FPG, my comments come as a past owner of an Arrow I and a few hundred hours CPL instruction on an Arrow IV. In no particular order:
A pain for engineers and routine maintenance.
Less responsive in pitch.
Faster approach speeds = longer landing distance.
A 'feeling' that the aircraft really doesn't want to fly when taking-off.
Basically, I don't think the T tail made any improvement and, casting everything else aside, brings a heavier engineering bill.
Last edited by Cows getting bigger; 13th May 2012 at 17:11.