# SDR UIEA2021041800932

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2021
- Submitted: April 22, 2021
- Operation: Air carrier
- Aircraft: [N663GT](https://openairdocs.org/aircraft/N663GT), registered now
- Make and model: Boeing 767324
- Aircraft serial: 27568
- Aircraft time: 104,933 hours, 20,336 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Malfunctioned
- Stage of operation: TX
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021041800932

## Discrepancy

APU FAILED PRIOR TO PUSH(<P>NO RELATED FAULTS ON EICAS, APU BITE SHOWS "REVERSE" FLOW FAULT. PERF APU BITE, NO FAULTS PERF. APU OPS CHECK IAW AMM 49-11-00 TEST OK. OK FOR SVC.</P>)

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