# SDR ASAA2013120796655

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2013
- Submitted: December 9, 2013
- Operation: Air carrier
- Aircraft: [N413AS](https://openairdocs.org/aircraft/N413AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35205
- Aircraft time: 2,919 hours, 921 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Sensor
- Condition: Dirty
- Location: Cockpit Temp
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013120796655

## Discrepancy

LEFT PACK LIGHT ILLUMINATED ON RECALL.  LIGHT EXTINGUISHED WITH MASTER CAUTION RESET.  ACFT GROUNDED.  BITE CHECK OF NR 1 AND 2 ZONE TEMP CONTROLLERS  SHOWS NO FAULTS.  CLEANED COCKPIT TEMP SENSOR.  RAN BITE ON BOTH ZONE TEMP CONTROLLERS.  ALL OPS NORMAL.  NO HISTORY 90 DAYS. REF MM 21-61-00.

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