# SDR ASAA2019010227655

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 2, 2019
- Submitted: January 4, 2019
- Operation: Air carrier
- Aircraft: [N491AS](https://openairdocs.org/aircraft/N491AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44109
- Aircraft time: 12,619 hours, 4,222 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/ASAA2019010227655

## Discrepancy

LT PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL, GOES OUT ON RESET. GROUNDED - YES. CW PZTC BITE REF FIM 21-62 TASK 801 NO FAULTS FOUND NO FURTHER ACTION IS NECESSARY.

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