"The plane cannot take off."

Translation: 飞机不可以起飞。

[Brooks730166]

飞机不能起飞 should also be accepted.

[uncannyrain]

Agree, I wrote that too. No difference in meaning here.

[baznur]

不可以 Actually means "not allowed". If it was supposed to mean "can't" then should be 不能

[GanXingba]

It depends on why the plane couldnt take off. If something was wrong with it and it could not fly, use 不能，but if say permission by air traffic control was not granted for the plane to take off, then its not allowed so use 不可以. But this sentence gave no context.

[stupedfatidiot]

Then whats the point of this plane?