# SDR EIA2007062

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 2007
- Submitted: May 8, 2007
- Operation: Air carrier
- Aircraft: [N471EV](https://openairdocs.org/aircraft/N471EV), registered now
- Make and model: Boeing 747-200
- Registry model: [Boeing 747-200](https://openairdocs.org/model/boeing-747-200) (OpenAirDocs)
- Aircraft serial: 20651
- Aircraft time: 96,279 hours, 22,847 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Condition: Malfunctioned
- Location: Fire Detection
- 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/EIA2007062

## Discrepancy

AFTER TO FROM CYQX DURING CLIMB OUT APU FIRE DETECTION SYSTEM INDICATED A FALSE FIRE WARNING FOR 1 SECOND FOLLOWED BY "B" LOOP REMAINING ILLUMINATED.  AFTER APPROX 1 HR "B" LOOP EXTINGUISHED.  BOTH LOOPS TESTED NORMAL AFTER FALSE FIRE WARNING.

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