# SDR ASAA2021052834957

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 28, 2021
- Submitted: June 1, 2021
- Operation: Air carrier
- Aircraft: [N537AS](https://openairdocs.org/aircraft/N537AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35204
- Aircraft time: 35,113 hours, 10,175 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Message
- Condition: False Activation
- Location: Lt A/C Pack
- Stage of operation: TX
- 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/ASAA2021052834957

## Discrepancy

UPON COMPLETION OF AFTER START CK LIST - RECALL "PACK" LIGHT ILLUMINATED FOR L PACK. COMPLETED QRH NOT ABLE TO RESET. GROUNDED - YES. FOUND LEFT PACK LIGHT ILLUMINATING ON RECALL AND EXTINGUISHING ON RESET. #1 ZONE CONT LOGGED RAM AIR ACT FAULT. FAULT CLEARED AND OPS NML PER B737-800 AMM 21-61-00. GND VERIFICATION SUCCESSFUL.

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