# SDR ASAA202002132169

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2020
- Submitted: February 14, 2020
- Operation: Air carrier
- Aircraft: [N486AS](https://openairdocs.org/aircraft/N486AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44107
- Aircraft time: 17,632 hours, 5,662 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989083
- Part serial: 10676
- Condition: Failed
- Location: Rt A/C Pack Temp
- Part time: 43,533 hours, 13,198 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA202002132169

## Discrepancy

RIGHT PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL. GROUNDED - YES. ACCOMPLISHED BITE CK & R/H PACK TCV FAULTS, REMOVED & REPLACED R/H TCV REF B737-900 AMM 21-51-10 OPS & LK CK GOOD.

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