# SDR 2008UALA02538

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 30, 2008
- Submitted: May 2, 2008
- Operation: Air carrier
- Aircraft: [N544UA](https://openairdocs.org/aircraft/N544UA), registered now
- Make and model: Boeing 757222
- Aircraft serial: 25322
- Aircraft time: 62,350 hours, 18,016 cycles
- Engine: Pwa PW2037
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Part number: MR49112
- Condition: Unknown
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA02538

## Discrepancy

APU FAILED TO START.  FAULT LIGHT ILLUMINATED AND EICAS MSG APU FAULT DISPLAYED.  APU HAD OVER 6,000 CYCLES AND WAS REPLACED.

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