What would you check when the helicopter shakes during flying?

A.Are the main blades out of track?
a.Are the paddles out of track?
c.Are the main blades well balanced?
d.Are the paddles well mounted at the same distance from the
rotor shaft?
e.Is the spindle or the flybar bent?
f.Is the main shaft bent?
g.Is the main rotor hub damaged?
h.Is the motor well installed and is the shaft of the motor bent?
i.Is the tail rotor shaft bent?
j.Is the tail rotor hub damaged?
k.Do all the ball bearings work well?

Posted in: General Question