# SDR CKSA96061

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 20, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N103CK
- Make and model: Lkheed 1011385115
- Aircraft serial: 293C1212
- Engine: Rroyce RB211524B02
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Condition: Malfunctioned
- Location: Nr 2 Engine
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CKSA96061

## Discrepancy

NR 2 ENGINE A-FIRE DETECTION LOOP CAME ON STEADY IN CLIMB. SWITCHED TO B-LOOP AND TEST IAW OPS MANUAL CHECKED GOOD.  APPROXIMATELY 5 MINUTES LATER FIRE WARNING SOUNDED ON B-LOOP, SHUT NR 2 ENGINE DOWN IAW OPS MANUAL.  INSPECTED NR 2 ENGINE, NO DEFECTS FOUND.  SWAPPED APU AND NR 2 ENGINE FIRE DETECTOR CONTROL UNITS FOR FURTHER TROUBLESHOOTING.  APU FIRE DETECTION SWITCH CHECKS NORMAL AND PERFORMED HIGH POWER RUN ON NR 2 ENGINE, CHECKS NORMAL ON GROUND AT THIS TIME.

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