# SDR ASAA2012082392769

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2012
- Submitted: August 27, 2012
- Operation: Air carrier
- Aircraft: [N532AS](https://openairdocs.org/aircraft/N532AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36346
- Aircraft time: 8,420 hours, 2,688 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Condition: Faulted
- Location: Cockpit Temp
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2012082392769

## Discrepancy

ON RECALL, MASTER CAUTION AIR CONDITIONING AND CONTROL CABIN ZONE TEMP LIGHTS ILLUMINATE.  ALL LIGHTS EXTINGUISH UPON PUSHING MASTER CAUTION RESET.  ACFT GROUNDED.  PERFORMED FIM TASK 21-62-00-810-833 CONTROL CABIN TRIM AIR VALVE (BACKUP) FAULT ISOLATION, LOGGED A FLIGHT DECK TRIM AIR VALVE ON CONTROLLER NR 2, RESET FAULT. GROUND VERIFICATION TESTS NORMAL.

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