# SDR ASAA2022111040737

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2022
- Submitted: November 14, 2022
- Operation: Air carrier
- Aircraft: [N538AS](https://openairdocs.org/aircraft/N538AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 41188
- Aircraft time: 37,829 hours, 11,060 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Condition: Faulted
- Location: Cabin Temp
- Stage of operation: NR
- 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/ASAA2022111040737

## Discrepancy

CONT CAB ZONE TEMP CAUTION, DID QRH, WENT AWAY, COMES ON RECALL ONLY NOW. GROUNDED - YES. RESET CONT CABIN TRIM VALVE FAULT. OBSERVED TAV DURING PZTC BITE. NO ABNORMALITIES NOTED. OP CK NORMAL SEVERAL TIMES. REF B737-800 FIM 21-62 TASK 832.

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