# SDR ASAA2012072292600

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 2012
- Submitted: July 26, 2012
- Operation: Air carrier
- Aircraft: [N569AS](https://openairdocs.org/aircraft/N569AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35184
- Aircraft time: 20,470 hours, 6,607 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: Control Valve
- 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/ASAA2012072292600

## Discrepancy

WHEN MASTER CAUTION WAS SELECTED, LT PACK LIGHT ILLUMINATED AND RESET WHEN MASTER CAUTION WAS PUSHED.   PERFORMED A PACK/ZONE TEMPERATURE CONTROLLER BITE TEST IAW AMM 21-51-00-700-801.  SOFT FAULT FOR TCV ILLUMINATED. UPON VERIFY SECTION OF TEST FAULT LIGHT WENT OUT AND COULD NOT REPEAT FAULT.

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