# SDR ASAA2019080183254

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2019
- Submitted: August 6, 2019
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 47,742 hours, 14,175 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 5416744
- Part serial: 14624
- Condition: Faulted
- Location: Ram Air
- Part time: 27,213 hours, 8,093 cycles
- Stage of operation: TX
- 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/ASAA2019080183254

## Discrepancy

RAM AIR FULL OPEN LIGHT NOT ILLUMINATED (RIGHT) ON PREFLIGHT. GROUNDED - YES. CONFIRMED FAULT, R/H PACK-ZONE TEMP CONTROLLER BITE SHOWS R/H RAM AIR ACTUATOR FAULT. REMOVED & REPLACED R/H RAM AIR ACTUATOR REF B737-800 AMM 21-51-21. ACCOMPLISHED R/H PACK/ZONE TEMP CONTROLLER BITE REF AMM 21-61-00-700-806-002, OPS CK NML. NO FAULTS ON L/H PACK/ZONE TEMP CONTROLLER.

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