Listed as an "Aerial Marauder," Turbo Master is an Action Master Elite. That is, the normally non-transforming Action Master has been graced with a transformation, albeit an entirely unconvincing one. He turns into a rotor-plane that looks like Turbo Master kinda lying down and doing yoga. Of peculiar note, Turbo Master's design is based on Bruticus , the combined form of the Combaticons, though nothing is noted about this in his bio. Turbo Master was available in European markets in 1991.
An Online Amateur Sketchpad