# SDR ASAA2022121441127

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 14, 2022
- Submitted: December 15, 2022
- Operation: Air carrier
- Aircraft: [N583AS](https://openairdocs.org/aircraft/N583AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35681
- Aircraft time: 53,662 hours, 15,685 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Message
- Condition: False Activation
- Location: Cockpit Temp
- Stage of operation: NR
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022121441127

## Discrepancy

CONTROL ZONE CONTROL CAB LIGHT ON RECALL RESETS, TEMP CONTROLLABLE. GROUNDED - YES. VERIFIED FAULT, ACCOMP PACK ZONE TEMP CONTROL BITE, #1 CONT NO FAULTS, #2 FAULTS FLT DECK TRIM VALVE. CLEARED FAULT, REACCOMPLISHED PACK ZONE TEMP CONT BITE BOTH CONT SHOW NO FAULTS. REF B737-800 AMM 21-61-00-700-806-002. ACCOMP TRIM VALVE TEST, TEST PASS REF AMM 21-51-10-740-001.

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