# SDR UALA2009071402080

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 14, 2009
- Submitted: July 16, 2009
- Operation: Air carrier
- Aircraft: [N661UA](https://openairdocs.org/aircraft/N661UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 27158
- Aircraft time: 69,451 hours, 11,373 cycles
- Engine: Pwa PW4060
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Relay
- Condition: Failed
- Location: Apu
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009071402080

## Discrepancy

APU FAILURE, RTFL.  REPLACED RELAYS K176 AND K547.  ALSO REPLACED APU DOOR ACTUATOR AND OPERATED APU BEFORE AND AFTER DOOR ACTUATOR REPLACEMENT AND 6 SUCCESSFUL STARTS ACCOMPLISHED.

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