# SDR ASAA2023021741980

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2023
- Submitted: February 20, 2023
- Operation: Air carrier
- Aircraft: [N512AS](https://openairdocs.org/aircraft/N512AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39043
- Aircraft time: 51,751 hours, 15,229 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/ASAA2023021741980

## Discrepancy

CONT CAB ZONE TEMP ILLUMINATES ON RECALL & RESETS WITH MC RESET. GROUNDED - YES. ACCOMPLISHED BITE CK ON TEMP CONTROLLERS, FOUND FLT DECK TRIM VALVE FAULT, RESET FAULT. ACCOMPLISHED TEMP CONTROLLER OP CK NO FAULTS NOTED, REF B737-800 AMM 21-61-00-700-506-002 AND 21-61-00-700-807-002.

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