# SDR ASAA201805164638

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2018
- Submitted: May 16, 2018
- Operation: Air carrier
- Aircraft: [N442AS](https://openairdocs.org/aircraft/N442AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43293
- Aircraft time: 17,835 hours, 5,929 cycles
- Engine: Ge CF3410E5
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: Lt A/C Pack
- 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/ASAA201805164638

## Discrepancy

DURING MASTER CAUTION RECALL, LEFT PACK LIGHT ILLUMINATED. RESET WITH MASTER CAUTION RESET. ACFT GROUNDED.  THE TCV FAULT NR 1 ZONE TEMP CONTROLLER. RESET & TESTED NORMAL IAW FIM 21-62 TASK 830.

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