# SDR ASAA2023040342748

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 3, 2023
- Submitted: April 7, 2023
- Operation: Air carrier
- Aircraft: [N579AS](https://openairdocs.org/aircraft/N579AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35187
- Aircraft time: 57,912 hours, 17,030 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 5416744
- Part serial: 16164
- Condition: Faulted
- Location: Ram Air Inlet
- Stage of operation: CR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023040342748

## Discrepancy

LEFT PACK LIGHT ILLUMINATED ONCE CRUISE ALTITUDE OF 330 REACHED. QRH COMPLIED WITH. LIGHT EXTINGUISHED HOWEVER PACK LIGHT ILLUMINATED AGAIN AFTER A FEW MINUTES. GROUNDED - YES. REPLACED LH PACK RAM AIR DOOR ACTUATOR WITH NEW REF B737-800 AMM 21-51-21.

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