# SDR ASAA2018100826384

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 4, 2018
- Submitted: October 9, 2018
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 19,740 hours, 6,503 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: DE
- 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/ASAA2018100826384

## Discrepancy

DURING DESCENT CHECKLIST WHEN MASTER CAUTION RECALL WE GOT AN AIR COND LIGHT AND A LEFT PACK LIGHT. CHECKLIST FOLLOWED AND BOTH LIGHTS EXTINGUISHED WHEN MASTER CAUTION WAS RESET. GROUNDED - YES. NR 1 CONTROL FAULTED NR 1 INLET RAM AIR ACTUATOR. ACCOMPLISHED BITE CHECK AMM 21-61-00. BITE TEST PASSED, FAULT RESET.

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