# SDR ASAA12511146

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2012
- Submitted: February 27, 2012
- Operation: Air carrier
- Aircraft: [N516AS](https://openairdocs.org/aircraft/N516AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39044
- Aircraft time: 11,967 hours, 3,894 cycles
- System (JASC): [2161 · Cabin Temperature Controller](https://openairdocs.org/jasc/2161)
- Part: Controller
- Condition: Malfunctioned
- Location: Cabin Temp
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA12511146

## Discrepancy

CONT CABIN ZONE LIGHT ILLUMINATED DURING CLIMBOUT.  ACCOMPLISHED GRH ITEMS.  ZONE LIGHT EXTINGUISHED AFTER PRESSURE MASTER CAUTION.  PERFORMED BITE TEST OF BOTH PACK/ZONE TEMP CONTROLLERS REF AMM 21 61 00, NR 2 CONTROLLER DISPLAYED FLIGHT DECK TRIM VALVE FAULT RAN VERIFY NO FAULTS, RESET CONTROLLER AGAIN RAN FULL BITE TEST PER 21 61 00, NO FAULTS.

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