# SDR ASAA2015051911781

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2015
- Submitted: May 21, 2015
- Operation: Air carrier
- Aircraft: [N537AS](https://openairdocs.org/aircraft/N537AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35204
- Aircraft time: 13,164 hours, 3,928 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Light
- Condition: False Activation
- Location: Cabin 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/ASAA2015051911781

## Discrepancy

CONTROLLER CABIN ZONE TEMP LIGHT ILLUMINATES ON MASTER CAUTION RECALL, LIGHT GOES OUT ON RESET.  ACFT GROUNDED.  PERFORMED PACK/ZONE TEMP CONTROLLER BITE REF FIM 21-62, TASK 801.  PREVIOUS FLT LOGGED, FLT DECK TRIM AIR VALVE.  NOT CURRENTLY FAULTING ANY COMPONENT. PERFORMED OPS CK OF TRIM AIR VALVE REF MM 21-62-01-400-801. OPS CK GOOD. GROUND VERIFICATION SUCCESSFUL.

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