# SDR UALA2010121604593

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2010
- Submitted: December 30, 2010
- Operation: Air carrier
- Aircraft: [N206UA](https://openairdocs.org/aircraft/N206UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30212
- Aircraft time: 51,466 hours, 7,452 cycles
- Engine: Pwa PW4090
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 32153024
- Part serial: 65
- Condition: Faulted
- Location: Lt Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010121604593

## Discrepancy

BLEED PRSOV LT, LT ENGINE BLEED PRESSURE REGULATING SHUTOFF VALVE (PRSOV) FAILED OPEN OR CLOSED OR LT AIR SUPPLY AND CABIN PRESSURE CONTROLLER FAILURE. STATUS  MSG01- LATCHED CLIMB MODE DEPENDENT; PRESS REGULATING AND SOV (LT) FAILED CLOSED.  DB- AIR SUPPLY & CABIN PRESSURE CONTROLLER (LT) MSG-3610250 LATCHD CL MODE. REPLACED PRSOV IAW MM. OPS AND LEAK CHECKED NORMAL. MESSAGE CLEARED.

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