# SDR UALA2012062203376

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 21, 2012
- Submitted: July 18, 2012
- Operation: Air carrier
- Aircraft: [N544UA](https://openairdocs.org/aircraft/N544UA), registered now
- Make and model: Boeing 757222
- Aircraft serial: 25322
- Aircraft time: 77,546 hours, 22,350 cycles
- Engine: Pwa PW2037
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Pilot Valve
- Part number: 33990046U2
- Part serial: 199
- Condition: Malfunctioned
- Location: Bleed Air Sys
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012062203376

## Discrepancy

CREW REPORTED NR 2 HIGH STAGE VALVE OPEN AND HIGH STAGE LIGHT ON AFTER TAKEOFF.  FLIGHT 505 RETURNED TO FIELD.  TROUBLESHOT PER FIM 36-10-00 FOUND HI STAGE PILOT OVER PRESSURE SENSOR TRIP A 85 PSI SHOULD TRIP 1 125-165PSI, REPLACED HI STAGE PILOT PER MM 36-11-08.

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