# SDR ASAA2023011741540

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 2023
- Submitted: January 17, 2023
- Operation: Air carrier
- Aircraft: [N583AS](https://openairdocs.org/aircraft/N583AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35681
- Aircraft time: 54,010 hours, 15,779 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Modulating Valve
- Part number: 3989083
- Part serial: 2215
- Condition: Faulted
- Location: Right Ecs Bay
- Part time: 19,394 hours, 5,554 cycles
- Stage of operation: NR
- 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/ASAA2023011741540

## Discrepancy

R PACK LIGHT - RESETS. GROUNDED - YES. FOUND FAULT THIS PACK TCV (V141). REMOVED AND REPLACED RIGHT TCV IAW B737-800 AMM 21-51-10.

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