# SDR ASAA2015110813688

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 8, 2015
- Submitted: November 10, 2015
- Operation: Air carrier
- Aircraft: [N506AS](https://openairdocs.org/aircraft/N506AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35690
- Aircraft time: 28,521 hours, 8,778 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Condition: Faulted
- Location: Lt A/C Pack
- 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/ASAA2015110813688

## Discrepancy

LEFT PRIMARY PACK INOPERATIVE.  ACFT GROUNDED.  ACCOMPLISHED NR 1 & NR 2 TEMP CONTROLLERS BITE TEST IAW TASK 21-61-00-700-806-002.  FOUND TCV FAULT ON NR 1 CONTROLLER  RESET AND BITE WAS GOOD.  RAN PACKS FOR 20 MINUTES, NO FAULTS.

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