAA2017120222757), Dec 2, 2017: Boeing 737890. CONNECTOR. BROKEN. #2 ENGINE START VALVE CONNECTOR PLU HARNESS MOUNT BROKEN. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE START VALVE REF (N535AS) - [SDR ASAA2017102922367](https://openairdocs.org/sdr/ASAA2017102922367), Oct 29, 2017: Boeing 737890. WIRE HARNESS. FAILED. NR 1 ENGINE START VALVE DID NOT OPEN WHEN ENGINE START SWITCH POSITIONED TO GROUND. NO ROTATION NOTED. GROUNDED - YES. R (N506AS) - [SDR IPXA2017102322891](https://openairdocs.org/sdr/IPXA2017102322891), Oct 20, 2017: Boeing 76734AF. CONNECTOR. DIRTY. DURING START, THE LEFT ENGINE START VALVE DID NOT OPEN. CLEANED THE CONNECTOR ON LT ENGINE STARTER MOTOR AND PERFORMED A (N314UP) - [SDR UIEA2017092501857](https://openairdocs.org/sdr/UIEA2017092501857), Sep 24, 2017: Boeing 767324. CONNECTOR. DAMAGED. EICAS MESSAGE FOR THE LEFT ENGINE START VALVE, STARTER CUT OFF DISPLAYED. INSPECTED THE START VALVE, FOUND PUSH BACK PIN (N645GT) - [SDR UIEA2017092301806](https://openairdocs.org/sdr/UIEA2017092301806), Sep 23, 2017: Boeing 767324. PIN. DAMAGED. INTERMITTENT LEFT ENGINE STARTER CUTOUT EICAS MESSAGE , QRH LIST COMPLETED , VALVE LIGHT WAS OFF. INSPECTED START VALVE, (N645GT) - [SDR 2017FA0000471](https://openairdocs.org/sdr/2017FA0000471), Aug 30, 2017: Cessna 310. RELAY. SHORTED. AIRCRAFT LOST ALL AVIONICS POWER WHILE IN LEVEL FLIGHT, PILOT DECLARED EMERGENCY LANDING AND LANDED AIRCRAFT WITHOUT INC (N3647D) - [SDR HNAA2017081800278](https://openairdocs.org/sdr/HNAA2017081800278), Aug 17, 2017: Dhav DHC8311. CONTACTOR. FAILED. WHEN STARTING NR 2 ENGINE, A BUSS FAULT OCCURED AND ENGINE STARTED. START SWITCH RETURNED TO NEUTRAL. MAIN BATTERY LOAD (N343EN) - [SDR UIEA2017062301053](https://openairdocs.org/sdr/UIEA2017062301053), Jun 20, 2017: Boeing 767306. GROUND WIRE. DISCONNECTED. RIGHT ENGINE START VALVE LIGHT DIDN'T CYCLE DURING ENGINE START. ENGINE STARTED NORMALLY. FOUND GROUND TERMINAL DISCONNE (N1229A) - [SDR ASAA2016100618244](https://openairdocs.org/sdr/ASAA2016100618244), Oct 6, 2016: Boeing 737890. CIRCUIT BREAKER. TRIPPED. NR 2 ENGINE CHANNEL B CIRCUIT BREAKER TRIPPED. ACFT GROUNDED. PERFORMED GVI INSPECTION OF C/B WITH PANEL OPEN. NO DEFECT (N535AS) - [SDR 9JLA2016102010768](https://openairdocs.org/sdr/9JLA2016102010768), Jul 28, 2016: Cessna 560XL. CIRCUIT BOARD. FAILED. THE FLIGHT CREW REPORTED INTERMITTENT TROUBLE WITH THE NR 1 ENGINE NOT STARTING. MAINTENANCE TROUBLESHOT AND FOUND THE S (N560HN) - [SDR HYIA20160701001](https://openairdocs.org/sdr/HYIA20160701001), Jun 24, 2016: Cessna 402C. RELAY. FAILED. PILOT REPORTED "RIGHT STARTER STAYS ENGAGED" MAINTENANCE FOUND RIGHT STARTER RELAY FAILED. REMOVED AND REPLACED RT START (N991AA) - [SDR ASAA2016062417159](https://openairdocs.org/sdr/ASAA2016062417159), Jun 24, 2016: Boeing 737890. CONNECTOR. LOOSE. NR 1 ENGINE WOULD NOT START. ACFT GROUNDED. FOUND START VALVE CONNECTOR PLUG LOOSE. TIGHTENED CONNECTOR PLUG. RAN ENGINE (N584AS) - [SDR ASAA2016012815196](https://openairdocs.org/sdr/ASAA2016012815196), Jan 28, 2016: Boeing 737890. CONNECTOR. LOOSE. NR 1 ENGINE FAILED TO START, NO ROTATION, GOOD DUCT PRESSURE. ACFT GROUNDED. START VALVE CONNECTOR NOT SECURED, SECURED (N536AS) - [SDR IPXA2015071691214](https://openairdocs.org/sdr/IPXA2015071691214), Jul 15, 2015: Boeing 74744AF. CABLE. DAMAGED. STARTER CUTOUT, THREE CAUTION MESSAGES INTERMITTENT. AIR TURNBACK DUE TO NO NR 3 NACELLE ANTI-ICE. REPLACED ECU W10 CABL (N570UP) - [SDR CA150415009](https://openairdocs.org/sdr/CA150415009), Apr 11, 2015: Dhav DHC8301. FEEDER CABLE. BURNED. (CAN) PILOT DEFECT NR 1 ITT WORKED FINE IN THE START UP WITH ALL INDICATIONS BUT WHEN AIRBORNE AND CLIMBING TO 17,000 FT - [SDR ASAA2015032511125](https://openairdocs.org/sdr/ASAA2015032511125), Mar 25, 2015: Boeing 737990ER. CONNECTOR. UNSECURE. NR 1 ENGINE START VALVE LIGHT REMAINED ILLUMIMATED AFTER START. FOLLOWED QRH PROCEDURES. LIGHT STAYED ON, SHUT ENGINE DO (N431AS) - [SDR CA141223006](https://openairdocs.org/sdr/CA141223006), Dec 8, 2014: Cessna 182T. IGNITION SWITCH. BROKEN. (CAN) IGNITION SWITCH COULD BE ROTATED COUNTER CLOCKWISE PAST THE "OFF" POSITION AND ENGAGE THE STARTER. All 117: https://openairdocs.org/jasc/8097/reports.md ## Other codes in chapter 80 - [JASC 8000](https://openairdocs.org/jasc/8000): Engine Starting System (135 reports) - [JASC 8010](https://openairdocs.org/jasc/8010): Engine Cranking (318 reports) - [JASC 8011](https://openairdocs.org/jasc/8011): Engine Starter (1,467 reports) - [JASC 8012](https://openairdocs.org/jasc/8012): Engine Start Valves/Controls (839 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.