# SDR ASAA2017070921327

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2017
- Submitted: July 11, 2017
- Operation: Air carrier
- Aircraft: [N431AS](https://openairdocs.org/aircraft/N431AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43255
- Aircraft time: 14,702 hours, 4,849 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: Rt A/C Pack
- Stage of operation: NR
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017070921327

## Discrepancy

AFTER RECALL, RECEIVED A MASTER CAUTION FOR THE RT PACK, EXTINGUISHED ON RESET.  ACFT GROUNDED.  PERFORMED FIM 21-53 ,TASK 804, RIGHT PACK LIGHT ON DURING GROUND OPS & STAYS OFF AFTER RESET. CHECKED GOOD. OPS NORMAL. NO HISTORY IN 30 DAYS.

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