# JASC 2697: Fire Protection System Wiring

- Type: JASC system/component code (FAA)
- ATA chapter: 26 Fire Protection
- Title in the code table: FIRE PROTECTION SYSTEM WIRING
- Service difficulty reports: 1,399
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=24
- Page: https://openairdocs.org/jasc/2697

## What it covers

For reports indicating a problem with wiring specific to the Fire Protection System.

## Service difficulty reports (1,399, newest 50)

- [SDR DALA2026091405117](https://openairdocs.org/sdr/DALA2026091405117), Sep 11, 2026: Airbus A330941. WIRE HARNESS. FAULTED. DIV - INTO YYT DUE TO ENG 1 FIRE DETECTION FAULT. REPLACED HARNESS 62WD1. OK FOR SERVICE. (8847642) AIRCRAFT WAS GROUNDE (N405DX)
- [SDR SWAA2026090445301](https://openairdocs.org/sdr/SWAA2026090445301), Aug 31, 2026: Boeing 7377BD. ELEC CONNECTOR. LOOSE. NR 1 FIRE HANDLE WILL NOT ILLUMINATE DURING FIRE TEST IN NORMAL NR 1 FIRE HANDLEWILL NOT ILLUMINATE DURING FIRE TEST IN  (N7746C)
- [SDR DJSR2026090128001](https://openairdocs.org/sdr/DJSR2026090128001), Aug 28, 2026: Amd FALCON20C5. ELEC CONNECTOR. SHORTED. ON APPROACH, RT ENGINE & WHEEL WELL FIRE INDICATION AND ALARM SOUNDED. CREW PERFORMED FULL CHKLST & DECLARED EMERGENCY.  (N531FL)
- [SDR L87A2026083100266](https://openairdocs.org/sdr/L87A2026083100266), Aug 28, 2026: Cessna 208B. ELEC CONNECTOR. CONTAMINATED. ENGINE FIRE WARNING IN FLIGHT, APPROX 5 MINS AFTER TAKEOFF EXPERIENCED AN ENGINE FIRE WARNING WHICH WAS DETERMINED TO BE (N622TP)
- [SDR ABXA20260819369](https://openairdocs.org/sdr/ABXA20260819369), Aug 19, 2026: Boeing 767232. WIRE. DAMAGED. FOUND WIRES W606-575R-20, W614-532R-20, W614-912R-20 & W614-020R-20 DAMAGED. REFERENCE WDM 26-16-31. REPAIRED WIRES PER  (N745AX)
- [SDR SWAA2026082102532](https://openairdocs.org/sdr/SWAA2026082102532), Aug 17, 2026: Boeing 7378H4. TERMINAL. LOOSE. NR 1 ENGINE OVHT/FIRE TEST FAILED. OK TO CONTINUE IAW MEL 26-2-01 XB SP1. FOUND LOOSE NUT ON THE TERMINAL TO LEAD. RESEC (N8686A)
- [SDR ABXA20260817366](https://openairdocs.org/sdr/ABXA20260817366), Aug 17, 2026: Boeing 767232. CIRCUIT CARD. FAULTED. FWD CARGO DET 2 EICAS MSG. PERFORMED TROUBLESHOOTING IAW FIM 26-10-00-990-803 FAULT TREE 803. R & R FIRE DET. CARD, PROB (N745AX)
- [SDR SWAA2026081923403](https://openairdocs.org/sdr/SWAA2026081923403), Aug 15, 2026: Boeing 73779P. WIRE HARNESS. BROKEN. NR 2 ENGINE -A- FIRE DETECTION LOOP INOP T/S PER FIM 26-10 TASK 801. FOUND ENGINE #2 LOOP A CORE LEFT HARNESS BROKEN AT  (N7861J)
- [SDR ABXA20260815367](https://openairdocs.org/sdr/ABXA20260815367), Aug 15, 2026: Boeing 7673P6. CIRCUIT CARD. TRIPPED. DURING POWER TRANSFER APU TO GPU, LT ENG FIRE LOOP 1 MESSAGE. RESET BOTH FUSE CARDS M681 (LOOP1) M683(LOOP 2) PERFORMED  (N764CK)
- [SDR ABXA20260810354](https://openairdocs.org/sdr/ABXA20260810354), Aug 10, 2026: Boeing 767232. CIRCUIT BOARD. DEFECTIVE. ON ARRIVAL, AFT CARGO DETECTOR 1 & AFT CARGO DETECTOR 2 STATUS MSGS DISPLAYED. R & R M10427 CARD IAW AMM 26-10-01, OPS C (N745AX)
- [SDR ABXA20260712318](https://openairdocs.org/sdr/ABXA20260712318), Jul 12, 2026: Boeing 7673P6. CIRCUIT CARD. DEFECTIVE. LEFT ENG FIRE LOOP NR 2 STATUS MSG. DUE TO PREVIOUS T/S HISTORY SUSPECTED AFOLTS CARD M-681 BAD. REMOVED OLD THEN INSTAL (N764CK)
- [SDR ABXA20260711316](https://openairdocs.org/sdr/ABXA20260711316), Jul 11, 2026: Boeing 7673P6. CIRCUIT CARD. UNKNOWN. L ENG FIRE LOOP 1 STATUS MESSAGE AC GROUNDED ,CONDUCTED T/S PER FIM 26-11 FT 804, CONTINUITY CHECK PASS. INTEGRITY RESIS (N764CK)
- [SDR JVWA202607100001](https://openairdocs.org/sdr/JVWA202607100001), Jul 7, 2026: Cessna 560XL. SQUIB. MISWIRED. WAS COMPLYING WITH THE CH 4, DOC MV INSPECTION, CALLS FOR A DETAILED INSPECTION OF BOTH ENGINE & APU FIRE EXTINGUISHER W (N712J)
- [SDR SCNA20260709286](https://openairdocs.org/sdr/SCNA20260709286), Jul 7, 2026: Boeing 73786N. TERMINAL. BROKEN. NR 1 ENGINE, RT FIRE CORE LOOP UPPER POSITION WITH BROKEN TERMINAL. REPLACED AND TESTED #1 ENGINE RH FIRE CORE LOOP UPPE (N7949A)
- [SDR SCNA20260702278](https://openairdocs.org/sdr/SCNA20260702278), Jul 2, 2026: Boeing 73786N. ELEC CONNECTOR. DIRTY. PERFORMED ENG FIRE TEST DURING MEET & GREET & FOUND ENG NR 1 LOOP B INOP WITH AMBER FAULT LIGHT ILLUMINATED. PERFORMED R (N5227)
- [SDR AALA202608140248](https://openairdocs.org/sdr/AALA202608140248), Jul 1, 2026: Airbus A321253NX. WIRE. DAMAGED. AIRCRAFT WAS GROUNDED: AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX DUE TO THE FLIG (N420AN)
- [SDR UIEA2026062800550](https://openairdocs.org/sdr/UIEA2026062800550), Jun 27, 2026: Boeing 747481F. WIRE. DAMAGED. FIRE APU WARNING MSG. DISCHARGED BOTTLE. REF WDM 26-15-11-1 INSPECTED AND FOUND W720-452-18R AND W720-451-18R SHORTED TO (N404KZ)
- [SDR DALA2026060603406](https://openairdocs.org/sdr/DALA2026060603406), Jun 5, 2026: Airbus A321271NX. ELEC CONNECTOR. FAILED. ATO - AT 33 KTS DUE TO A LT WING BLEED LEAK MESSAGE. FOUND LT WING LOOP B 91HF CONNECTOR BAD AND LEAKING CLAMPS AT RT WI (N525DA)
- [SDR HNAA2026052900439](https://openairdocs.org/sdr/HNAA2026052900439), May 28, 2026: Emb EMB145LR. ELEC CONNECTOR. SHORTED. APU FIRE WARNING WITH BELL DURING TAXI. C/W QRH. FIRE BOTTLE BLOWN. MEL 28MAY26 17:44 APU FIRE EXTINGUISHING. T/S IAW FI (N646AE)
- [SDR ABXA20260506190](https://openairdocs.org/sdr/ABXA20260506190), May 6, 2026: Boeing 767338. CIRCUIT CARD. FAULTED. MTC PERFORMED F/U-SWAP M681 AND M682 LH ENG FIRE DETECT CARDS AND LEAVE SWAPPED FOR EVALUATUION. SWAPPED CARDS M681 AND  (N317CM)
- [SDR ABXA20260331142](https://openairdocs.org/sdr/ABXA20260331142), Mar 31, 2026: Boeing 76737D. ELEC CONNECTOR. FAULTED. PILOT REPORTED CARGO FIRE A 4 AMBER INDICATION. RESET ELECTRICAL CONNECTOR. ON BOX. ERROR CLEARED. OPS CHK GOOD. IAW B76 (N1327A)
- [SDR 9SZA202609100148](https://openairdocs.org/sdr/9SZA202609100148), Mar 24, 2026: Snias AS350B3. TERMINAL. LOOSE. ENGINE FIRE CAUTION LIGHT INTERMITTENT. FIRE DETECTORS PASSED BENCH TEST PROCEDURES IAW MM. WITH EXCESSIVE VIBRATION AND (N362AC)
- [SDR 9SZA202607100147](https://openairdocs.org/sdr/9SZA202607100147), Mar 24, 2026: Snias AS350B3. TERMINAL. LOOSE. ENGINE FIRE CAUTION LIGHT INTERMITTENT. FIRE DETECTORS PASSED BENCH TEST PROCEDURES IAW MM. WITH EXCESSIVE VIBRATION AND (N362AC)
- [SDR ABXA20260323124](https://openairdocs.org/sdr/ABXA20260323124), Mar 23, 2026: Boeing 767232. CIRCUIT CARD. NOT SEATED. DURING MAINTENANCE INSPECTION, FOUND R ENG FIRE LP 1 STATUS MESSAGE. RERACKED R ENG FIRE LP 1 CARD M683. IAW B767 AMM 26 (N744AX)
- [SDR IPXA2026030566915](https://openairdocs.org/sdr/IPXA2026030566915), Feb 18, 2026: Boeing 75724APF. CONNECTOR. FAULTED. RIGHT ENG OVERHEAT AT CRUISE, 4512 MSG WENT OUT AFTER TWO MINUTES & ENGINE AT IDLE THRUST. ALL ENGINE INDICATIONS WERE N (N455UP)
- [SDR ABXA20260217070](https://openairdocs.org/sdr/ABXA20260217070), Feb 17, 2026: Boeing 767232. ELEC CONNECTOR. UNSECURE. ON CREW PREFLIGHT, FOUND FIRE DET SYS INDICATION B# LINE WAS YELLOW (AMBER). MAINTENANCE RESECURED ELEC CONNECTOR ON CAR (N745AX)
- [SDR DALA2026020200753](https://openairdocs.org/sdr/DALA2026020200753), Jan 30, 2026: Airbus A330302. CIRCUIT BREAKER. TRIPPED. ATB - DUE TO C/B TRIPPED ECAM MSG ALONG WITH FIRE BOTTLE FAULT INDICATION. FOUND CIRCUIT BREAKER FOR FIRE BOTTLE 1/B ENG (N829NW)
- [SDR UIEA2026011200009](https://openairdocs.org/sdr/UIEA2026011200009), Jan 12, 2026: Boeing 74748EF. WIRE. SHORTED. NUMBER 4 ENGINE FIRE INDICATION ON ENG SHUTDOWN. PERFORMED ENG FIRE ON GROUND QRH.DISCHARGED BTH FIRE BOTTLES PER QRH IN (N419MC)
- [SDR ABXA20251231366](https://openairdocs.org/sdr/ABXA20251231366), Dec 31, 2025: Boeing 7673P6. WIRE. DAMAGED. FOUND LT ENG FIRE LOOP 1 ON EICAS DURING S/C MTX GROUNDED A/C AND TROUBLSHOT PER W.D. 26-11-11 FOUND RESISTANCE FLUCTUAT (N764CK)
- [SDR QXEA2025122900378](https://openairdocs.org/sdr/QXEA2025122900378), Dec 29, 2025: Emb ERJ170200LR. SCREW. LOOSE. FLIGHT 2195. RECIRCULATION SMOKE DETECTOR FAILED EICAS MESSAGE. RAN QRH FOR MESSAGE. REMOVED FROM SERVICE. FAULT WAS ACT (N626QX)
- [SDR CALA2025123012514](https://openairdocs.org/sdr/CALA2025123012514), Dec 28, 2025: Boeing 777224. ELEC CONNECTOR. LOOSE. SMOKE REST UPPER DOOR 3 EICAS, FOLLOWED CHECKLIST, NO SMOKE FA & PILOTS REPORTED SMOKE ALARM WENT OFF IN CREW BUNK AREA. (N77014)
- [SDR ABXA20251212331](https://openairdocs.org/sdr/ABXA20251212331), Dec 12, 2025: Boeing 76736N. PCB. DEFECTIVE. RED MAIN DECK CARGO FIRE WARNING WITH ASSOCIATED LIGHTS AND MASTER CAUTION INTERMITTENTLY EVERY 5 MINS.MTX GROUNDED A/C  (N1013A)
- [SDR ABXA2025123317](https://openairdocs.org/sdr/ABXA2025123317), Dec 3, 2025: Boeing 767328. ELEC CONNECTOR. DISCONNECTED. DURING CREW PRE-FLIGHT CHECK, MAIN DECK CARGO LP 1 EICAS MESSAGE. DEFERRED MAIN DECK CARGO LOOP 1 IAW ABX MEL 26-16-2-1. (N1499A)
- [SDR ABXA20251125308](https://openairdocs.org/sdr/ABXA20251125308), Nov 25, 2025: Boeing 767338. ELEC CONNECTOR. UNSECURE. DURING FLIGHT, ALL MAIN CARGO DECK B LOOP SMOKE DETECTOR LIGHTS INDICATING AMBER. RESET CONNECTOR ON CARGO CONTROL FIRE  (N363CM)
- [SDR KY72026F00000](https://openairdocs.org/sdr/KY72026F00000), Nov 23, 2025: Frchld SA227DC. WIRE. DEFECTIVE. E1 ENG FIRE LIGHT ON. REPAIRED DEFECTIVE WIRING TO ENG FIRE DETECTOR DT 1003 IAW SA227DC WM 26-20-00 OPS CHECK GOOD ON G (N889DC)
- [SDR SWI2025F01509](https://openairdocs.org/sdr/SWI2025F01509), Nov 5, 2025: Cndair CL6002B19. CIRCUIT CARD. FAULTED. ON CLIMBOUT THRU APPROXIMATELY 8000, RECEIVED A L JET OVHT FAIL CAUTION MESSAGE AND THEN A L JETPIPE OVHT WARNING MESSAG (N477CA)
- [SDR HALA20251027327](https://openairdocs.org/sdr/HALA20251027327), Oct 25, 2025: Boeing 7879. WIRE HARNESS. FAULTED. ETOPS - ANTI-ICE DUCT LEAK/OVERHEAT DETECTORS ACTIVE FAULT. REMOVED AND REPLACED ENGINE ANTI-ICE ELECTRICAL HARNESS W35  (N783HA)
- [SDR SWAA2025102326021](https://openairdocs.org/sdr/SWAA2025102326021), Oct 19, 2025: Boeing 7377H4. WIRE HARNESS. FAULTED. ENG 1 FIRE DETECT LOOP FAULT ILLUMINATED IN FLIGHT A + B. R & R ENG NR 1 FIRELOOP A HARNESS IAW AMM 26-11-02. OPS TEST G (N249WN)
- [SDR AALA202509165144](https://openairdocs.org/sdr/AALA202509165144), Sep 11, 2025: Boeing 737823. WIRE HARNESS. FAULTY. AIRCRAFT WAS GROUNDED: CLIMBING THROUGH AROUND FL230, WE RECEIVED 2 OVERHEAT DETECTION ALERTS FOLLOWED BY A FIRE BELL AN (N921NN)
- [SDR CALA2025090508519](https://openairdocs.org/sdr/CALA2025090508519), Sep 3, 2025: Boeing 777224. ELEC CONNECTOR. BROKEN. FA REST AREA BUNK 5 SMOKE DETECTOR INOPERATIVE. REMOVED AND REPLACED AFT OCAR NR 5 BUNK DETECTOR IAW AMM 26-14-11, NO HE (N78003)
- [SDR FDEA202508121410](https://openairdocs.org/sdr/FDEA202508121410), Aug 12, 2025: Boeing 757230. ELEC CONNECTOR. SHORTED. ON DEPARTURE, PASSING FL190, SPARKS CAME OUT OF OVERHEAD CIRCUIT BREAKER PANEL. THERE WAS NO SMOKE OR FUMES. LOST LT PFD (N985FD)
- [SDR KY7A2023080500038](https://openairdocs.org/sdr/KY7A2023080500038), Aug 2, 2025: Frchld SA227DC. WIRE. DAMAGED. LEFT ENGINE FIRE LIGHT ERRONEOUSLY ON DURING SHORT FINAL FOR 3 SECONDS & AGAIN DURING TAXI FOR 3 SECONDS. REPAIRED WIRIN (N889DC)
- [SDR ABXA20250720164](https://openairdocs.org/sdr/ABXA20250720164), Jul 20, 2025: Boeing 767306. WIRE. LOOSE. DURING CRUSE FLIGHT L STRUT DUCT LEAK MSG IN-FLIGHT. DID NOT CLEAR AFTER PACK "OFF" & BLEEDS REMOVED, AC THEN DIVERTED T (N1321A)
- [SDR HALA20250715212](https://openairdocs.org/sdr/HALA20250715212), Jul 14, 2025: Airbus A321271N. WIRE HARNESS. FAULTED. ETOPS - ON CLIMB OUT MOMENTERY ECAM FOR ENG 1 LOOP B FAULT MESSAGE CLEAR ON ITS OWN AFTER A FEW MINUTES. REMOVED AND REP (N214HA)
- [SDR JBZA20250714001](https://openairdocs.org/sdr/JBZA20250714001), Jul 9, 2025: Beech B200. ELEC CONNECTOR. LOOSE. DURING FLIGHT LEFT ENGINE FIRE WARNING LIGHT ERRATICALLY FLASHES. ELECTED TO PRECAUTIONARY LAND BACK TO BASE. MAINTENACE (N911RX)
- [SDR SWIA202507090008](https://openairdocs.org/sdr/SWIA202507090008), Jul 8, 2025: Cndair CL6002B19. CONNECTOR. SHORTED. ANTI ICE DUCT WARNING AT CRUISE. QRH COMPLETED. MESSAGE CLEARED. (FLIGHT 5135 - FILED CLOSED)THIS DISCREPANCY WAS TRANSF (N919EV)
- [SDR ABXA202506174127](https://openairdocs.org/sdr/ABXA202506174127), Jun 14, 2025: Boeing 7673P6. WIRE. SHORTED. STATUS MSG: L ENG FIRE LP 2. MAINTENANCE DEFERRED IAW MEL C ABX-26-11-1-1. REFERENCE B767 WDM 26-11-11. FOUND WIRE W53/6 (N764CK)
- [SDR DALA2025061904598](https://openairdocs.org/sdr/DALA2025061904598), Jun 13, 2025: Airbus A320211. ELEC CONNECTOR. DISCONNECTED. SHIP 3224 DISC: CREW REPORTS ENG SQUIB NOT TESTING ON PREFLIGHT. C/A: RECONNECTED CONNECTOR PLUG FOR NBR AFT FIRE BOTTLE (N324US)
- [SDR 4TXA202506130001](https://openairdocs.org/sdr/4TXA202506130001), Jun 9, 2025: Boeing 737484. WIRE HARNESS. PINCHED. #1 ENGINE FIRE HANDLE ILLUMINATED, AND FIRE BELL RANG LESS THAN 3 SECONDS DURING LEVEL OFF AT 3300 FT. AT THE START OF A (N314XA)
- [SDR 2025FA0000375](https://openairdocs.org/sdr/2025FA0000375), May 27, 2025: Gulstm GV. CIRCUIT BREAKER. ARCED. APPLIED A/C POWER AND CHECKED APU CB'S. CONFIRMED FAULT REPORTED BY CREW. CB "FIRE DETECTION APU 2601" TRIPPED AND UNABL (N720LF)

All 1,399: https://openairdocs.org/jasc/2697/reports.md

## Other codes in chapter 26

- [JASC 2600](https://openairdocs.org/jasc/2600): Fire Protection System (300 reports)
- [JASC 2610](https://openairdocs.org/jasc/2610): Detection System (709 reports)
- [JASC 2611](https://openairdocs.org/jasc/2611): Smoke Detection (7,428 reports)
- [JASC 2612](https://openairdocs.org/jasc/2612): Fire Detection (7,458 reports)
- [JASC 2613](https://openairdocs.org/jasc/2613): Overheat Detection (1,796 reports)
- [JASC 2620](https://openairdocs.org/jasc/2620): Extinguishing System (702 reports)
- [JASC 2621](https://openairdocs.org/jasc/2621): Fire Bottle, Fixed (623 reports)
- [JASC 2622](https://openairdocs.org/jasc/2622): Fire Bottle, Portable (354 reports)

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