# SDR ASAA0752277

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2007
- Submitted: November 21, 2007
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 2,791 hours, 858 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Filter
- Part number: 412A160041
- Condition: Dirty
- Location: Cabin Air
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0752277

## Discrepancy

AFT TEMP CONTROLLER EXTREMELY SENSITIVE TO SMALL ADJUSTMENTS.  BITE TEST BOTH ZONE TEMP CONTROLLERS.  ALL GOOD NO FAULTS NOTED.  FOUND AIR FILTERS DIRTY AT FLIGHT COMPT FWD & AFT COMPARTMENTS.  CLEANED AIR FILTERS.  OP CHECKS GOOD.

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