# SDR 2007UALA00104

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2007
- Submitted: January 23, 2007
- Operation: Air carrier
- Aircraft: [N105UA](https://openairdocs.org/aircraft/N105UA), registered now
- Make and model: Boeing 747451
- Aircraft serial: 26473
- Aircraft time: 51,321 hours, 6,270 cycles
- Engine: Pwa PW4056
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Fire Loop
- Part number: 2156656
- Condition: False Indication
- Location: Cargo Bay
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: F, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA00104

## Discrepancy

FLIGHT DIVERTED DUE TO FWD CARGO FIRE WARNING. SUPPLEMENTAL DATA UPDATE FWD CARGO RED FIRE WARNING ILLUM DURING CRUISE.   ARMED & DISCHARGED FIRE BOTTLES. ACFT DIVERTED TO APW WESTERN SAMOA. NO EVIDENCE OF FIRE DISCOVERED.  IDENTIFIED FAULTS IN BOTH A & B LOOPS.  REPLACED BOTH SMOKE DETECTORS.  OP CHECKED OK. RETURNED TO SERVICE.  SUSPECT MOISTURE CONDENSED IN SENSING TUBES LEADING TO FALSE SMOKE READINGS.  CARGO INCLUDED BEES & DRY-ICE COOLED CARGO.

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