# SDR UALA2012041502291

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2012
- Submitted: May 25, 2012
- Operation: Air carrier
- Aircraft: N545UA
- Make and model: Boeing 757222
- Aircraft serial: 25323
- Aircraft time: 77,320 hours, 22,404 cycles
- Engine: Pwa PW2037
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: S210T130608
- Part serial: 23
- Condition: Defective
- Location: Left
- Stage of operation: DE
- 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/UALA2012041502291

## Discrepancy

LEFT PACK OFF IN DESCENT.    REPLACED LEFT FLOW CONTROL VALVE.  RAN LEFT ENGINE FLOW CONTROL VALVE.  OPS CHECKED NORMAL.

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