# SDR ASAA2014090309046

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 3, 2014
- Submitted: September 5, 2014
- Operation: Air carrier
- Aircraft: [N568AS](https://openairdocs.org/aircraft/N568AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35183
- Aircraft time: 29,072 hours, 9,037 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Controller
- Condition: Malfunctioned
- Location: Cabin 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/ASAA2014090309046

## Discrepancy

CONTROLLER FOR CABIN ZONE TEMP ILLUMINATES ON RECALL.  ACFT GROUNDED.  BITE TEST NR 1 & NR 2 CONTROLLER.  NR 2 CONTROLLER SHOWS "FLT DECK TRIM VALVE" FAULT.  CLEARED FAULT.  RAN BITE TWO MORE TIMES, OPS NORMAL.  RAN BOTH PACKS ADJUSTING TEMP COLD TO HOT, OPS NORMAL REF FIM 21-61, TASK 861. GROUND VERIFICATION GOOD.

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