Compylot- you have got to be kidding!!!!!! Read you AIP/Jepp for a definition of when to add 'Heavy' to your callsign. To the best of my knowledge there are no 'Heavy' piston aircraft as it is determined solely by weight. FWIW it is not at all difficult to fly a fully loaded 206/210 around the circuit at 80 kts if required to fit the traffic pattern (this is called Airmanship!).