# SDR ASAA2019031728625

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2019
- Submitted: March 19, 2019
- Operation: Air carrier
- Aircraft: [N423AS](https://openairdocs.org/aircraft/N423AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35206
- Aircraft time: 23,285 hours, 7,648 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 5416744
- Part serial: 16406
- Condition: Failed
- Location: Ram Air Inlet
- Part time: 24,363 hours, 7,966 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019031728625

## Discrepancy

AT TOD WHEN CHECKING RECALL LEFT PACK LIGHT ILLUMINATED. HOWEVER RESET WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED LEFT RAM AIR DOOR ACTUATOR W/NEW REF AMM 21-51-21-000-801 & AMM 21-51-21-400-801. BONDING CHECK IS GOOD REF AMM 21-51-21.  RAM AIR INLET ACTUATOR TEST OK.

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