# SDR ASAA11510225

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2011
- Submitted: August 15, 2011
- Operation: Air carrier
- Aircraft: [N566AS](https://openairdocs.org/aircraft/N566AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 17,552 hours, 5,494 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989083
- Part serial: 5862
- Condition: Malfunctioned
- Location: Ac Bay
- Part time: 4,948 hours, 1,581 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA11510225

## Discrepancy

RIGHT PACK LIGHT ILLUMINATES WITH MASTER RECALL AND EXTINGUISHES WITH MASTER RESET.  PERFORMED NR 2 AIR CONDITIONING PACK/ZONE TEMP.  CONTROLLER BITE CHECK/TEST.  FOUND NR 2 TCV FAULT LIGHT TO ILLUMINATE TO VERIFY RT PTCV FAULT.  REPLACED RT TEMP CONTROL VALVE PER MM 21 51 10 PB 401.  OPS CHECK GOOD.  NO FAULTS NOTED.

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