Why don't commercial aircrafts have parachutes?
Why don't planes use massive parachutes?
Why don't airplanes fly much higher than 35-38k ft? Why aeroplanes fly in sky? Why does aeroplane fly? Why do aircraft fly at the altitudes that they do? Why do some airplanes have low wings, and others have high wings? Why don't mountaineers pack a parachute on their backs, so they can base-jump out of trouble? Why do some planes still use propeller engines, not jets? Why can’t parachutes be pre-opened? Can airplanes and jet fighters fly with no atmosphere? Why can't airplanes land in the fog? Are they really eyeballing the landing? Why can't airplanes land in fog? Why are US Aircraft Carriers getting bigger if Air Wings are getting smaller? How would the size of parachute required on a space probe to allow it to land safely different on thick atmosphere and thin atmosphere? Why can’t an airplane just fly into space? How aeroplanes fly? Why don't US airlines use Tupolev aircrafts? Why did aircraft stop using variable-sweep wings, like those on an F-14? What happens if a plane tries to take off without the main wing flaps deployed? How do airplanes fly? How high can airplanes fly? If human beings had wings, how large would they actually be required to be able to support flight? What are airplanes used for besides transporting people? How do aircrafts fly? Why do propellers in airplanes rotate in opposite directions? Why are aeroplane wings not placed at their center of gravity even though they are only meant for the lift but have have elevators for pitching moments? Do plane mechanics ever have to fly to a plane because nobody nearby can service it and it can't take off without being fixed? Why do we use rocket instead of airplane? Do planes fly over mt Everest? Why can't humans fly? Why is skydiving expensive?