# SDR CALA2026032514828

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2026
- Submitted: March 25, 2026
- Operation: Air carrier
- Aircraft: [N768UA](https://openairdocs.org/aircraft/N768UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26919
- Aircraft time: 107,922 hours, 20,304 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Control Valve
- Part number: 8102211
- Part serial: ASSIGNED
- Condition: Faulted
- Location: Nr 1 A/C Pack
- Part time: 807,911 hours, 720,301 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026032514828

## Discrepancy

UNABLE TO CONTROL FLIGHT DECK TEMPERATURE. EXCESSIVE COLD 46F.  REMOVED AND REPLACED FLIGHT DECK ZONE TRIM AIR VALVE. REF. AMM 21-61-02-400-801. OPS CHECKED AND LEAK CHECK GOOD.

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