# SDR ASAA1159160

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 1, 2011
- Submitted: March 8, 2011
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 17,821 hours, 5,271 cycles
- System (JASC): [2163 · Cabin Temperature Sensor](https://openairdocs.org/jasc/2163)
- Part: Filter
- Part number: 412A160041
- Condition: Dirty
- Location: Cabin
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA1159160

## Discrepancy

UNABLE TO CONTROL TEMPERATURE OF FWD AND AFT CABIN IN AUTO MODE.  PERFORMED BITE CHECK OF BOTH TEMP CONTROLLERS REF M/M 21 61 00 NO FAULTS FOUND.  FOUND BOTH CABIN TEMP SENSOR FILTERS DIRTY REMOVED AND REPLACED BOTH CABIN TEMP SENSOR FILTERS PER M/M 21 61 06 SYSTEM OPS CHECKS NORMAL.

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