# SDR KCSA2014072705

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2014
- Submitted: August 7, 2014
- Operation: Air carrier
- Aircraft: [N741CK](https://openairdocs.org/aircraft/N741CK), registered now
- Make and model: Boeing 747-4H6
- Registry model: [Boeing 747-4H6](https://openairdocs.org/model/boeing-747-4h6) (OpenAirDocs)
- Aircraft serial: 24315
- Aircraft time: 69,035 hours, 12,153 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Circuit Card
- Part number: 285U0084214
- Part serial: 000598
- Condition: Defective
- Location: Fire Warning
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA2014072705

## Discrepancy

AFTER DEPARTURE, FIRE WARNING BELL KEPT GOING OFF FOR 1 HOUR.  R & R MASTER MONITOR B PRINTED CIRCUIT CARD IAW MM 31-51-02.  SYS TEST GOOD IAW MM 31-51-00.  OPS CHECKED GOOD.

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