Re: T-tail aircraft
Just incase i missed on this, when reading thru'. A T-Tail design and rear mounted engine do require beefing up of the Tail structure, which ofcourse increases weight and design complications. Reference to the MD8X (alaska air if not mistaken) crashed off the west coast of the US after a THS screw jack problem, and a Movie which was circulated on the internet of an MD/DC xx during flight testing which experienced a total loss of the tail section on touch down-with a heavy landing.( i would suppose this happened before the beefing up took place.