Dear all,
I really need to resolve this issue or the constellation could be unflyable which is a shame for sure......
OK, at cruise level usually 12,000ft using the KFC 225, the plane is shaking in a regular way also reacting to clouds normally, then suddenly without any known reason, it goes into a dive for 3,000 to 5,000 then stabilize briefly to start climbing until reaching cruise level again......Again in 5-10 minutes, it happens again using maximum decent and climb rates ......At a 250nm trip, it could happen 3-5 times ......Also at approach phase, it occurs, however, I disconnect the autopilot not to crash when I do the plane responds normally.
I fly other planes like DC-6B, JS41, and DC-3 at similar conditions and nothing like that ever happens.
I have no clue is it the constellation issue or AS variables or something else?
Any help would be highly appreciated, please
Alaa Riad