# SDR NACA2021112200001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 22, 2021
- Submitted: November 26, 2021
- Operation: Air carrier
- Aircraft: [N321CM](https://openairdocs.org/aircraft/N321CM), registered now
- Make and model: Boeing 767323
- Aircraft serial: 29431
- Aircraft time: 82,732 hours, 13,810 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: 3987865
- Part serial: 5222
- Condition: Unknown
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NACA2021112200001

## Discrepancy

FLIGHT DECK TEMP LIGHT CAME ON DURING CRUISE FLIGHT. FAULT CODE 21-90-63-00. MANUAL MODE WORKS, BUT THE COCKPIT TEMP BECAME VERY HIGH ON FINAL APPROACH. PERFORMED FAULT TREE 805 FIM 21-61 AND FOUND FLIGHT DECK TRIM AIR VALVE. REMOVED AND REPLACED FLIGHT DECK TRIM AIR VALVE IAW AMM 21-61-07 OPS CHECK GOOD. AC REMAINS ETOPS 180.

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