They are too slow to hit airborne fixed wing aircraft, and even if they were fast enough, they’d likely need onboard IR / Radar tracking and guidance systems to hit something moving fast.
At which point you would not have a drone any more, it would just be an AA missile.
Drones can hit parked aircraft though.
And there is at least now one usage of a Ukranian drone that sufficiently damaged a low flying, loitering, Russian Mi 28 such that it either crashed or was forced to do an emergency landing.
They are too slow to hit airborne fixed wing aircraft, and even if they were fast enough, they’d likely need onboard IR / Radar tracking and guidance systems to hit something moving fast.
At which point you would not have a drone any more, it would just be an AA missile.
Drones can hit parked aircraft though.
And there is at least now one usage of a Ukranian drone that sufficiently damaged a low flying, loitering, Russian Mi 28 such that it either crashed or was forced to do an emergency landing.
https://theaviationist.com/2024/08/08/fpv-drone-vs-mi-28/