# SDR ASAA2013091195949

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 11, 2013
- Submitted: September 13, 2013
- Operation: Air carrier
- Aircraft: [N568AS](https://openairdocs.org/aircraft/N568AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35183
- Aircraft time: 25,574 hours, 7,958 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Light
- Condition: Illuminated
- Location: Cabin Temp
- Stage of operation: TX
- 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/ASAA2013091195949

## Discrepancy

CONTROL CABIN ZONE TEMP LIGHT ILLUMINATES ON RECALL, RESETS WITH MASTER CAUTION RESET.  ACFT GROUNDED.  VERIFIED CONTROL CABIN ZONE TEMP ANNUNCIATOR ILLUMINATOR ON RECALL. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST FOUND FLT DECK TRIM VALVE FAULT LT ON NR 2 CONTROLLER.  COMPLETED BITE TEST IAW AMM 21-61-00 BITE TEST SUCCESSFUL & FAULT LT CLEARED.  CONTROLLER CABIN ZONE TEMP ANNUNCIATOR REMAINS EXTINGUISHED ON RECALL. CHECKED HISTORY,  NO OCCURRENCES FOR THIS PROBLEM LAST 90 DAYS.  GROUND VERIFICATION SUCCESSFUL.

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