Originally Posted by
meleagertoo
Perhaps the m/r is better able to handle a bit of assymetric weight than the much more delicate t/r, requiring that to be deiced all at once rather than in sections?
I'd suposed that probable reason is that TR is more prone to efficiency loss just because it has smaller chord and therefore same ice thickness ruins its aerodynamics faster than it does for bigger MR chord. Just inspired by a comparison between any MR chord and fixed wing chord.