# SDR 2001UALA01614

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 2001
- Submitted: September 5, 2001
- Operation: Air carrier
- Aircraft: N906UA
- Make and model: Boeing 737522
- Aircraft serial: 25006
- Aircraft time: 30,981 hours, 19,656 cycles
- Engine: Ge CFM56*
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Control Unit
- Condition: Malfunctioned
- Location: Fire Detection
- Stage of operation: CL
- 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/2001UALA01614

## Discrepancy

UNSCHEDULED LANDING DUE TO FIRE BELL ACTIVATION. REMOVED AND REPLACED FIRE OVERHEAT DETECTOR CONTROL UNIT AND ENG/APU FIRE CONTROL MODULE. PERFORMED OPERATIONAL TEST AND AIRCRAFT WAS RETURNED TO REVENUE SERVICE.

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