# SDR UALA2013062704513

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 26, 2013
- Submitted: July 25, 2013
- Operation: Air carrier
- Aircraft: [N216UA](https://openairdocs.org/aircraft/N216UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30549
- Aircraft time: 54,377 hours, 6,778 cycles
- Engine: Pwa PW40903
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: 8102212
- Part serial: 3618
- Condition: Faulty
- Location: 'E' Zone
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2013062704513

## Discrepancy

ZONE "E" TRIM VALVE.  ZONE "E" TRIM VALVE IS FAULTING FOR PAST SEVEN LEGS WITH MAINT MESSAGE 21-20006.  TROUBLESHOT IAW FIM 21-61, TASK 841.  REPLACED ZONE E TRIM VALVE.  VALVE TESTED NORMAL IAW FIM 21-61, TASK 841 AND AMM 21-61-02

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