# SDR UIEA2017102302000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2017
- Submitted: October 24, 2017
- Operation: Air carrier
- Aircraft: [N1997A](https://openairdocs.org/aircraft/N1997A), registered now
- Make and model: Boeing 767-33A
- Registry model: [Boeing 767-33A](https://openairdocs.org/model/boeing-767-33a) (OpenAirDocs)
- Aircraft serial: 27310
- Aircraft time: 92,678 hours, 18,301 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Control Valve
- Part number: 97980612
- Part serial: 991C
- Condition: Malfunctioned
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2017102302000

## Discrepancy

BLEED DUCT PRESS SURGES FROM 0-20 PSI WITH APU SUPPLYING BLEED AND ONE PACK ON.  REMOVED AND REPLACED SURGE CONTROL VALVE IAW AMM 49-50-30, LEAK CHECKED , NO LEAKS NOTED.

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