# SDR ASAA2019031728630

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2019
- Submitted: March 19, 2019
- Operation: Air carrier
- Aircraft: [N585AS](https://openairdocs.org/aircraft/N585AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35683
- Aircraft time: 44,179 hours, 13,227 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning System
- Condition: False Indication
- Location: Cockpit
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019031728630

## Discrepancy

BOTH PACK CONTROL LIGHTS ILLUMINATE ON RECALL AND CLEAR ON RESET. GROUNDED - YES. C/W AMM 21-61-00, PACK/ZONE TEMP CONTROLLER BITE TEST IS GOOD, THIS CLEARS MEL 21-32B, NO FURTHER DEFECTS NOTED. HISTORY SHOWS "RAM AIR SENSOR" FAULT PREVIOUS FLIGHT.

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