# SDR ASAA2021112636708

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 26, 2021
- Submitted: November 30, 2021
- Operation: Air carrier
- Aircraft: [N413AS](https://openairdocs.org/aircraft/N413AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35205
- Aircraft time: 32,632 hours, 10,408 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021112636708

## Discrepancy

L PACK LIGHT ILLUMINATED -BOTH CHANNELS FAILED. GROUNDED - YES. FOUND LEFT PACK LIGHT ON RECALL GOES OUT ON RESET, SINGLE CHANNEL FAULT. #1 CONTROLLER LOGGED "THIS PACK TCV" FAULT. PERFORMED B737-900 FIM 21-53 TASK 821 BITE IS GOOD, FAULT CLEARED, NO CURRENT FAULTS. RAN LEFT PACK TEMP CONTROL NORMAL. GRD VERIFICATION SUCCESSFUL.

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