There is a manufacturing defect in the rudder control system. The Federal Aviation Administration ... the problem is with the ...

Instead of just replacing it with a newer commercial model, he built a complete controller system with a long joystick that pivots at floor level, integrated rudder pedals and a throttle box.

No obvious malfunction in the rudder system was initially found, the NTSB report said, but testing during the investigation later found that in cold temperatures a component required torque ...