# SDR CKSA97315

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N707CK](https://openairdocs.org/aircraft/N707CK), registered now
- Make and model: Boeing 747269B
- Aircraft serial: 21541
- Engine: Pwa JT9D7J
- 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: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CKSA97315

## Discrepancy

NR 1 ENGINE A FIRE DETECTION LOOP FLUCTUATING (SPIKING INTO RED ZONE).  TRANSFERRED TO DMI NR 257 IAW MEL 26-1 CAT C PLACARD INSTALLED.  PERFORMED OPERATIONAL CHECK OF NR 1 ENG A LOOP, OPS CHECKS NORMAL ON GROUND.  THIS CLEARS DMI 257, PLACARDS REMOVED.

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