# SDR ASAA0955292

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2009
- Submitted: April 27, 2009
- Operation: Air carrier
- Aircraft: [N585AS](https://openairdocs.org/aircraft/N585AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35683
- Aircraft time: 6,399 hours, 1,869 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: 3989083
- Part serial: 9835
- Condition: Faulted
- Location: Cabin Temp
- Part time: 6,399 hours, 1,869 cycles
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0955292

## Discrepancy

ON MASTER CAUTION RECALL CONT CAB ZONE TEMP LIGHT ILLUMINATES/LIGHT GOES AWAY WHEN MASTER CAUTION IS RESET, GROUNDED YES.  PERFORMED BITE TEST OF PACK/ZONE TEMP CONTROLLERS.  FOUND FLT DECK TRIM AIR VALVE FAULT LIGHT ON.  VERIFIED P/N 398908-3 WITH SEAM MARK.  REMOVED AND REPLACED FLT DECK TRIM AIR VALVE IAW AMM 21-61-21.  LEAK CHECK GOOD.  PERFORMED BITE TEST OF PACK/ZONE TEMP CONTROLLERS, NO FAULTS FOUND.

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