# SDR ASAA201805164641

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2018
- Submitted: May 16, 2018
- Operation: Air carrier
- Aircraft: [N469AS](https://openairdocs.org/aircraft/N469AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41702
- Aircraft time: 15,068 hours, 5,016 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Condition: Malfunctioned
- Location: Cockpit Temp
- Stage of operation: NR
- 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/ASAA201805164641

## Discrepancy

FLT DECK ZONE TEMP ILLUMINATED ON MASTER CAUTION RECALL.  ACFT GROUNDED.    FLT DECK TRIM VALVE FAULT NR 2 ZONE TEMP CONTROLLER,  RESET & TESTS NORMAL IAW FIM 21-62 TASK 832.  ETOPS SIGNIFICANT SYSTEM, GROUND VERIFICATION SUCCESSFUL.

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