I'm scoffing because in the video he says the aircraft is in hover when it's clearly sitting on the ground.
I have never heard a quiet propeller.
Part 135 allows then to operate as an air carrier but their aircraft still need a type certificate and they don't even have a complete aircraft yet.
I have never heard a quiet propeller.
Part 135 allows then to operate as an air carrier but their aircraft still need a type certificate and they don't even have a complete aircraft yet.