# SDR ASAA2022091539950

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 15, 2022
- Submitted: September 16, 2022
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41730
- Aircraft time: 36,753 hours, 11,742 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989083
- Part serial: 13498
- Condition: Failed
- Location: Left Ecs Bay
- Part time: 43,530 hours, 12,934 cycles
- 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/ASAA2022091539950

## Discrepancy

LEFT PACK LIGHT ILLUMINATES ON RECALL. GOES OUT ON RESET. GROUNDED - YES. REMOVED & REPLACED TCV 1 REF B737-900 AMM 21-51-10.

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