# SDR ASAA2021010333809

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2021
- Submitted: January 6, 2021
- Operation: Air carrier
- Aircraft: [N585AS](https://openairdocs.org/aircraft/N585AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35683
- Aircraft time: 49,251 hours, 14,835 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/ASAA2021010333809

## Discrepancy

ZONE TEMP LIGHT ON CONTROL CABIN ILLUMINATED ON RECALL.  GROUNDED-YES.  VERIFIED NO CURRENT FAULT.  HISTORY SHOWS FLT DECK TRIM VALVE FAULT CLEARED.  CW B737-800 FIM 21-62 TASK 833 AND 21-61 TASK 861 FOR AUTO TEMP CONTROL.  NO CONT CAB ZONE TEMP ON RECALL.  INTERMITTENT FAULT.

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