# SDR ASAA12511664

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2012
- Submitted: June 19, 2012
- Operation: Air carrier
- Aircraft: [N566AS](https://openairdocs.org/aircraft/N566AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 20,775 hours, 6,422 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Valve
- Part number: 3989083
- Part serial: 1659
- Condition: Faulted
- Location: Lt A/C Pack
- Part time: 63,600 hours, 32,658 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/ASAA12511664

## Discrepancy

LEFT A/C PACK LIGHT ILLUMINATED ON RECALL.  EXTINGUISHED AFTER PRESSING RESET. NR 1 CONTROLLER SHOWS TEMP CONTROL VALVE FAULT.  REPLACED TEMP CONTROL VALVE AND CONTROL CABIN TRIM MODULATING VALVE REF 21-61-21-400-801. OPS & LEAK CHECKED GOOD.

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