# SDR ASAA2019052429471

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 2019
- Submitted: May 28, 2019
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 44,490 hours, 13,492 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning System
- Condition: False Activation
- 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/ASAA2019052429471

## Discrepancy

LEFT PACK LIGHT ILLUMINATES WITH MASTER RECALL CHECK PACK LIGHT EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE LEFT PACK TCV FAULT LOGGED .VERIFY & RESET OK WITH NO FURTHER DISCREPENCIES .NO HISTORY LAST 30 DAYS REF 21-61-00.

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