I've long thought an experimental category A/C dedicated only to towing
would be a good alternative to the Pawnee. The correct design would
get better fuel efficiency, be quieter, have longer TBO and probably be
liquid cooled so thermal shock is not such a problem on let down. Two
questions, though: who wants to design a specialized airplane with such
limited market potential, and what would the insurance companies say
about towing with an A/C in the experimental category? Otherwise,
bring it on! Fred