# SDR UALA2011080304048

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2011
- Submitted: September 6, 2011
- Operation: Air carrier
- Aircraft: [N779UA](https://openairdocs.org/aircraft/N779UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26941
- Aircraft time: 61,490 hours, 11,046 cycles
- Engine: Pwa PW4077
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Apu
- Part number: 38005501
- Part serial: P1008331
- Condition: Making Metal
- Stage of operation: TX
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011080304048

## Discrepancy

DURING GROUND OPS, APU AUTO SHUTDOWN.    DRAIN CHIP DETECTOR INSPECTED AND FOUND FULL OF METAL PARTICLES.   REPLACED APU.

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