# SDR ASAA2022021337424

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 2022
- Submitted: February 16, 2022
- Operation: Air carrier
- Aircraft: [N566AS](https://openairdocs.org/aircraft/N566AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35182
- Aircraft time: 55,385 hours, 16,329 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022021337424

## Discrepancy

DURING MASTER CAUTION RECALL, THE AMBER CONT CAB ZONE TEMP LIGHT ILLUMINATED, AND EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. #2 ZONE TEMP CONT LOGGED TRIM VALVE FAULT, FAULT CLEARED & SYS CKS NML PER B737-800 AMM 21-61-00. GND VERIFICATION SUCCESSFUL.

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