# SDR UALA2012110606373

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 2012
- Submitted: December 20, 2012
- Operation: Air carrier
- Aircraft: N545UA
- Make and model: Boeing 757222
- Aircraft serial: 25323
- Aircraft time: 79,029 hours, 22,901 cycles
- Engine: Pwa PW2037
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Controller
- Part number: 33990046U2
- Part serial: 132
- Condition: Malfunctioned
- Location: Bleed Air Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012110606373

## Discrepancy

AT CRUISE LEFT DUCT PRESS AT 38 PSI & RIGHT AT 22 PSI.  PLACED ON MEL CW MEL DDP LOCKED VALVE CLOSED AND PILOT PLUG DISCONNECTED.  REPLACED HIGH STAGE PILOT CONTROLLER PER AMM.  REACTIVATED CONTROLLER REF MEL3611C.  RUN WITHIN LIMITS.

---
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.