# SDR 2011F00039

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2011
- Submitted: February 14, 2011
- Operation: Air carrier
- Aircraft: N17DD
- Make and model: Raythn HAWKER800XP
- Aircraft serial: 258161
- Aircraft time: 7,823 hours, 5,375 cycles
- Engine: Garrtt TFE731*
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Valve
- Part number: B01A214128A
- Part serial: 1056
- Condition: Defective
- Location: Cabin Air
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2011F00039

## Discrepancy

THE FLIGHT CREW REPORTED AFTER TAKEOFF, THAT THE "MAIN AIR VLV 1" LIGHT ILLUMINATED.  AFTER RUNNING THE CHECKLIST IT WAS DETERMINED THAT THE NR 1 MAV DID NOT FULLY OPEN AND WOULD NOT CLOSE AND THE NR 1 MAV CB WAS FOUND TRIPPED.  TROUBLESHOOTING FOUND THE NR 1 MAV TO BE DEFECTIVE AND WAS REPLACED WITH O/H UNIT.

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