# SDR ASAA2019022828422

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 28, 2019
- Submitted: March 8, 2019
- Operation: Air carrier
- Aircraft: [N419AS](https://openairdocs.org/aircraft/N419AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41734
- Aircraft time: 23,576 hours, 7,725 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Actuator
- Part number: 5416744
- Part serial: 16698
- Condition: Faulty
- Location: Ram Air Inlet
- Part time: 23,623 hours, 7,739 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/ASAA2019022828422

## Discrepancy

LT PACK LIGHT ON /ON RECALL. GROUNDED - YES. REMOVED AND REPLACED LEFT PACK RAM AIR INLET ACTUATOR. OP'S CK GOOD REF AMM 21-51-21-000-801 AND 21-51-21-400-801. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE TEST ON NR 1 AND NR 2 CONTROLLERS OP'S CK GOOD NO FAULTS NOTED ON BOTH BITE TEST REF AMM 21-61-00-700-806-002. THIS CLEARS MEL 21-5C.

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