# SDR ASAA2013031794211

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2013
- Submitted: March 22, 2013
- Operation: Air carrier
- Aircraft: [N514AS](https://openairdocs.org/aircraft/N514AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35193
- Aircraft time: 17,143 hours, 5,357 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: 3989083
- Part serial: 4798
- Condition: Malfunctioned
- Location: A/C Bay
- Part time: 33,858 hours, 15,137 cycles
- 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/ASAA2013031794211

## Discrepancy

CONT CAB ZONE TEMP LIGHT ILLUMINATES ON RECALL, RESETS WITH MASTER CAUTION.  ACFT GROUNDED.  ZONE TEMP CONTROLLER NR 2 BITE FAULTS FLT DECK TRIM VALVE ON BITE AND PREVIOUS FLIGHT.  REPLACED FLIGHT DECK TRIM VALVE (V143). BITE CHECK PASSES AND LEAK CK OK.  REF AMM 21-61-21-400-801.

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