# SDR ASAA2022092840098

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2022
- Submitted: September 30, 2022
- Operation: Air carrier
- Aircraft: [N464AS](https://openairdocs.org/aircraft/N464AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 40714
- Aircraft time: 31,833 hours, 9,878 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Part number: UNKNOWN
- Condition: Faulty
- 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/ASAA2022092840098

## Discrepancy

LEFT PACK ILLUMINATED ON MASTER CAUTION RECALL. PACK EXTINGUISHED ON MASTER CAUTION RESET. GROUNDED - YES. REF B737-900 FIM 21-53 TASK 821, LEFT PZTC BITE PREV FLT LOGGED "THIS PACK TCV" FAULT. FAULT RESETTABLE, PZTC BITE VERIFY GOOD W/O FAULTS. VERIFIED LEFT PACK OPS CHECKED NORMAL ON GND W/O FAULT LIGHTS.

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