# SDR ASAA2018021623583

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2018
- Submitted: February 21, 2018
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 17,122 hours, 5,647 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 676000141
- Part serial: 67600014765
- Condition: Malfunctioned
- Location: Lt Ram Air
- Part time: 17,138 hours, 5,653 cycles
- Stage of operation: CR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018021623583

## Discrepancy

DURING M/C RECALL DURING CRUISE,  FL 280, THE LEFT PACK LIGHT ILLUMINATED.  RESET TO OFF WITH M/C RESET,  LIGHT PRESSED.  ACFT GROUNDED. IAW TSR701458, REPLACED BOTH LT RAM AIR INLET DOOR ACTUATOR,  AND LT RAM AIR EXHAUST DOOR ACTUATOR, AND ACCOMPLISHED A PACK/ZONE TEMP CONTROLLER BITE TEST, OPS NORMAL IAW AMM 21-61-00-740-801-002.

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