# SDR UALA2012061503287

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 15, 2012
- Submitted: July 6, 2012
- Operation: Air carrier
- Aircraft: [N211UA](https://openairdocs.org/aircraft/N211UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30217
- Aircraft time: 43,679 hours, 9,508 cycles
- Engine: Pwa PW4077
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 32153024
- Part serial: 129
- Condition: Faulty
- Location: Right
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012061503287

## Discrepancy

BLEED PRSOV R RIGHT ENGINE BLEED PRESSURE REGULATING SHUT OFF VALVE (PRSOV) FAILED OPEN OR CLOSED OR RIGHT AIR SUPPLY AND CABIN PRESSURE CONTROLLER FAILURE. STATUS  MSG01- LATCHED DESCENT MODE DEPENDENT; PRESS REGULATING AND SOV (RIGHT) FAILED CLOSED. DB- AIR SUPPLY & CABIN PRESSURE CONTROLLER (R) MSG02- LATCHED DESCENT MODE DEPENDENT; PRESS REGULATING AND SOV (RIGHT) FAILED CLOSED. SUPPLEMENTAL DATA UPDATE LOCKED PRSOV IN CLOSED POSITION. (PARTS: 646-9036  MR36086 VALVE AY). REPLACED NR 2 ENGINE PRSOV PER MM, OPS CK GOOD.

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