# SDR UALA2012082304702

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 22, 2012
- Submitted: August 24, 2012
- Operation: Air carrier
- Aircraft: [N105UA](https://openairdocs.org/aircraft/N105UA), registered now
- Make and model: Boeing 747451
- Aircraft serial: 26473
- Aircraft time: 74,691 hours, 8,806 cycles
- Engine: Pwa PW4056
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Control Unit
- Part number: 1167007141
- Part serial: 3386
- Condition: Malfunctioned
- Location: Cabin
- Stage of operation: IN
- 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/UALA2012082304702

## Discrepancy

CONTINUOUS CHIME FROM DOOR-3L LAV FORWARD UNIT.  REPLACED IOEU ABOVE LAV.  SYSTEM OPS OKAY.

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