# SDR ASAA12510976

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 2012
- Submitted: January 23, 2012
- Operation: Air carrier
- Aircraft: [N589AS](https://openairdocs.org/aircraft/N589AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35686
- Aircraft time: 15,607 hours, 5,025 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA12510976

## Discrepancy

LEFT PACK LIGHT ILLUMINATED ON RECALL LIGHT EXTINGUISHED ON MASTER CAUTION RESET.  PERFORMED PACK ZONE TEMP CONTROLER BITE FOR NR 1 ZONE CONTROLLER FAULTS PACK TCV.  RESET FAULT LIGHT RAN PACK NO FURTHER DEFECTS.  PERFORMED PACK/ZONE TEMPERATURE CONTROLLER INSTALLATION TEST PER 21 61 20 400 801 TEST PASSED.

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