# SDR ASAA2017100622127

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2017
- Submitted: October 9, 2017
- Operation: Air carrier
- Aircraft: [N537AS](https://openairdocs.org/aircraft/N537AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35204
- Aircraft time: 22,531 hours, 6,559 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Condition: Malfunctioned
- Location: Ram Air
- Stage of operation: DE
- 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/ASAA2017100622127

## Discrepancy

ON INITIAL DESCENT, LEFT PACK LIGHT ILLUMINATED.  IAW QRH PUSHED MASTER CAUTION RESET AND PACK LIGHT EXTINGUISHED.  ACFT GROUNDED.   LEFT PACK/TEMP CONTROLLER LOGGED THE RAM AIR ACTUATOR ON LAST FLIGHT.  FAULT RESET, BITE CHECK OF THE LT TEMP CONTROLLLER WAS NORMAL IAW FIM 21-62, TASK 801.  RAN THE LT PACK, PACK LIGHT STAYED OFF.

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