# SDR ASAA2020110133460

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 1, 2020
- Submitted: November 3, 2020
- Operation: Air carrier
- Aircraft: [N535AS](https://openairdocs.org/aircraft/N535AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35200
- Aircraft time: 36,196 hours, 10,446 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989083
- Part serial: 14988
- Condition: Faulted
- Location: Lt A/C Pack Temp
- Part time: 36,196 hours, 10,446 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020110133460

## Discrepancy

PERFORMED BIT CHECK LT PACK, TCV FAULTED.  GROUNDED-YES.  REPLACED PACK TCV, PER B737-800 AMM 21-61-21-000-801.  GREEN GO LIGHT ILLUMINATED.

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