Is Dual Input feature necessary during T/O & LDG?
There are plenty of tailstrikes/hardlanding due to both pilots manipulating the controls. The take-over button isnt as instinctive as it seems, especially in the last 30ft. Ideally, it could be undesirable for two inputs to algerbarically adding at such late stage.
How about, when a trainee pilot is flying, the 'dual input' logic is inhibited below 50ft for 1min, IF the Capt moves his side stick? There is no "Dual input" call-out but just a visual indication on FO side. This can be changed if the Capt/Trainer is sitting on the right.
What could be the possible disadvantage of this system? The advantage I see is, the Capt has to correct for only the visual cues that he/she perceives rather than being concious about what the FO is doing. Workload is greatly reduced, no need to change grips. Only one pilot flies the plane this way.