# SDR ASAA2017122022963

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 2017
- Submitted: December 21, 2017
- Operation: Air carrier
- Aircraft: [N461AS](https://openairdocs.org/aircraft/N461AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36363
- Aircraft time: 14,883 hours, 4,896 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Light
- 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/ASAA2017122022963

## Discrepancy

CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED, EXTINGUISHED WITH M/C RESET. ACFT  GROUNDED.  ACCOMPLISHED PACK TEMP CONTROL BITE IAW FIM 21-61 TASK 801. LAST FLIGHT SHOWS TRIM VALVE FAULT.  VERIFY SHOWS NO CURRENT FAULTS.  RESET, CONTROL CABIN TEMP OPS NORMAL.  GROUND VERIFICATION ACCOMPLISHED.

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