Do airplanes have keys?

Small planes tend to have keys, but not all. The bigger the plane the less likely a key is needed and once you get into jets, I can't think of any that need keys for engine starts. The starting and securing of engines with no keys comes down to switches and knobs. read more

Small personal airplanes usually have ignition keys. Larger business or airline ones do not. Most have keys to lock the doors, but the locks are typically not very substantial ones. Any competent lock smith can open a locked airplane door in a few minutes, if not a few seconds. read more

Small planes (like the little Cessna in How Airplanes Work) have locks on the doors and ignition keys inside to start the engine. They are pretty much like a car in this respect. The reason why they need locks and keys is because they sit out in relatively unsecure parking areas, sometimes for weeks at a time. read more