# SDR ASAA2023042342958

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2023
- Submitted: April 24, 2023
- Operation: Air carrier
- Aircraft: [N593AS](https://openairdocs.org/aircraft/N593AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35107
- Aircraft time: 55,110 hours, 16,447 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 5416744
- Part serial: 11778
- Condition: Faulty
- Location: L Ram Air Inlet
- Part time: 58,703 hours, 17,347 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023042342958

## Discrepancy

DURING REPLACEMENT OF RIGHT PACK RAM AIR ACTUATOR ON DEFECT 60478284, FOUND RAM AIR ACTUATOR FAULT ON LEFT PACK/ZONE TEMPERATURE CONTROLLER. VERIFY TEST CONFIRMED LEFT PACK RAM AIR ACTUATOR FAULT. GROUNDED - YES. REMOVED AND REPLACED LH RAM AIR INLET ACTUATOR REF B737-800 AMM 21-51-21. OPS CHECK GOOD.

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