# JASC 3197: Instrument System Wiring

- Type: JASC system/component code (FAA)
- ATA chapter: 31 Instruments
- Title in the code table: INSTRUMENT SYSTEM WIRING
- Service difficulty reports: 202
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=32
- Page: https://openairdocs.org/jasc/3197

## What it covers

For reports indicating a problem with wiring specific to the Instrument Systems.

## Service difficulty reports (202, newest 50)

- [SDR HNAA2026083100812](https://openairdocs.org/sdr/HNAA2026083100812), Aug 28, 2026: Emb EMB145LR. ELEC CONNECTOR. LOOSE. ON CLIMBOUT, MAIN PTRIM INOPERTIVE EICAS MESSAGE, EMERGENCY DECLARED & RTF. DURING TROUBLE SHOOTING, FOUND HSA CONNECTOR (N932AE)
- [SDR FDEA202606250827](https://openairdocs.org/sdr/FDEA202606250827), Jun 25, 2026: Boeing 7673S2F. ELEC CONNECTOR. DAMAGED. FSS DISPLAY SHOWS UNARMED STATUS WHILE INFLIGHT. AMM: 26-90-03-2 EA: H-2624-T0387831 C/W E.A. H-2624-T0387831 TO RE-PIN  (N101FE)
- [SDR DXTA2026020906810](https://openairdocs.org/sdr/DXTA2026020906810), Feb 6, 2026: Bombdr BD1001A10. I/O MODULE. DEFECTIVE. SHORTLY AFTER TAKE OFF WE STARTED EXPERIENCING A SERIES OF CAS MSGS. AT FIRST A FEW. THEN MANY. AT THE HEIGHT 2 PAGES FU (N789QS)
- [SDR 2025FA0000534](https://openairdocs.org/sdr/2025FA0000534), Aug 4, 2025: Beech B200GT. PCB. CORRODED. MOISTURE AND CORROSION DAMAGE ARE BEING FOUND ON CIRCUIT BOARDS FOLLOWING POSSIBLE WATER INTRUSION THROUGH UPPER WING SK
- [SDR AALA202503313438](https://openairdocs.org/sdr/AALA202503313438), Mar 28, 2025: Airbus A321231. ELECTRICAL BOX. DEFECTIVE. AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED THAT THEY NOTICED A MOMENTARY FAINT SMELL SIMILAR TO A LIT MATCH. UPON FURTH (N921US)
- [SDR CVGA20250303001](https://openairdocs.org/sdr/CVGA20250303001), Feb 25, 2025: Beech 400A. DIODE. FAILED. SMOKE CAME FROM DASH AREA WHEN ENG SYNC LIGHT IS ON - REMOVED AND REPLACED CR119 DIODE WITH NEW DIODE, P/N 1N4007, ON EN (N496TM)
- [SDR IPXA2025011331393](https://openairdocs.org/sdr/IPXA2025011331393), Jan 10, 2025: Airbus A300F4622R. WIRE. BROKEN. **SDR FILED OPEN** FAULT - AVI Z800 - CREW DOOR SIDE WARNING LIGHT WITH WIRE BROKEN APPROVED. (N153UP)
- [SDR P5CA2024110800048](https://openairdocs.org/sdr/P5CA2024110800048), Nov 8, 2024: Boeing 74787UF. PCB. FAILED. REJECTED TAKE OFF @ 110 KNOTS MASTER WARING ON EICAS.(<P>REMOVED &AMP; REPLACED MAWEA PRINTED CIRCUIT CARD (MASTER MONIT (N855GT)
- [SDR DALA2024071807236](https://openairdocs.org/sdr/DALA2024071807236), Jul 13, 2024: Boeing 717200. COAX. LOOSE. SHIP 9554 -ATO- THE FLIGHT CREW ABORTED THE TAKEOFF AT 130 KTS DUE TO THE #1 PRIMARY FLIGHT DISPLAY AND MULTI-FUNCTIONAL (N894AT)
- [SDR UIEA2024070600585](https://openairdocs.org/sdr/UIEA2024070600585), Jul 6, 2024: Boeing 74747UF. ELEC CONNECTOR. DIRTY. BLEED 3 EICAS MESSAGE(<P>FOUND #2 WIRE ON HPSOV WAS READING 12 MEGA OHMS. REMOVED CANNON PLUG AND CLEANED, RESEATED CANN (N476MC)
- [SDR DALA2024040203971](https://openairdocs.org/sdr/DALA2024040203971), Mar 28, 2024: Boeing 757232. WIRE. BROKEN. SHIP 680 ENTER PANEL BACKLIGHTING FROM STBY INSTRUMENTS TO GEAR HANDLE BEGAN FLICKERING DURING T/O ROLL. FAINT BURNING S (N680DA)
- [SDR IPXA2024022619435](https://openairdocs.org/sdr/IPXA2024022619435), Feb 22, 2024: Airbus A300F4622R. WIRE. BROKEN. FAULT: PILOT REPORT EMERGENCY CANCEL BUTTON SAFETY WIRE BROKEN. SAFETY WIRE INSTALLED ON EMERGENCY CANCEL BUTTON IAW AMM (N122UP)
- [SDR QMLA2024021220015](https://openairdocs.org/sdr/QMLA2024021220015), Feb 9, 2024: Bolkms BK117C2. CONTROL PANEL. SHORTED. ENGAGING THE NVG LIGHTING SWITCH CAUSED A SHORT IN THE OVERHEAD SWITCH PANEL. (N146HC)
- [SDR AALA202305173490](https://openairdocs.org/sdr/AALA202305173490), May 15, 2023: Airbus A320232. INTERFACE UNIT. DEFECTIVE. AIRCRAFT WAS GROUNDED: EVACUATION SIGNAL ON GROUND WILL NOT SHUT OFF. MAINTENANCE REPLACED CIDS DIRECTOR #1 PER AMM 23-7 (N601AW)
- [SDR JIKA20230105201](https://openairdocs.org/sdr/JIKA20230105201), Jan 2, 2023: Beech C99. CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT AFTER TAKEOFF FROM KPBG, HE NOTED AN ELECTRICAL SMELL IN THE COCKPIT AND NOTICED TRACES OF SMOKE FRO (N51RP)
- [SDR A6WA202111227983](https://openairdocs.org/sdr/A6WA202111227983), Nov 21, 2021: Cndair CL6002B19. WIRE. FAILED. DURING CLIMB, AT ABOUT 10,000 FEET THE CREW RECEIVED MULTIPLE CAUTION MESSAGES. CREW RAN THE QRH BASED ON THE MESSAGES A (N439AW)
- [SDR QMLA2021090720044](https://openairdocs.org/sdr/QMLA2021090720044), Sep 4, 2021: Bell 407. CONNECTOR. DISCONNECTED. ACSN 51344 N911AL REPORTED LANDING ON FT MCDOWELL GOLF COURSE DUE TO MAIN TRANSMISSION CHIP LIGHT AND A COMMUNICATION IS (N911AL)
- [SDR FQAR20210518002](https://openairdocs.org/sdr/FQAR20210518002), May 13, 2021: Piper PA28181. WIRE HARNESS. DAMAGED. AIRCRAFT WAS WRITTEN UP FOR "HEADING IS X'ED OUT ON PFD" DURING TROUBLESHOOTING IT WAS FOUND THAT THE WIRING BUNDLE FOR  (N748PA)
- [SDR SIMA20210502005](https://openairdocs.org/sdr/SIMA20210502005), May 2, 2021: Emb EMB145LR. CONNECTOR. LOOSE. DURING TAKEOFF ROLL NO TAKE OFF CONFIG EICASS MESSAGE. NO AURAL INDICATION. AFTER ABORT RAN QRH. RECIEVED TAKEOFF OK AUR (N681AE)
- [SDR 2021FA0000098](https://openairdocs.org/sdr/2021FA0000098), Apr 5, 2021: WIRE. DAMAGED. MASTER CAUTION AND MASTER CAUTION ANNUNCIATOR LIGHTS ON BOTH SIDES DOES NOT WORK WHEN TEST PUSHED OR ANY PROBLEM ASSOCIA
- [SDR AALA202010029008](https://openairdocs.org/sdr/AALA202010029008), Sep 30, 2020: Boeing 737823. CONNECTOR. DIRTY. AIRCRAFT WAS NOT GROUNDED: FIRST OFFICERS FIRE MASTER WARNING LIGHT DOES NOT RESET. ACCOMPLISHED FIM TASK 33-10-00. CLEA (N813NN)
- [SDR IKBR2020072100003](https://openairdocs.org/sdr/IKBR2020072100003), Jul 21, 2020: Cirrus SR22. CONNECTOR. DAMAGED. PILOT FOUND STALL WARNING AND FUEL QUANTITY CIRCUIT BREAKERS TRIPPED ON TROUBLESHOOTING, FOUND CONNECTOR P1048 AND J1048 (N250JH)
- [SDR AALA2020031329008](https://openairdocs.org/sdr/AALA2020031329008), Mar 11, 2020: Boeing 757223. CONNECTOR. DEFECTIVE. AIRCRAFT GROUNDED - ABORTED TAKE OFF, SPEED 115-120 KTS, AURAL ALERT FOLLOWED BY BRIEF RED MASTER/ ALERT BUTTON. **SUPPL (N187AN)
- [SDR UIEA2019121756077](https://openairdocs.org/sdr/UIEA2019121756077), Dec 15, 2019: Boeing 767306. WIRE. BROKEN. OVERHEAD CLUSTER TAT LIGHT INOP, WORKS DURING TEST.&NBSP;(<P>PERFORMED TROUBLESHOOTING,&NBSP; DISCOVERED 2&NBSP;BROKEN W (N1321A)
- [SDR AXSA201904300001](https://openairdocs.org/sdr/AXSA201904300001), Apr 29, 2019: Beech 99. CONNECTOR. OVERHEATED. PILOT DETECTED ELECTRICAL SMELL IN FLIGHT.PART WAS FOUND OVERHEATED. (N191WA)
- [SDR MUIA20190212001](https://openairdocs.org/sdr/MUIA20190212001), Feb 12, 2019: Cessna 208B. CONNECTOR. CONTAMINATED. CREW PERFORMED AIR RETURN AFTER RESERVOIR LOW FUEL LIGHT ILLUMINATED ON ANNUNCIATOR PANEL WITH LH & RH WING LOW FUEL LIG (N208EE)
- [SDR QXEA2019010200476](https://openairdocs.org/sdr/QXEA2019010200476), Dec 29, 2018: Bombdr DHC8402. WIRE HARNESS. DEFECTIVE. PROP DEICE CAUTION LIGHT ILLUMINATES WHEN PROP 2 CYCLES. PROP 1 OPERATES NORMALLY. DIVERTED. LANDING UNEVENTFUL. REMOVED (N440QX)
- [SDR 2018FA0000498](https://openairdocs.org/sdr/2018FA0000498), Nov 10, 2018: Bombdr BD1001A10. CONNECTOR. INTERMITTENT. ON THE FLIGHT FROM KLAS TO KVNY, ON SHORT FINAL "YAW DAMP FAIL" CAS MESSAGE CAME ON PFD. (N228PK)
- [SDR TIMA201807100622](https://openairdocs.org/sdr/TIMA201807100622), Jun 22, 2018: Beech C99. WIRE. SHORTED. ELECTRICAL SYSTEM FAILURE AFTER DEPARTURE. THE INVESTIGATION FOUND ANNUNCIATOR WIRE SHORTED TO STRUCTURE PREVENTING VISU (N239AL)
- [SDR QMLA2018030418027](https://openairdocs.org/sdr/QMLA2018030418027), Mar 4, 2018: Urocop EC135T2. TERMINAL. BROKEN. APPROXIMATELY 30 MINUTES INTO THE FLIGHT FROM 41WA TO WT22, FCDM 1 FAILED WHILE ON IFR CLEARANCE LEVEL AT 10,000 FT. MSL (N235UW)
- [SDR 2017FA0000644](https://openairdocs.org/sdr/2017FA0000644), Dec 14, 2017: Mooney M20M. CONNECTOR. BURNED. AIRCRAFT CAME IN FOR ANNUAL INSPECTION WITH PILOT-REPORTED DISCREPANCY OF AVIONICS FAN CIRCUIT BREAKER INTERMITTENT TRIP (N1012C)
- [SDR COEA2017100408804](https://openairdocs.org/sdr/COEA2017100408804), Oct 4, 2017: Aerosp ATR42500. PIN. DIRTY. NR 2 TORQUE DIGITAL GAUGE SHOWING ONLY DASHES. CREW ELECTED TO RETURN TO DEPARTURE. LANDED WITHOUT INCIDENT. NO EMERGENC (N804HC)
- [SDR EVCA201708260001](https://openairdocs.org/sdr/EVCA201708260001), Aug 26, 2017: Bell 206L3. CONNECTOR. BURNED. FLIGHT CREW REPORTED A BURNING ODOR EMANATING FROM THE AFT CABIN. DURING INSPECTION, IT WAS DISCOVERED THAT THE CONNECTO (N295AE)
- [SDR AALA201708109001](https://openairdocs.org/sdr/AALA201708109001), Aug 7, 2017: Boeing 757223. GROUND WIRE. DISCONNECTED. AIRCRAFT WAS GROUNDED. 30 MINUTES AFTER TAKEOFF AT FL 380, GOT INCREASING ELECTRICAL SMELL. LASTED 2 MINUTES THEN WENT A (N190AA)
- [SDR 2A6D2017041917035](https://openairdocs.org/sdr/2A6D2017041917035), Apr 19, 2017: Bell 407. CONNECTOR. CONTAMINATED. WATER WAS FOUND IN THE 1J8 AFT ROOF CONNECTOR. THIS CAUSED THE PILOT TO RECEIVE ERRONEOUS ENGINE INDICATIONS. (N458AM)
- [SDR O2GA2017031682401](https://openairdocs.org/sdr/O2GA2017031682401), Mar 10, 2017: Beech B300. SWITCH. UNSECURE. DURING POST FLIGHT INSPECTION, 4 MINUTES AFTER POWERING THE EMERGENCY INSTRUMENT LIGHTS, THE PILOT SAW SMOKE ASSOCIATED  (N824UP)
- [SDR VE7A2017021400001](https://openairdocs.org/sdr/VE7A2017021400001), Feb 9, 2017: Bell 407. WIRE. CHAFED. CREW REPORTED ELECTRICAL ODOR WHEN BLEED AIR HEAT WAS TURNED ON AND REPORTED SMELL WENT AWAY WHEN BLEED AIR HEAT WAS TUR (N301LE)
- [SDR SIMA20161107001](https://openairdocs.org/sdr/SIMA20161107001), Nov 7, 2016: Emb EMB145LR. WIRE. CHAFED. ELECTRICAL SMOKE IN COCKPIT DURING THE DESCENT. IT APPEARED TO FOG OUT ON THE LEFT SIDE JUST BELOW THE GLARESHIELD. FOUN (N935AE)
- [SDR IPXA2016100709060](https://openairdocs.org/sdr/IPXA2016100709060), Oct 6, 2016: Boeing 75724APF. TERMINAL. MELTED. PUNGENT ODOR IN COCKPIT NOTICED DURING INITIAL CLIMB WITH GEAR DOWN. ODOR DISAPEARED WITH THE GEAR UP. ON APPROACH WITH  (N407UP)
- [SDR HDNA20160823009](https://openairdocs.org/sdr/HDNA20160823009), Aug 23, 2016: Urocop EC135P2. WIRE. BURNED. INSTRUMENT LIGHTS FLICKERED INTERMITTENTLY AND PILOT COULD SMELL BURNING ODOR. TECH FOUND BURNED WIRE BEHIND INSTRUMENT  (N913ET)
- [SDR ASOA2016081915282](https://openairdocs.org/sdr/ASOA2016081915282), Aug 19, 2016: Cndair CL6002C10. CONNECTOR. DAMAGED. BLEED DUCT MASTER WARNING (LT COWL) DIVERTED. REMOVED AND REPLACED ELECTRICAL CONNECTORS MT142P2 AND MT141P2 IAW ESPM 20 (N730EV)
- [SDR QMLA2016052616055](https://openairdocs.org/sdr/QMLA2016052616055), May 26, 2016: Snias AS350B3. CONNECTOR. DIRTY. AFTER TAKEOFF, THE PILOT NOTICED THAT THE TOP OF THE VEMD SCREEN HAD REVERTED BACK FROM THE STANDARD FLI IN FLIGHT SCREE (N103LN)
- [SDR ASMF201605012](https://openairdocs.org/sdr/ASMF201605012), Apr 9, 2016: Boeing 73776Q. PIN. DAMAGED. AIRCRAFT RETURNED OF FLIGHT DUE TO DURING CLIMB, WHEN ACTION TO LG UP LEVER IT WAS NOT UNABLE TO MOVE UP THE LEVER & THE (N997AM)
- [SDR 2016FA0000117](https://openairdocs.org/sdr/2016FA0000117), Feb 28, 2016: Piper PA28140. WIRE HARNESS. CHAFED. AS THE AIRCRAFT WAS CLIMBING THROUGH 400 FEET AGL, THE PILOT DETECTED SMOKE COMING FROM UNDERNEATH THE LT HALF OF THE IN (N7168R)
- [SDR EBVR20150612001](https://openairdocs.org/sdr/EBVR20150612001), Jun 12, 2015: Beech 200BEECH. WIRE. DAMAGED. FLIGHT DIRECTOR CIRCUIT BREAKER TRIPPED WHEN ALTITUDE IS ENGAGED ON FLIGHT DIRECTOR PANEL. FOUND BURNED, CHAFED WIRES UN (N307DM)
- [SDR 2015FA0000230](https://openairdocs.org/sdr/2015FA0000230), May 25, 2015: Cessna 177RG. CONNECTOR. SEPARATED. A PLASTIC BARBED CONNECTOR THAT JOINS THE PITOT HOSE FROM THE P1000 PFD TO THE ACFT PITOT SYSTEM SEPARATED 200 FT AFTER  (N4NV)
- [SDR CA150219002](https://openairdocs.org/sdr/CA150219002), Feb 18, 2015: Airbus A321211. RELAY. FAILED. (CAN) FLIGHT CREW REPORTED THAT THEY HAD A VERY STRONG ACRID ODOR FOLLOWED BY A CIRCUIT BREAKER TRIPPING. SUSPECTED WAS 
- [SDR DXTA2015021705980](https://openairdocs.org/sdr/DXTA2015021705980), Feb 16, 2015: Amd FALCON2000EX. TERMINAL. BURNED. AFTER ENGINE START, TURNED ON THE WINDSHIELD HEAT. WITHIN 1 TO 2 MINUTES SMOKE & FIRE CAME OUT OF THE CENTER GLARE SHIEL (N233QS)
- [SDR FDEA201501230276](https://openairdocs.org/sdr/FDEA201501230276), Jan 23, 2015: Doug MD1030F. WIRE. DAMAGED. WIRE NR G201-226-22 DAMAGED OVER AUX TANK. R & R WIRE G201-226-22. (N319FE)
- [SDR CA150106007](https://openairdocs.org/sdr/CA150106007), Jan 6, 2015: Bombdr BD1001A10. SWITCH. MISMANUFACTURED. (CAN) SWITCH WITH FLAKING ON NICKEL PLATING. A NON-CONFORMANCE OF ROTARY SWITCH WAS REPORTED BY THE SUPPLIER. CONTACTS W

All 202: https://openairdocs.org/jasc/3197/reports.md

## Other codes in chapter 31

- [JASC 3100](https://openairdocs.org/jasc/3100): Indicating/Recording System (382 reports)
- [JASC 3110](https://openairdocs.org/jasc/3110): Instrument Panel (338 reports)
- [JASC 3120](https://openairdocs.org/jasc/3120): Independent Instruments (209 reports)
- [JASC 3130](https://openairdocs.org/jasc/3130): Data Recorders (Flight/Maintenance) (126 reports)
- [JASC 3140](https://openairdocs.org/jasc/3140): Central Computers (618 reports)
- [JASC 3150](https://openairdocs.org/jasc/3150): Central Warning (3,980 reports)
- [JASC 3160](https://openairdocs.org/jasc/3160): Central Display (1,317 reports)
- [JASC 3170](https://openairdocs.org/jasc/3170): Automatic Data (20 reports)

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