# SDR UIEA2020061701303

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 17, 2020
- Submitted: June 18, 2020
- Operation: Air carrier
- Aircraft: [N640GT](https://openairdocs.org/aircraft/N640GT), registered now
- Make and model: Boeing 767-3S1
- Registry model: [Boeing 767-3S1](https://openairdocs.org/model/boeing-767-3s1) (OpenAirDocs)
- Aircraft serial: 25221
- Aircraft time: 91,192 hours, 19,420 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Valve
- Part number: 97980612
- Part serial: P168C
- Condition: Malfunctioned
- Location: Apu Duct
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020061701303

## Discrepancy

APU DUCT PRESSURE LOW.  REMOVED AND REPLACED AIR SUPPLY BITE MODULE, NO HELP, APU DUCT PRESS STILL LOW.  LOCKED OUT VALVE.  IAW AMM 36-11-00  REMOVED AND REPLACED APU SURGE CONTROL VALVE IAW AMM 49-53-01. OPS CHECKED GOOD.

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