# SDR UIEA2017121802411

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2017
- Submitted: December 22, 2017
- Operation: Air carrier
- Aircraft: [N1049A](https://openairdocs.org/aircraft/N1049A), registered now
- Make and model: Boeing 767-36N
- Registry model: [Boeing 767-36N](https://openairdocs.org/model/boeing-767-36n) (OpenAirDocs)
- Aircraft serial: 30109
- Aircraft time: 78,355 hours, 10,079 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Control Valve
- Part number: 97980611
- Part serial: 2871
- Condition: Failed
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2017121802411

## Discrepancy

APU DUCT PRESSURE DROPPED TO 15 PSI DURING START.  REMOVED AND REPLACED SURGE CONTROL VALVE IAW AMM 49-53-01,  OPS CHECKED GOOD.

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