# SDR UALA2013011700292

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2013
- Submitted: February 1, 2013
- Operation: Air carrier
- Aircraft: [N795UA](https://openairdocs.org/aircraft/N795UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26927
- Aircraft time: 67,200 hours, 9,596 cycles
- Engine: Pwa PW40903
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 32153024
- Part serial: 101
- Condition: Failed
- Location: Bleed Sys
- 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/UALA2013011700292

## Discrepancy

BLEED PRSOV LEFT FAILED CLOSED.  CHECKED ALL SENSE LINES TO & FROM PRSOV, PRSOVC AND INTERMEDIATE PRESSURE SENSOR, NO LEAKS ON LINES.  FOUND LEAK ON PRSOV DEACTIVATION PLUNGER.  REPLACED PRSOV PER AMM AND INTER PRESSURE SENSOR PER AMM.  ACCOMPLISHED HIGH POWER RUN ALL PRESSURES NORMAL.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.