# JASC 2612: Fire Detection

- Type: JASC system/component code (FAA)
- ATA chapter: 26 Fire Protection
- Title in the code table: FIRE DETECTION
- Service difficulty reports: 7,459
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=24
- Page: https://openairdocs.org/jasc/2612

## What it covers

The system used to sense and indicate the presence of fire in all protected areas of the aircraft. Typical parts are detector, sensor, wiring, relay, amplifier, test circuit, etc. Reporting the specific location of a defective part is essential.

## Service difficulty reports (7,459, newest 50)

- [SDR ABXA20261020476](https://openairdocs.org/sdr/ABXA20261020476), Oct 20, 2026: Boeing 767306. LAMP. INOPERATIVE. DURING FIRE TEST, R ENG OVHT DID NOT ILLUMINATE DURING TEST. MTC REPLACED THE LAMP FOR KORRY SWITCH IAW AMM 33-13-00. OP (N1229A)
- [SDR YENA2026101900987](https://openairdocs.org/sdr/YENA2026101900987), Oct 17, 2026: Airbus A321271NX. FIRE LOOP. FAULTED. FLT 1621, LHR-BOS. (ETOPS) ENG NR 2 FIRE LOOP B FAULT ( ENGINE FIRE DETECTION SYSTEMS LOOP B."(SUPPLEMENTAL INFORMATION  (N4074J)
- [SDR SWAA2026102007959](https://openairdocs.org/sdr/SWAA2026102007959), Oct 16, 2026: Boeing 7377H4. FIRE WARNING. INTERMITTENT. AFT CARGO FIRE DETECTION, FIRE LIGHT ON. INTERMITTENTLY HAPPENED TWICE. OK TO CONTINUE ON MEL 26-19-01, SP1. PERFORMED F (N473WN)
- [SDR ABXA20261015469](https://openairdocs.org/sdr/ABXA20261015469), Oct 15, 2026: Boeing 7673P6. FIRE LOOP. FAULTED. RIGHT ENG FIRE LOOP 1 STATUS MSG DISPLAYED. MX DEFFERED R ENG FIRE LOOP 1 IAW ABX AIR MEL 26-11-1-1 PLACARDS INSTALLED M (N762CK)
- [SDR ABXA20261015468](https://openairdocs.org/sdr/ABXA20261015468), Oct 15, 2026: Boeing 767338. FIRE DETECTOR. ILLUMINATED. SECTION A AT ZONE 8 ON CARGO FIRE DETECTION LIGHT BAR IS ILLUMINATED AMBER. MX DEFERRED ZONE 8 AIR DETECTOR OF MAIN CARG (N363CM)
- [SDR 2026FA0000831](https://openairdocs.org/sdr/2026FA0000831), Oct 13, 2026: Urocop EC135P2. FIRE WARNING. FALSE ACTIVATION. AFTER DEPARTURE WITHIN 3 MILES OF (1R4), WHILE EN ROUTE TO SENDING FACILITY AN AUDIBLE FIRE TONE SOUNDED FOR LESS THAN A (N911XM)
- [SDR UIEA2026102300993](https://openairdocs.org/sdr/UIEA2026102300993), Oct 12, 2026: Boeing 74745E. FIRE WARNING. FALSE ACTIVATION. CARGO FIRE AFT MASTER WARNING AFTER LANDING. PERFORMED LWR CARGO SMOKE DETECTION OPS TEST, TEST PASSED IAW AMM 26-16-00. (N472MC)
- [SDR DALA2026101405644](https://openairdocs.org/sdr/DALA2026101405644), Oct 12, 2026: Boeing 737932ER. FIRE WARNING. FALSE ACTIVATION. NR 2 ENGINE START LEVER, RED LIGHT ILLUMINATED SEVERAL TIMES THROUGHTOUT FLIGHT, STAYING ON FOR APPROX 4 SECS EACH TIME. (N909DN)
- [SDR ABXA20261011467](https://openairdocs.org/sdr/ABXA20261011467), Oct 11, 2026: Boeing 7673P6. FIRE LOOP. FALSE INDICATION. AFTER BLOCK OUT STATUS MESSAGE R ENG FIRE LP2 APPEARED. DEFERRED R ENG FIRE LP 2 IAW MEL 26-11-1-1. NO MX ACTION REQUIRE (N763CK)
- [SDR ABXA20261008463](https://openairdocs.org/sdr/ABXA20261008463), Oct 8, 2026: Boeing 767306. FIRE WARNING. FALSE ACTIVATION. AFTER BLOCKOUT STATUS MSG " MN CARGO LOOP 2". PERFORMED AFOLTS TEST IAW AMM 26-10-00. NO FAULTS FOUND. MESSAGE CLEARED A (N1427A)
- [SDR KCSA2026100859](https://openairdocs.org/sdr/KCSA2026100859), Oct 8, 2026: Boeing 7474H6. FIRE WARNING. FALSE ACTIVATION. CARGO FIRE AFT. CORRECTIVE ACTION: NO SIGNS FIRE NOTED AND SUSPECTED ISSUE WAS DRY ICE CARRIED IAW CONDITIONAL INSPECTIO (N740CK)
- [SDR ABXA20261008462](https://openairdocs.org/sdr/ABXA20261008462), Oct 8, 2026: Boeing 7673P6. WARNING MESSAGE. FALSE ACTIVATION. RIGHT ENGINE FIRE LOOP 2 STATIC MSG. MTC PERFORMED OPS TEST OF RIGHT ENGINE FIRE LOOP IAW AMM 26-11-00, OPS TEST GOOD. A (N763CK)
- [SDR AALA202610109893](https://openairdocs.org/sdr/AALA202610109893), Oct 7, 2026: Airbus A321211. FIRE LOOP. FALSE INDICATION. AIRCRAFT WAS GROUNDED: ENG 1 FIRE ECAM INDICATION TWICE ON CLIMB OUT OF 8,000 FEET. BOTH TIMES CLEARED WITHIN A COUPLE O (N155UW)
- [SDR FDEA202610061481](https://openairdocs.org/sdr/FDEA202610061481), Oct 6, 2026: Doug MD11F. FIRE LOOP. FAULTED. FIRE DET 2 FAIL ILLUMINATED STEADY DURING FLIGHT AT CRUISE ALTITUDE. FIRE DET 2 FAIL LATER FLICKERED ON AND OFF FOR THE  (N617FE)
- [SDR CALA2026100720197](https://openairdocs.org/sdr/CALA2026100720197), Oct 1, 2026: Boeing 737924ER. MODULE. FAULTED. REJECTED TAKEOFF AT 110KIAS DUE TO FIRE WARNING. PERFORMED ENG & APU FIRE DETECT CONTROL MODULE BITE IAW AMM 26-10-00-71 (N75435)
- [SDR ABXA20260930443](https://openairdocs.org/sdr/ABXA20260930443), Sep 30, 2026: Boeing 767381. FIRE LOOP. WARNING MESSAGE. AFTER DEPARTURE STATUS MESSAGE R ENG FIRE LP 2 DISPLAYED. MTC DEFFERED REC FIRE LP 1 PER MEL 26-11-1-1 MX PROCEDURES C/W (N391CM)
- [SDR SWAA2026100229769](https://openairdocs.org/sdr/SWAA2026100229769), Sep 28, 2026: Boeing 7378. CONTROL PANEL. INOPERATIVE. STARTED APU ON GROUND AFTER LANDING, WITH BLUE APU GEN OFF LIGHT ON. ATTEMPTED TO CONNECT APU GEN. ENGINE GENERATORS DIS (N8780Q)
- [SDR ABXA20260926438](https://openairdocs.org/sdr/ABXA20260926438), Sep 26, 2026: Boeing 76731B. FIRE WARNING. FALSE ACTIVATION. MAIN CARGO FIRE WARNING GOING ON AND OFF. PERFORMED MAIN CARGO INSPECTION IAW AMM 26-14-00 NO FIRE OR SMOKE NOTED PERFOR (N1361A)
- [SDR HNAA2026092800913](https://openairdocs.org/sdr/HNAA2026092800913), Sep 26, 2026: Emb EMB145LR. FIRE DETECTOR. FAILED. E2 FIRE DETECT FAIL ON EICAS IN FLIGHT. R & R ENGINE FIRE DETECTOR ON E2 IRW AMM 26-11-01. OPS CHECK GOOD. OK FOR SERVIC (N939AE)
- [SDR CALA2026092419789](https://openairdocs.org/sdr/CALA2026092419789), Sep 24, 2026: Boeing 737824. FIRE DETECTOR. FALSE ACTIVATION. AFT CARGO FIRE INDICATED PERFORMED QRC RETURNED TO KCMH VISUALLY INSPECTED AFT PIT, NO EVIDENCE OF ACTUAL FIRE OR SMOKE  (N77296)
- [SDR ABXA20260924434](https://openairdocs.org/sdr/ABXA20260924434), Sep 24, 2026: Boeing 767306. WARNING MESSAGE. FALSE ACTIVATION. MN CARGO LOOP STATUS MESSAGE. PERFORMED AFOLTS SYSTEM CHECK IAW B767 AMM 26-10-00 NO FAULTS AT THIS TIME. A/C RETURNED T (N1427A)
- [SDR YENA2026092500900](https://openairdocs.org/sdr/YENA2026092500900), Sep 23, 2026: Airbus A321271NX. FIRE LOOP. FAULTED. FLT 8357, BOS-JFK. (ETOPS) NR 2 ENG FIRE LOOP B FAULT DURING TAXI ( ENGINE FIRE DETECTION SYSTEMS LOOP B ). OPEN (N4074J)
- [SDR CALA2026092419798](https://openairdocs.org/sdr/CALA2026092419798), Sep 23, 2026: Boeing 737824. FIRE DETECTOR. FALSE ACTIVATION. AFT CARGO FIRE AT FL350. RAN QRC AND NNC. BELL WENT OFF 10-12 TI MES EVEN AFTER DISCHARGE. PERFORMED CEU BITE PROCEDURE  (N77296)
- [SDR I5PA2026092368813](https://openairdocs.org/sdr/I5PA2026092368813), Sep 23, 2026: Boeing 757230. FIRE WARNING. FALSE ACTIVATION. FIRE WARNING ON FINAL WHEN APPROACH MODE WAS ARMED. PERFORMED APPLICABLE FIM, NO FAULTS FOUND. ISSUE FOUND TO BE A FALSE (N688SL)
- [SDR CALA2026092419800](https://openairdocs.org/sdr/CALA2026092419800), Sep 21, 2026: Boeing 737824. MODULE. FAULTED. ON TAKEOFF ROLL ENCOUNTERED AN OVHT/DET LIGHT AS WELL AS A FIRE WARN LIGHT AND BELL. ALL OF THE LIGHTS ILLUMINATED JUST  (N76532)
- [SDR HYIA20260923001](https://openairdocs.org/sdr/HYIA20260923001), Sep 20, 2026: Tecnam P2012. FIRE DETECTOR. FAILED. PILOT REPORTED RIGHT ENGINE FIRE CAS MESSAGE ON AFTER START UP. MAINTENANCE INSPECTED AND TROUBLESHOT TO ACTIVE FAILED R (N288CA)
- [SDR SWAA2026092178980](https://openairdocs.org/sdr/SWAA2026092178980), Sep 19, 2026: Boeing 7377H4. LAMP. INOPERATIVE. F/O SIDE FIRE WARNING LIGHT ON GLARESHIELD INOP. REPLACED THE LAMP IN THE MASTER FIRE WARNING LIGHT IAW AMM 33-11-00. OP (N903WN)
- [SDR YENA2026091700808](https://openairdocs.org/sdr/YENA2026091700808), Sep 17, 2026: Airbus A321271NX. FIRE LOOP. FAULTED. FLT 263, JFK-SEA. (ETOPS) ON CLIMB OUT ENG 1 FIRE LOOP A FAULT ( ENGINE FIRE DETECTION SYSTEMS LOOP A ). OPEN (N4074J)
- [SDR ABXA20260914403](https://openairdocs.org/sdr/ABXA20260914403), Sep 14, 2026: Boeing 76731B. FIRE DETECTOR. FALSE ACTIVATION. HAD MAIN CARGO FIRE BELL/ LIGHTS, NO SMOKE OR FIRE, QRH COMPLETED, EXTERIOR INSPECTION OPS NORM, FIRE RESCUE WILL INSPEC (N1361A)
- [SDR ABXA20260913405](https://openairdocs.org/sdr/ABXA20260913405), Sep 13, 2026: Boeing 767300. FIRE LOOP. FAULTED. AFTER PRESSURIZE FOR PUSH "R ENG FIRE LP 1" STATUS MSG ILLUMINATED. PERFORMED ENG FIRE LOOP TEST IAW AMM 26-11-00 WITH N (N677AZ)
- [SDR SWAA2026091624496](https://openairdocs.org/sdr/SWAA2026091624496), Sep 12, 2026: Boeing 7378H4. FIRE LOOP. NO TEST. CREW REPORTED, FIRE WARNING/OVERHEAT-B LOOP WILL NOT TEST, OK TO CONTINUE. PER MEL 26-2-01XB. NR 1 ENG REMOVED AND REPLA (N8637A)
- [SDR SWAA2026091661201](https://openairdocs.org/sdr/SWAA2026091661201), Sep 12, 2026: Boeing 7377BD. FIRE WARNING. NO TEST. DURING FIRE WARNING TEST, NO FIRE BELL SOUNDED AND MAIN FIRE WARNING CUTOUT LIGHTS ON CAPT AND FO SIDE FAILED TO ILLUMIN (N7732A)
- [SDR SWAA2026091610565](https://openairdocs.org/sdr/SWAA2026091610565), Sep 12, 2026: Boeing 7377H4. SWITCH. INOPERATIVE. CAPTAIN MASTER FIRE WARNING LIGHT DOES NOT SILENCE BELL. OK TO CONT. PER MEL 26-10-02 SP1 AUTH# 339621. REMOVED AND REPL (N477WN)
- [SDR ASAA2026091066825](https://openairdocs.org/sdr/ASAA2026091066825), Sep 10, 2026: Airbus A321271NX. FIRE DETECTOR. FAULTED. ATB VERIFICATION FLIGHT UNSUCCESSFUL. ENG 1 FIRE LOOP A FAULT DURING CLIMB. GROUNDED - YES. ATB ACKNOWLEDGED BY MX. ENG  (N204HA)
- [SDR ABXA20260906396](https://openairdocs.org/sdr/ABXA20260906396), Sep 6, 2026: Boeing 76731K. WARNING MESSAGE. FALSE ACTIVATION. DURING APPROACH MESSAGE "FIRE/ OVHT SYS" ILLUMINATED , MTX PERFORMED AFOLTS TEST IAW B767 AMM 26-10-00. OPS CHECK GOOD.  (N1489A)
- [SDR YENA2026090800730](https://openairdocs.org/sdr/YENA2026090800730), Sep 5, 2026: Airbus A321271NX. WARNING MESSAGE. INTERMITTENT. FLT 346, BCN-BOS. (ETOPS) SEVERAL NR 1 ENG FIRE LOOP A FAULT MSGS DURING FLIGHT, THEY CLEARED THEMSELVES BUT KEPT POPPIN (N4074J)
- [SDR YENA2026090800729](https://openairdocs.org/sdr/YENA2026090800729), Sep 4, 2026: Airbus A321271NX. FIRE LOOP. FAULTED. FLT# 73, JFK-EDI. (ETOPS) RECEIVED A POST FLIGHT MX REPORT ENG 2 FIRE LOOP B FAULT, OPEN (N2193J)
- [SDR I5PA2026083068808](https://openairdocs.org/sdr/I5PA2026083068808), Aug 30, 2026: Boeing 757230. CIRCUIT CARD. INOPERATIVE. ETOPS SIGNIFICANT REPORT, LT ENGINE FIRE LOOP 1 STATUS MESSAGE. REPLACED AFOLTS NR 1 CARD IAW AMM. (N688SL)
- [SDR DALA2026082604858](https://openairdocs.org/sdr/DALA2026082604858), Aug 25, 2026: Boeing 7379GPER. FIRE DETECTOR. DAMAGED. IFSD- DECLARED AN EMERGENCY DUE TO LT ENGINE OVERHEAT WARNING. T/S & FOUND DAMAGE FIRE LOOP. R & R BOTH ENGINE FIRE EXTI (N950DZ)
- [SDR ABXA20260825374](https://openairdocs.org/sdr/ABXA20260825374), Aug 25, 2026: Boeing 7673P6. FIRE LOOP. FAULT MESSAGE. R ENG FIRELOOP 2 STATUS MSG. DEFERRED PER MEL ABX-26-11-1-1. A/C RETURNED TO SERVICE. (N764CK)
- [SDR IPXA2026082480215](https://openairdocs.org/sdr/IPXA2026082480215), Aug 23, 2026: Boeing 74745E. FIRE WARNING. FALSE ACTIVATION. FIRE CARGO FWD EICAS MSG ON SHORT FINAL EXTINGUISH AFTER APPROX 15 SECONDS NO STATUS MSG ,CMC MSG SHOWS CARGO FWD. -4 LO (N578UP)
- [SDR UIEA2026082200785](https://openairdocs.org/sdr/UIEA2026082200785), Aug 22, 2026: Boeing 74745E. FIRE WARNING. FALSE ACTIVATION. FALSE FIRE WARING AFT LOWER. NOTED BY MX. PERFORMED FIRE DETECTION SYSTEM TEST IAW AMM 26-16-00, TEST PASSED. NO FURTHER (N473MC)
- [SDR SWAA2026082526970](https://openairdocs.org/sdr/SWAA2026082526970), Aug 21, 2026: Boeing 737824. FIRE LOOP. INOPERATIVE. NR 1 ENGINE, FIRE DETECTOR LOOP B INOPERATIVE. OK TO CONTINUE IAW MEL 26-2-01 XB. NR 1 ENGINE 34B& 34 LOOPS, ENGINE OVER (N8575Z)
- [SDR SWAA2026082543156](https://openairdocs.org/sdr/SWAA2026082543156), Aug 21, 2026: Boeing 737752. FIRE LOOP. FAULTED. NR 1 ENGINE FIRE LOOP B FAULTED. OK TO CONTINUE IAW MEL 25-2-01XBSP1. REMOVED AND REPLACED ENGINE AND APU FIRE CONTROL P (N7848A)
- [SDR UIEA2026081800774](https://openairdocs.org/sdr/UIEA2026081800774), Aug 17, 2026: Boeing 74745E. FIRE WARNING. FALSE ACTIVATION. ON LANDING EICAS WARNING MESSAGE "FIRE MAIN DECK AFT". (EMERGENCY WAS DECLARED BY THE FLIGHT CREW) FOLLOWED FIM 26-16 TA (N473MC)
- [SDR AYPA20260917001](https://openairdocs.org/sdr/AYPA20260917001), Aug 14, 2026: Skrsky S76D. FIRE DETECTOR. FALSE ACTIVATION. DURING CRUISE FLIGHT, A MOMENTARY INSTANCE OF THE #1 ENG FIRE WARNING SYSTEM ILLUMINATED. NO SECONDARY OR CONFIRMING IND (N676FX)
- [SDR ASAA2026081466337](https://openairdocs.org/sdr/ASAA2026081466337), Aug 14, 2026: Airbus A321271NX. SMOKE DETECTOR. NO DISCREPANCY. INFO TO MX: SMOKE LAVATORY SMOKE ECAM DURING CRUISE, F/A REPORTS PAX VAPING IN MID CABIN LAC ON A/C L SIDE. NO VISABLE D (N213HA)
- [SDR AALA202608174992](https://openairdocs.org/sdr/AALA202608174992), Aug 13, 2026: Boeing 737823. FIRE DETECTOR. FAULTY. AIRCRAFT WAS GROUNDED: DURING CLIMB OUT NUMBER ONE ENGINE OVERHEAT LIGHT ILLUMINATED. AIRCRAFT HAS MULTIPLE MEL'S CONCER (N850NN)
- [SDR U2RA2026081700049](https://openairdocs.org/sdr/U2RA2026081700049), Aug 12, 2026: Boeing 747428. CIRCUIT CARD. FAULTED. ON GROUND - ERRONEOUS FIRE WARNINGS - CLEANED AND RESEATED AFOLTS INTERFACE CARD. SYSTEM OPERATION NORMAL PER AIRCRAFT M (N952CA)
- [SDR ABXA20260808353](https://openairdocs.org/sdr/ABXA20260808353), Aug 8, 2026: Boeing 767316. WARNING MESSAGE. FALSE ACTIVATION. R ENG FIRE LOOP 2 STATUS MSG. PERFORMED ENGINE FIRE DETECTION SYSTEM OPS TEST PER AMM 26-11-00. OPS TEST PASSED, MSG CLE (N227CY)

All 7,459: https://openairdocs.org/jasc/2612/reports.md

## Other codes in chapter 26

- [JASC 2600](https://openairdocs.org/jasc/2600): Fire Protection System (301 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 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)
- [JASC 2697](https://openairdocs.org/jasc/2697): Fire Protection System Wiring (1,399 reports)

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