# SDR ASAA2015032311085

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2015
- Submitted: March 25, 2015
- Operation: Air carrier
- Aircraft: [N435AS](https://openairdocs.org/aircraft/N435AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43292
- Aircraft time: 5,449 hours, 1,805 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Sensor
- Condition: Dirty
- Location: Temp
- 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/ASAA2015032311085

## Discrepancy

FWD CAB TEMP CONTROL VERY ERRATIC IN AUTO, WORKS WELL IN OFF.  ACFT GROUNDED.  CLEANED FWD CABIN TEMPERATURE SENSOR REF AMM TASK 21-61-10-100-801; ACCOMPLISHED BITE CHECK OF BOTH TEMP CONTROLLERS.  NO FAULTS REF 21-61-00-700-806-002; RAN AIR CONDITIONING SYS WITH BOTH PACKS-FWD CABIN TEMP CONTROL WAS NORMAL IN AUTO AND OFF SETTINGS, REF. AMM FIM TASK 2161-864 F.4.

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