Originally Posted by
vilas
Hi everybody
Why is it necessary to know that trim wheel is moving as long as you have the ECAM which will tell you if it is not moving?
Long ago, in a land faraway, there was only manual trim and later, electric trim.
Electric trim being a motor that moved the manual trim. The electric trim was controlled by a switch on the control wheel. If that switch malfunctioned, you could have a trim runaway. Since the trim wheel was out of the pilots normal view, he might not notice it until too late.
So, a clicker was added.
