[craftyguy]

Nothing, apparently. I wonder though if it would be large enough to be picked up by the radar used at most airports to track planes on the ground.

[jsjohnst]

All of the consumer grade drones (aka ones under $2,500) don’t show up on radar. They are too small and don’t have enough radar reflecting substances (think about a typical airframe, the motors and battery are the only really metallic parts of any size and they are still very very small compared to any aircraft).