# SDR UALA2013032802012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2013
- Submitted: May 17, 2013
- Operation: Air carrier
- Aircraft: [N655UA](https://openairdocs.org/aircraft/N655UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25393
- Aircraft time: 86,684 hours, 13,818 cycles
- Engine: Pwa PW4060
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Switch
- Condition: Faulty
- Location: Apu
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2013032802012

## Discrepancy

APU FAULT NO START 2 ATTEMPTS.  APU INOP. DF. REF MEL 49 11D. INF-  :BIT APUC FAULTING THE FAN VALVE. INF-  :IPC 49-51-00-00K PAGE 1 ITEM 100. (PCN 645-3645).  RPL-  :DISREGARDED NUISANCE OIL COOLER FAN AIR VALVE.  VALVE HAS BEEN ELIMINATED REF POST SB 49-73-91.  REPLACED LOP SWITCH REF AMM 49-27-00.

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