Below is concept art of Scourge as an airship, from the comic Hearts of Steel. It looks pretty badass. In theory, any decent vehicle can be a good alternate mode. But realistically speaking, airship design must consider how much air they need, how much weight they can carry, and how maneuvrable they are. It'd probably need to be really big, can't carry enough metal so it'd be really light, and may have serious issues with mobility so with combat it can't work out. This link explains how realistic airships need to be: Physics ruins all our Fun: Luxury airship edition It may only be worth as a mobile base, and for any poor robot who takes on that alt mode it's as good as sitting in the air with a target on your back. So I guess not. It's a pity because there are some fantastic airship designs.