# SDR UALA2012051802824

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 2012
- Submitted: June 15, 2012
- Operation: Air carrier
- Aircraft: [N211UA](https://openairdocs.org/aircraft/N211UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30217
- Aircraft time: 43,380 hours, 9,447 cycles
- Engine: Pwa PW4077
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 8102042
- Part serial: 368
- Condition: Failed
- Location: A/C Pack
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012051802824

## Discrepancy

PACK FLOW CONTROL VALVE LEFT STATUS MESSAGE.  REPLACED LOWER FLOW CONTROL VALVE PER MAINTENANCE TIP 21-005-R2 AND AMM 21-51-02 MAT AIR ON TEST PASSED.

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