# SDR ASAA2015081212856

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2015
- Submitted: August 14, 2015
- Operation: Air carrier
- Aircraft: [N535AS](https://openairdocs.org/aircraft/N535AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35200
- Aircraft time: 18,107 hours, 5,322 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Message
- Condition: False Activation
- Location: Left A/C Pack
- Stage of operation: NR
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015081212856

## Discrepancy

LEFT PACK LIGHT ON WITH MASTER CAUTION.  GOES OUT WHEN MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED LT PACK/ZONE CONTROLLER BITE REF MM 21-61-00.  FOUND LT RAM AIR ACTUATOR FAULT LAST LEG.  COMPLETED VERIFY TEST, NO CURRENT FAULTS.  CLEARED FAULT REF SAME.

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