# SDR ASAA0954496

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 24, 2009
- Submitted: February 26, 2009
- Operation: Air carrier
- Aircraft: [N558AS](https://openairdocs.org/aircraft/N558AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35177
- Aircraft time: 10,362 hours, 2,960 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cabin Temp
- Stage of operation: TX
- 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/ASAA0954496

## Discrepancy

CONT CABIN ZONE TEMP LIGHT ON RECALL.  NR 2 TEMP CONTROLLER LOGGED "FLIGHT DECK TRIM VALVE" LAST LEG WITH NO PRIOR HISTORY.  CLEARED FAULT REF MM 21 61 00, CABIN TEMP CONTROL OPS NORMAL.

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