# SDR IPXA2023082826833

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 25, 2023
- Submitted: August 28, 2023
- Operation: Air carrier
- Aircraft: [N356UP](https://openairdocs.org/aircraft/N356UP), registered now
- Make and model: Boeing 767-34AF
- Registry model: [Boeing 767-34AF](https://openairdocs.org/model/boeing-767-34af) (OpenAirDocs)
- Aircraft serial: 37869
- Aircraft time: 25,044 hours, 9,216 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Part number: UNKNOWN
- Part serial: NA
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- 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/IPXA2023082826833

## Discrepancy

*** SUPPLEMENTAL SDR *** APU GEN INTERMITTENTLY CUTS ON AND OFF*OII 2* PERFORMED APU BITE PROCEDURE IAW FIM TASK 49-11 FAULT TREE 803. T/S TO FIGURE 103 SH 7 TABLE B 'NORMAL STOP SIG' MESSAGE. FURTHER T/S TP FIM49-11-00/101 FIG 133 FOUND SYS SATIS. APU OPS CK'D NML IAW AMM 49-41-00/001. PLACARD REMOVED. DMP REVERSED.

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