# SDR UIEA2016063000547

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 27, 2016
- Submitted: July 1, 2016
- Operation: Air carrier
- Aircraft: N648GT
- Make and model: Boeing 767-33AER
- Registry model: [Boeing 767-33AER](https://openairdocs.org/model/boeing-767-33aer) (OpenAirDocs)
- Aircraft serial: 27310
- Aircraft time: 89,704 hours, 17,403 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Valve
- Condition: Loose
- Location: Apu
- Stage of operation: TX
- How discovered: C
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2016063000547

## Discrepancy

APU BLEED PRESSURE DROPPED FOLLOWED BY PACK SURGE ON GROUND AFTER ENGINES SHUTDOWN.  PERFORMED PNEUMATIC LEAK TEST ON APU SENSOR LINES FOUND SURGE VALVE LOOSE.  RE-TIGHTENED IAW MM 49-53-02.

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