# SDR ASAA2023011861545

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 16, 2023
- Submitted: January 18, 2023
- Operation: Air carrier
- Aircraft: [N453AS](https://openairdocs.org/aircraft/N453AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36354
- Aircraft time: 33,966 hours, 10,693 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Light
- Condition: False Activation
- Location: Cockpit Temp
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023011861545

## Discrepancy

CONT CAB ZONE TEMP LIGHT ILLUMINATES ON MASTER CAUTION RECALL AND GOES OUT WHEN RESET. GROUNDED - YES. BITE SHOWED CONTROL CABIN TRIM AIR VALVE FAULT. ACCOMPLISHED B737-900 FIM 21-62 TASK 832. OPS CHECK GOOD.

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