# SDR ASAA2021071335360

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 2021
- Submitted: July 14, 2021
- Operation: Air carrier
- Aircraft: [N407AS](https://openairdocs.org/aircraft/N407AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41731
- Aircraft time: 32,769 hours, 10,327 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 5416744
- Part serial: 777097
- Condition: Malfunctioned
- Location: Ram Air Inlet
- Part time: 22,762 hours, 6,939 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021071335360

## Discrepancy

L/H PACK RAM AIR ACTUATOR CONTINOUSLY RUNNING. GROUNDED - YES. REPLACED L/H RAM AIR ACTUATOR. OPS CHECK OK. REF B737-900 AMM 21-51-21-400-801.

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