# SDR ASAA2020012723939

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 2020
- Submitted: February 4, 2020
- Operation: Air carrier
- Aircraft: [N530AS](https://openairdocs.org/aircraft/N530AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36578
- Aircraft time: 38,191 hours, 11,226 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 5416744
- Part serial: 8681
- Condition: Faulted
- Location: Ram Air Exhaust
- Part time: 59,864 hours, 26,298 cycles
- Stage of operation: NR
- 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/ASAA2020012723939

## Discrepancy

LH PACK LIGHT ILLUMINATED & RESETS WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED PACK /ZONE TEMP CONTROLLER BITE REF B737-800 AMM 21-61-00-700-806-002. FOUND LH RAM AIR ACT FAULT. REMOVED AND REPLACED LH RAM AIR INLET ACTUATOR REF B737-800 AMM 21-51-21/401 OPC PASSED. ETOPS GROUND VERIFICATION SUCCESSFUL.

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