# SDR UALA2011102405762

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2011
- Submitted: November 18, 2011
- Operation: Air carrier
- Aircraft: [N651UA](https://openairdocs.org/aircraft/N651UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25389
- Aircraft time: 84,987 hours, 13,567 cycles
- Engine: Pwa PW4060
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Module
- Part number: 285T003425
- Part serial: 1
- Condition: Malfunctioned
- Location: Left
- 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/UALA2011102405762

## Discrepancy

ALTITUDE ALERT CHIME GOES OFF RANDOMLY THROUGHOUT FLIGHT IN CRUISE.  REPLACED LEFT SIREN-OWL MODULE M999, REF MM.

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