# SDR ASAA2012120893425

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2012
- Submitted: December 11, 2012
- Operation: Air carrier
- Aircraft: [N538AS](https://openairdocs.org/aircraft/N538AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 41188
- Aircraft time: 2,179 hours, 661 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Light
- Condition: Malfunctioned
- Stage of operation: NR
- How discovered: O
- Nature of condition: P
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2012120893425

## Discrepancy

FWD CABIN ZONE TEMP CAUTION LIGHT INOPERATIVE.  COULD NOT DUPLICATE. ACCOMP FIM21-62/843.  NR 1 & 2 TEMP CONTROLLER BITE, FLT, & VERIFY ALL GO, NO FAULTS LOGGED.  OPERATED BOTH PACK FOR OVER A HOUR ZONE TEMP LT DID NOT COME BACK. GROUND VERIFICATION OF FWD ZONE TEMP, OPS CK NORMAL.

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