# SDR ASAA2019082653467

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 25, 2019
- Submitted: August 27, 2019
- Operation: Air carrier
- Aircraft: [N562AS](https://openairdocs.org/aircraft/N562AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35091
- Aircraft time: 49,396 hours, 14,696 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989083
- Part serial: 8856
- Condition: Failed
- Location: Rt A/C Pack
- Part time: 49,407 hours, 14,699 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019082653467

## Discrepancy

ILLUMINATION OF RIGHT PACK DURING MASTER CAUTION RECALL. RIGHT PACK EXTINGUISHED WHEN MASTER CAUTION SYSTEM WAS RESET. GROUNDED - YES. PERFORMED PACK TEMPERATURE CONTROL - BITE PROCEDURE PER B737-800 FIM 21-62 TASK 801. TCV FAULT LOGGED. REMOVED AND REPLACED RIGHT PACK TCV IAW B737-800 AMM 21-51-10. OPS TEST GOOD. NO FURTHER DEFECTS NOTED.

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