What was found
PNEUMATIC ISOLATION VALVE OPENS AND CLOSES DURING FLIGHT WITH NO INPUT FROM CREW.
- Difficulty date
- July 15, 2006
- Submitted
- July 17, 2006
- Operation
- Air carrier
- Aircraft
- N498QS
- Make and model
- Gulstm GIV
- Aircraft serial
- 1398
- System (JASC)
- 3600 · Pneumatic System
- Part
- Isolation Valve
- Part number
- 39819631
- Part serial
- 610
- Condition
- Malfunctioned
- Location
- Pneumatic Sys
- Part time
- 5,881 hours, 2,918 cycles
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.