Hak,
I built an embassy building in Antananarivo (Tana) a couple of years ago, and no, I never saw any. In the coastal town and airport of Tamataf I also did not see any. The country side is extremely rugged and almost comparable to a Valley of 1000 hills x 1000 !

The interior is not a place where you want to loose an engine. Yet, small twins like the ATR's and Fokkers are travelled there like Toyota Quantums are in Jhb.
Maybe in the more (and moerse expensive) tourist frequented Nossi Be you might find a microlight operator.
BTW, are you going for work or holiday ?
That country grew under my skin I must say !
