In order to find problems with a car, you drive it until it starts making a weird noise or won't start, and then you pull over, call AAA, and send it to the mec

In order to find problems with a car, you drive it until it starts making a weird noise or won't start, and then you pull over, call AAA, and send it to the mechanic. There's no "pre-drive" inspection required like there is with all flying vehicles (it's not even safe to fly a low-complexity hang glider without a detailed pre-flight). The upkeep I'm talking about comes with constant and rigorous inspections of all of your single parts, and the consequences that come with failure. If one of your lift-generating blades has microcracks in it because it's been vibrating after an improperly set nut got a little loose, you could experience fan failure during flight and crash.