# SDR DL75E091699

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2009
- Submitted: October 30, 2009
- Operation: Air carrier
- Aircraft: N750AT
- Make and model: Boeing 757212
- Aircraft serial: 23126
- Aircraft time: 70,136 hours, 32,894 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part serial: P2769
- Condition: Malfunctioned
- Location: Apu Bay
- Part time: 12,222 hours, 16,981 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL75E091699

## Discrepancy

ON PUSHBACK AFTER TURNING OFF PACKS APU SHUTDOWN WITH FAULT LIGHT.  RE-SET FAULT, TRIED AGAIN.  START WAS NORMAL.  BIT APU ECU.  CLEARED REVERSE FLOW MESSAGE PER FIM.  ETOPS CATEGORY 'E': PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS.

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