# JASC 7697: Engine Control System Wiring

- Type: JASC system/component code (FAA)
- ATA chapter: 76 Engine Controls
- Title in the code table: ENGINE CONTROL SYSTEM WIRING
- Service difficulty reports: 66
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=66
- Page: https://openairdocs.org/jasc/7697

## What it covers

For reports indicating a problem with wiring specific to the Engine Control System.

## Service difficulty reports (66, newest 50)

- [SDR VE7A2026101200226](https://openairdocs.org/sdr/VE7A2026101200226), Oct 5, 2026: Bell 407. SWITCH. FAILED. DURING CRUISE FLIGHT, AIRCRAFT EXPERIENCED A FADEC FAILURE RESULTING IN LANDING OFFSITE AND PERFORMANCE OF A RUN ON LAND (N450PH)
- [SDR AALA202210038317](https://openairdocs.org/sdr/AALA202210038317), Sep 30, 2022: Boeing 737823. WIRE HARNESS. UNSERVICEABLE. AIRCRAFT WAS GROUNDED: DURING CLIMB OUT ABOVE FL200 SUSTAINED ENGINE 2 VIBRATIONS GREATER THAN 4.0 MAX; APPROXIMATELY 4. (N336SR)
- [SDR DALA2021080204350](https://openairdocs.org/sdr/DALA2021080204350), Aug 1, 2021: Airbus A320212. WIRE HARNESS. FAULTED. SHIP 3254 -ATB- PERFORMED AN AIR TURN BACK TO ATL DUE TO RIGHT ENGINE THRUST LEVER DISAGREE MESSAGE. THE RIGHT ENGINE HA (N354NW)
- [SDR HALA2021060100084](https://openairdocs.org/sdr/HALA2021060100084), May 27, 2021: Airbus A330243. CONNECTOR. LOOSE. SHIP 378 - ATB - ENG 1 THRUST LEVER DISAGREE DURING CLIMB AND INTERMITTENT. CORRECTIVE ACTION: TEST OF FADEC AND FOUND M (N378HA)
- [SDR UIEA2019061804521](https://openairdocs.org/sdr/UIEA2019061804521), Jun 11, 2019: Boeing 76731K. CONNECTOR. BROKEN. CONNECTOR D7990P REQUIRES REPLACEMENT DUE TO PIN #5 LOCK MECHANISM BROKEN. REPLACED CONNECTOR D7990P IAW B767 SWPM 70-61 (N1373A)
- [SDR CA190415005](https://openairdocs.org/sdr/CA190415005), Apr 11, 2019: WIRE HARNESS. SHORTED. (CAN) LEFT ENGINE WAS SHUTDOWN DURING APPROACH. THE ENGINE HARNESS WAS FOUND SHORTED IN THE AREA BELOW THE INTERCOOLER. 
- [SDR 2019FA0000097](https://openairdocs.org/sdr/2019FA0000097), Mar 23, 2019: Snias AS350B3. WIRE HARNESS. BROKEN. AIRCRAFT STAYED AT FLIGHT IDLE EVEN AFTER THROTTLE TWIST GRIP WAS ROLLED TO THE IDLE POSITION. FOUND BROKEN WIRES FROM C (N3972A)
- [SDR ASAA2019011027770](https://openairdocs.org/sdr/ASAA2019011027770), Jan 10, 2019: Boeing 737990ER. WIRE HARNESS. DEFECTIVE. WHILE ACCOMPLISHING T/C 78273000 FAULT CODE APPEARED ON NR 1 ENGINE #76-31361, THE START LEVER SIGNALS DISAGREE, LONG TI (N448AS)
- [SDR UIEA2018062701277](https://openairdocs.org/sdr/UIEA2018062701277), Jun 26, 2018: Boeing 767383. WIRE. SHORTED. LEFT ENGINE VALVE ILLUMINATED. T/S PER FIM 76-11 FT805. FOUND SHORT ON WIRE FROM PLUG D4230J TO D4204P PIN 12. REPLACED  (N1511A)
- [SDR HALA2018052900260](https://openairdocs.org/sdr/HALA2018052900260), May 25, 2018: Boeing 767332. CONNECTOR. LOOSE. OPEN - ETOPS SIGNIFICANT SYSTEM - DURING DESCENT W/ BOTH THROTTLES AT IDLE STOPS R ENGINE POWER WAS SIGNIFICANTLY HIGHER (N594HA)
- [SDR CALA2017091103130](https://openairdocs.org/sdr/CALA2017091103130), Sep 11, 2017: Boeing 737824. CIRCUIT BREAKER. OPEN. REVERSE THRUST LEVER HAS LOST MOTION, NO THRUST REVERSER OPERATION FOR NR 2 ENGINE, FOUND CIRCUIT BREAKERS OUT AT GATE.  (N36280)
- [SDR DALA2017020901125](https://openairdocs.org/sdr/DALA2017020901125), Feb 7, 2017: Doug MD88. CONNECTOR. DAMAGED. LEAVING CRUISE AT FL350, RIGHT THROTTLE WAS PHYSICALLY STUCK, UNABLE TO MOVE WITH OR WITHOUT AUTOTHROTTLES ON. AFTER APP (N904DE)
- [SDR CALA2016071195559](https://openairdocs.org/sdr/CALA2016071195559), Jul 8, 2016: Airbus A320232. PIN. DAMAGED. ENGINE THRUST LEVER DISAGREE ECAM DISPLAYED. REPLACED PINS ON J1 CONNECTOR. PIGGY BACK WIRES J7 AT EEC TO FIREWALL CONNE (N431UA)
- [SDR HNAA2016012200016](https://openairdocs.org/sdr/HNAA2016012200016), Jan 22, 2016: Dhav DHC8102. WIRE. BROKEN. AUTOFEATHER WILL NOT ARM. FOUND BROKEN WIRE AT NR 1 ENGINE POWER LEVER MICROSWITCH TERMINAL. RESOLDERED WIRE TERMINAL, P (N938HA)
- [SDR CA151229016](https://openairdocs.org/sdr/CA151229016), Dec 26, 2015: Lear 35A. CABLE. BROKEN. (CAN) AIRCRAFT ENTERED RUNWAY FOR A NORMAL TAKEOFF, UPON APPLICATION OF TAKEOFF POWER THE CREW NOTED THAT THE LT THRUST 
- [SDR DJFA20151120002](https://openairdocs.org/sdr/DJFA20151120002), Nov 20, 2015: Cessna 750. WIRE HARNESS. DAMAGED. CREW REPORTED ENG POWER ROLL BACK INTERMITTENTLY. ACFT LANDED SAFELY. REPLACED THE ENG CONTROL B WIRE HARNESS. (N708FL)
- [SDR CA151021010](https://openairdocs.org/sdr/CA151021010), Oct 20, 2015: Dhav DHC8102. WIRE. BROKEN. (CAN) SHORTLY AFTER TAKEOFF, FLIGHT CREW OBSERVED TORQUE FLUCTUATIONS ASSOCIATED WITH STRONG YAW INPUTS. THE ENGINE WAS 
- [SDR CA150310007](https://openairdocs.org/sdr/CA150310007), Mar 5, 2015: Dhav DHC8102. DIODE. MISMANUFACTURED. (CAN) WHILE CARRYING OUT POST INSTALLATION WIRING CHECKS, FOUND SUPPLIED DIODE SPLICES SHORTED. FURTHER INVESTIGATION FO
- [SDR DALA2015012300553](https://openairdocs.org/sdr/DALA2015012300553), Jan 22, 2015: Boeing 717200. WIRE. BURNED. DURING TAXI, RT ENGINE WOULD NOT SHUTDOWN. CIRCUIT BREAKER FOR RT ENGINE FUEL SWITCH TRIPPED. MAINTENANCE FOUND WIRES SH (N968AT)
- [SDR CA140728020](https://openairdocs.org/sdr/CA140728020), Jul 25, 2014: Beech 1900D. WIRE. DAMAGED. (CAN) DURING AN A,B,C STRUCTURAL INSPECTION CHECK MAINTENANCE NOTICED A SINGLE WIRE FROM AN ADJACENT WIRE BUNDLE WAS WRA
- [SDR CALA2014050290945](https://openairdocs.org/sdr/CALA2014050290945), May 1, 2014: Boeing 777222. CONNECTOR. DIRTY. RIGHT ENG WOULD NOT SHUT DOWN ON ARRIVAL. MX MG 73-60212 NOT ACTIVE. ACCOMPLISHED FIM TASK 73-22-802 IAW WD 76-21-71. WH (N222UA)
- [SDR CA131118029](https://openairdocs.org/sdr/CA131118029), Oct 28, 2013: Aerosp AS355N. WIRE HARNESS. CRACKED. (CAN) WATER ENTERED THE NR 1 ENGINE HARNESS THROUGH A CRACK IN THE SHIELDING AT THE TORQUEMETER CONNECTOR PLUG. THE WATE
- [SDR ASAA2013070595481](https://openairdocs.org/sdr/ASAA2013070595481), Jul 5, 2013: Boeing 737890. WIRE. DAMAGED. WHILE ACCOMPLISHING TASK CARD 78273000, ENGINE 1 LOGGED LONG TERM FAULT 76-31361. THE START LEVER SIGNAL DISAGREE. ACFT  (N570AS)
- [SDR CHQA20130222061](https://openairdocs.org/sdr/CHQA20130222061), Feb 22, 2013: Emb EMB145LR. CONNECTOR. CORRODED. CREW REPORTED THAT ON TAKEOFF THEY SELECTED THE CLIMB THRUST RATING AND THE MODE AUTOMATICALLY REVERTED TO T/O THRUST MO (N266SK)
- [SDR 2012FA0000627](https://openairdocs.org/sdr/2012FA0000627), Aug 16, 2012: Cessna 550. WIRE. CHAFED. THROTTLE QUADRANT EMITTING SPARKS WITH LT POWER LEVER AT TAKEOFF. FOUND T/R DEPLOY/STOW MICROSWITCH WIRES CHAFED THROUGH (N380AK)
- [SDR CA110808003](https://openairdocs.org/sdr/CA110808003), Jul 13, 2011: Bombdr BD1001A10. WIRE HARNESS. DAMAGED. THE ACFT WAS SCHEDULED FOR A FLIGHT. APU START WAS NORMAL. HOWEVER, THE AREA WAS CLOSED SHORTLY BEFORE ENGINE START BECA
- [SDR UALA2011030401062](https://openairdocs.org/sdr/UALA2011030401062), Mar 3, 2011: Boeing 767322. WIRE. FAULTY. ON DESCENT AS THROTTLES RETARDED TO IDLE, WITH AUTO PILOT & AT OFF. SUPPLEMENTAL DATA UPDATE F/O FELT VIBRATION IN YOKE  (N669UA)
- [SDR CHQA201100041](https://openairdocs.org/sdr/CHQA201100041), Feb 23, 2011: Emb EMB145LR. CONNECTOR. CORRODED. CREW REPORTED THAT AFTER TAKEOFF THE THRUST MODE WOULD NOT CHANGE FROM TAKEOFF MODE. THE CREW RETURNED TO FIELD AND LAND (N266SK)
- [SDR 2010F00243](https://openairdocs.org/sdr/2010F00243), Nov 11, 2010: Snias AS350B3. CONNECTOR. DIRTY. AMBER GOV CAUTION MESSAGE APPEARED FOR APPROX 2-3 SECONDS IN FLIGHT 2 MILES OUT FROM LANDING IN COVENANT MEDICAL CENTER. (N150AE)
- [SDR CA101019013](https://openairdocs.org/sdr/CA101019013), Oct 16, 2010: Boeing 777333ER. WIRE HARNESS. CHAFED. DURING TROUBLESHOOTING FOR MULTIPLE AUTOTHROTTLE DISCONNECT SNAGS FOUND WIRES W0770-2008B-20, W0770-2008R-20, W0770-2006
- [SDR HNAA2008121900353](https://openairdocs.org/sdr/HNAA2008121900353), Dec 19, 2008: Dhav DHC8102. SWITCH. DIRTY. WHEN ADVANCING POWER LEVER FOR TAKEOFF AT APPROXIMATELY 30 PERCENT TORQUE NUMBER 2 PROPELLER FEATHERED. INSPECT ENGINE C (N980HA)
- [SDR CA070827008](https://openairdocs.org/sdr/CA070827008), Aug 23, 2007: Frchld SA227DC. WIRE. DAMAGED. (CAN) AFTER AIRCRAFT LANDED AND WAS TAXING THE SPEED LEVERS WERE PULLED BACK INTO LOW IDLE THE RT ENGINE OIL LIGHT CAME 
- [SDR NSVA20070107](https://openairdocs.org/sdr/NSVA20070107), Apr 19, 2007: Saab 340B. WIRE. BROKEN. FLIGHT IDLE STOP OPEN ANNUNCIATOR ILLUMINATED UPON GEAR UP AT TAKEOFF. INSPECTED AND CLEAN SQUAT SW'S AND CONNECTOR FOR  (N210CJ)
- [SDR RAIA00704037](https://openairdocs.org/sdr/RAIA00704037), Apr 13, 2007: Emb EMB145LR. WIRE HARNESS. FAULTY. PRE FLT 8010 - STL - ENGINE 2 NO DISPATCH. MAINTENANCE REMOVED AND REPLACED NR 2 ENGINE INTERNAL YELLOW B-HARNESS, NO FA (N841HK)
- [SDR NSVA20070029](https://openairdocs.org/sdr/NSVA20070029), Feb 5, 2007: Saab 340B. WIRE. BROKEN. FLIGHT IDLE STOP OPEN LIGHT ILLUMINATED AFTER TAKEOFF, OVERRIDE KNOB IS IN. T/S IAW 76-10-60 AND FOUND A BROKEN WIRE ON  (N339CJ)
- [SDR 4511401112007](https://openairdocs.org/sdr/4511401112007), Jan 11, 2007: Lear 45LEAR. MONOPOLE. MALFUNCTIONED. ON TAKEOFF, THE RT ENGINE BEGAN SURGING. CREW ELECTED TO RETURN TO DEPARTURE AIRPORT FOR MAINTENANCE. MAINTENANCE RE-SHI (N417FX)
- [SDR MASA200602561](https://openairdocs.org/sdr/MASA200602561), Nov 11, 2006: Dhav DHC8202. SWITCH. DIRTY. ASH 7014 GJT. ABORTED TAKEOFF DUE TO A CONFIG CAUTION. MX CLEANED THROTTLE SWITCHES. (N454YV)
- [SDR NSVA200600181](https://openairdocs.org/sdr/NSVA200600181), Oct 20, 2006: Saab 340B. CONNECTOR. DIRTY. FLT IDLE STOP OPEN LIGHT ON AFTER TAKEOFF. CLEANED CONNECTOR ON LT MLG WHEEL WELL, OPS CK GOOD IAW SAAM 76-10-60-05. (N339CJ)
- [SDR CA060425001](https://openairdocs.org/sdr/CA060425001), Apr 23, 2006: Robsin R44RAVENII. RELAY. STUCK. AFTER PRIMING THE ENGINE, IT WAS NOTED THAT THE AUX FUEL PUMP WOULD NOT SHUT OFF. THE TROUBLE WAS TRACED TO THE CONTROL 
- [SDR C2XA06CL003](https://openairdocs.org/sdr/C2XA06CL003), Jan 4, 2006: Emb EMB145LR. CONNECTOR. LOOSE. CLE FLIGHT NR 2542, THE CREW REPORTED THEY WERE UNABLE TO CHANGE THRUST SETTING AFTER TAKEOFF. THE AIRCRAFT RETURNED TO  (N16976)
- [SDR QXEA200600003](https://openairdocs.org/sdr/QXEA200600003), Jan 2, 2006: Dhav DHC8202. CONNECTOR. DIRTY. SEA FLIGHT NR 2004, NR 1 ENGINE TORQUE WENT TO 108 PERCENT FOR LESS THAN A SECOND THEN RETURNED TO NORMAL TORQUE WITH PO (N360PH)
- [SDR 08182005C](https://openairdocs.org/sdr/08182005C), Aug 18, 2005: Saab 340B. CABLE. DAMAGED. RT POWER LEVER DOES NOT CONTROL TORQUE INFLIGHT OR ON THE GROUND. REMOVED AND REPLACED RT POWER CABLE. (N314CE)
- [SDR GAJ2005F00000](https://openairdocs.org/sdr/GAJ2005F00000), Feb 7, 2005: Piper PA31350. GROUND WIRE. SHORTED. A .2500 INCH X .5000 INCH PIECE OF FOD (A SHIM GLUED ONTO THE RT THROTTLE LEVER TO (MAKE) THE SWITCH ,( NOT INSTALLED BY (N3528Y)
- [SDR P5CA0401267](https://openairdocs.org/sdr/P5CA0401267), Oct 31, 2004: Boeing 747249F. CONNECTOR. DIRTY. FUEL CONDITION ACTUATOR NR 1 ENGINE CIRCUIT BREAKER POPPED ON ENGINE START. REMOVED, CLEANED & REINSTALLED CONNECTOR AT  (N920FT)
- [SDR CA040601014](https://openairdocs.org/sdr/CA040601014), May 30, 2004: Bac 146200A. CONNECTOR. SHORTED. (CAN) UNCOMMANDED IN-FLIGHT SHUTDOWN OF NR 4 ENG. DURING FINAL APPROACH. CONNECTOR IDENT (P52) ON BACK-UP OVERSPEED CONT
- [SDR AWXA200400578](https://openairdocs.org/sdr/AWXA200400578), May 27, 2004: Airbus A320231. WIRE. CHAFED. ON CLIMBOUT, RECEIVED ECAM INDICATION NR 2 ENG NACELLE TEMP VARIES BETWEEN 315 & 380 DEGREES, INDICATION INTERMITTENT, D (N645AW)
- [SDR CA040527010](https://openairdocs.org/sdr/CA040527010), May 26, 2004: Swrngn SA227AC. WIRE. BROKEN. ON TAKEOFF THE CREW ABORTED DUE TO AN AMBER 'NOSE STEER FAIL' LIGHT WAS 'ON'. SYSTEM WAS TROUBLESHOT AND A BROKEN WIRE W
- [SDR MALA040349](https://openairdocs.org/sdr/MALA040349), Apr 24, 2004: Bac AVRO146RJ85A. LEAD. SHORTED. IN CLIMB AT APPROX 7000 FT HEARD LOUD POPPING NOISE THEN APPROX 1 MIN LATER ANOTHER POPPING NOISE FOLLOWED BY POWER LOSS (N530XJ)
- [SDR DL767040507](https://openairdocs.org/sdr/DL767040507), Mar 4, 2004: Boeing 767232. WIRE. CORRODED. DURING HMV IN GSO FOUND NR 2 PYLON AND ENGINE WIRING CORRODED AT CANNON PLUGS. REPLACED WIRES AND PLUGS. (N103DA)
- [SDR DL767040506](https://openairdocs.org/sdr/DL767040506), Mar 4, 2004: Boeing 767232. WIRE. CORRODED. DURING HMV IN GSO FOUND NR 1 PYLON AND ENGINE WIRING CORRODED AT CANNON PLUGS. REPLACED WIRING AND PLUGS. (N103DA)

All 66: https://openairdocs.org/jasc/7697/reports.md

## Other codes in chapter 76

- [JASC 7600](https://openairdocs.org/jasc/7600): Engine Controls (513 reports)
- [JASC 7601](https://openairdocs.org/jasc/7601): Engine Synchronizing (30 reports)
- [JASC 7602](https://openairdocs.org/jasc/7602): Mixture Control (144 reports)
- [JASC 7603](https://openairdocs.org/jasc/7603): Power Lever (1,582 reports)
- [JASC 7620](https://openairdocs.org/jasc/7620): Engine Emergency Shutdown System (40 reports)

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