Which aircraft types are supported for Starlink Aviation?
Supplemental type certificate (STCs) are in development for the following aircraft: ERJ-135, ERJ-145, G650, G550, Falcon 2000, G450, Challenger 300, Challenger 350, Global Express, Global 5000, Global 6000, and Global 7500. The Starlink engineering team will update this list as development begins on additional aircraft.
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Presumably if you have something with a large flat upper surface that flies at fairly low speeds it would not be impossible to install physically, though possibly without a STC to make it legal/legit for the FAA...
You are unlikely to get one of these officially working on a hondajet or any of the small to mid size Cessna for instance.
Something in the size range of a twin otter could almost certainly mount one without serious problems, though might only be okay legally in a non faa jurisdiction.