# SDR ASAA2013033094287

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2013
- Submitted: April 1, 2013
- Operation: Air carrier
- Aircraft: [N536AS](https://openairdocs.org/aircraft/N536AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35203
- Aircraft time: 4,797 hours, 1,376 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Filter
- Part number: 412A160041
- Condition: Malfunctioned
- Location: Temp Sensor
- 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/ASAA2013033094287

## Discrepancy

CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED DURING RECALL.  EXTINGUISHES WHEN RESET IS PUSHED.  PERFORMED BITE TEST ON BOTH ZONE TEMP CONTROLLERS.  NR 2 ZONE TEMP CONTROLLER SHOWED FAULT FOR FLIGHT DECK TRIM VALVE.  REPLACED CABIN TEMP SENSOR FILTER IAW AMM 21-61-06.  OPERATED CABIN ZONE TEMP CONTROL SYS NO FAULT.  NO HISTORY 60 DAYS.

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