# SDR ASAA2011121410810

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 14, 2011
- Submitted: December 21, 2011
- Operation: Air carrier
- Aircraft: [N564AS](https://openairdocs.org/aircraft/N564AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35103
- Aircraft time: 19,739 hours, 6,220 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: 3989083
- Part serial: 8724
- Condition: Failed
- Location: Cabin Temp
- Part time: 19,599 hours, 5,890 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/ASAA2011121410810

## Discrepancy

ZONE TEMP DURING RECALL "CONT CAB".   ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE REF MM 21-62-00-810-801.  RT CONTROLLER LOGS FLT DECK TRIM VALVE ON ALL PREVIOUS FLIGHTS.  REPLACED THE FLT DECK ZONE TRIM VALVE PER AMM 21-61-21-000-801.  BITE CHECK GOOD.  LEAK CHECKED GOOD.  OPS CHECKED GOOD.

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