# SDR TWRA9854

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N623FF
- Make and model: Boeing 747-2F6B
- Registry model: [Boeing 747-2F6B](https://openairdocs.org/model/boeing-747-2f6b) (OpenAirDocs)
- Aircraft serial: 22382
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Condition: Malfunctioned
- Location: Nr 1 Engine
- Stage of operation: CR
- Nature of condition: N
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TWRA9854

## Discrepancy

DURING CRUISE NR 1 ENGINE 'B' LOOP INDICATED FIRE AND FAULT, NACELLE TEMP FLUX OFF SCALE HIGH AND LOW.  NR 1 ENGINE SHUT DOWN, FIRE BOTTLE 'A' DISCHARGED.  REPLACED FIRE BOTTLE 'A' PER MM 26-21-03 PAGE 401.  CONFIRMED FALSE FIRE WARNING 'B' LOOP.  DEFERRED PER 26-1-C.  REPAIRED WIRING ON 'A' LOOP SYSTEM.  OPERATIONAL CHECK NORMAL.  AIRCRAFT RETURN TO SERVICE.  (M)

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