# SDR ASAA2020092133220

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2020
- Submitted: October 6, 2020
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 50,980 hours, 15,128 cycles
- 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: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020092133220

## Discrepancy

L PACK LIGHT ILLUMINATES ON RECALL.  GROUNDED-YES.  PERFORMED L-PACK PACK LIGHT IS ON DURING MASTER CAUTION RECALL-FAULT ISOLATION AND FOUND NO DEFECTS IAW B737-800 FIM TASK 21-53 TASK 821 AND TASK 21-62 TASK 801.

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