# SDR UIEA2016112800907

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 28, 2016
- Submitted: November 29, 2016
- Operation: Air carrier
- Aircraft: [N645GT](https://openairdocs.org/aircraft/N645GT), registered now
- Make and model: Boeing 767324
- Aircraft serial: 27393
- Aircraft time: 89,669 hours, 17,066 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Pressure Switch
- Condition: Failed
- Location: Gcu
- Stage of operation: IN
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2016112800907

## Discrepancy

APU ECU DISPLAYS MINI FLAG.  REMOVED & REPLACED THE GCU DIFFERENTIAL PRESSURE SWITCH IAW MM 49-27-15.  OPS AND LEAK CHECKED GOOD.

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