# SDR ASAA2018021723584

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2018
- Submitted: February 21, 2018
- Operation: Air carrier
- Aircraft: [N564AS](https://openairdocs.org/aircraft/N564AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35103
- Aircraft time: 43,520 hours, 13,133 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989085
- Part serial: 22238
- Condition: Faulted
- Location: Rt A/C Pack
- Part time: 12,911 hours, 4,263 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/ASAA2018021723584

## Discrepancy

ON RECALL,  NR 2 PACK LIGHT ILLUMINATED ON MASTER CAUTION,  PUSHED TO RESET,  LIGHT EXTIGUISHED. GROUNDED - YES. RELEASED PER MEL 21-32B RT HAND PACK PRIMARY TEMP CONTROL IS INOP. PERFORMED B737-800 FIM 21-62 TASK 801 FOUND RIGHT PACK TCV ILLUMINATED. REMOVED AND REPLACED RIGHT PACK TCV IAW AMM 21-51-10. OPS CHECK GOOD.

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