# SDR KCSA2021031907

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2021
- Submitted: March 23, 2021
- Operation: Air carrier
- Aircraft: [N701CK](https://openairdocs.org/aircraft/N701CK), registered now
- Make and model: Boeing 747-4B5F
- Registry model: [Boeing 747-4B5F](https://openairdocs.org/model/boeing-747-4b5f) (OpenAirDocs)
- Aircraft serial: 26416
- Aircraft time: 84,678 hours, 15,259 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Warning
- Condition: False Activation
- Location: Main Deck
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KCSA2021031907

## Discrepancy

MAIN DECK FIRE WARNING SYSTEM GAVE FALSE INDICATION IN FLIGHT, NO FIRE ACTUALLY OCCURED.  PERFORMED FIRE/OVERHEAT PROTECTION GROUND TEST IAW B747-400 AMM 26-11-00. TEST PASSED NO DEFECTS AT THIS TIME.

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