> Basically every commercial aircraft are required to at least be able to fly straight and level on one engine. Very nitpicky but I have to say it: The requir

> Basically every commercial aircraft are required to at least be able to fly straight and level on one engine. Very nitpicky but I have to say it: The requirement is „one engine out“, not „one engine available“. This makes a significant difference when looking at planes with more than 2 engines, like a 747 or an A380. Those have to be flyable with 3 engines remaining (which gives them an advantage because 2 engine planes have to calculate takeoff with 1/2 engine performance while 4 engine planes can assume 3/4 engine performance).