# SDR KCSA07102

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2007
- Submitted: December 31, 2007
- Operation: Air carrier
- Aircraft: [N713CK](https://openairdocs.org/aircraft/N713CK), registered now
- Make and model: Boeing 747-2B4B
- Registry model: [Boeing 747-2B4B](https://openairdocs.org/model/boeing-747-2b4b) (OpenAirDocs)
- Aircraft serial: 21099
- Aircraft time: 69,497 hours, 18,229 cycles
- System (JASC): [2697 · Fire Protection System Wiring](https://openairdocs.org/jasc/2697)
- Part: Wire
- Condition: Chafed
- Location: Fire Detector
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA07102

## Discrepancy

NR 1 ENG FIRE DETECTOR LOOP "B" FLUCTUATED AND FAULT LIGHT CAME ON DURING CLIMB.  REPAIRED CHAFED WIRE JUST AFT OF LWR FWD LOOP IAW BSWP MM 20-10-13.  SYSTEM OPS CHECKS GOOD IAW B747 AMM 26-11-00 PG 504.

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