# SDR ASAA2014020906806

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 9, 2014
- Submitted: February 11, 2014
- Operation: Air carrier
- Aircraft: [N516AS](https://openairdocs.org/aircraft/N516AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39044
- Aircraft time: 19,761 hours, 6,131 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: 3989084
- Part serial: 10725
- Condition: Faulted
- Location: A/C Bay
- Part time: 17,264 hours, 7,905 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014020906806

## Discrepancy

WHILE PERFORMING BITE CHECK ON NR 1 ZONE TEMP CONTROLLER,  FOUND AFT CABIN ZONE TEMP VALVE FAULTED.  ACFT GROUNDED.  REPLACED AFT CABIN ZONE TEMP VALVE, REF MM 21-61-21, OPS CHECK BITE CHECK GOOD. OK FOR SERVICE.

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