# SDR ASAA2012092692958

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2012
- Submitted: September 28, 2012
- Operation: Air carrier
- Aircraft: [N570AS](https://openairdocs.org/aircraft/N570AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35185
- Aircraft time: 21,746 hours, 6,531 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Condition: Malfunctioned
- Location: Lt A/C Pack
- Stage of operation: TX
- 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/ASAA2012092692958

## Discrepancy

LT PACK LIGHT ON RECALL AFTER ENGINE START.  ACFT GROUNDED. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE PROCEDURE.  FOUND TCV ON CONTROLLER NR 1 AT FAULT.  FAULT CLEARED ON RESET.  SYS OPS NORMAL .

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