‘On The Plane’ Is Wrong
Here is an interesting question – how often have you said, “I am on the plane…”?
And on a second note, have you ever thought, how ridiculous and stupid that sounds?
It is literally impossible to sit on a plane, unless someone ties you there with a rope, or you are trying to have too much fun.
What you actually want to say is, “I am in a plane” or “I am sitting in a plane” Sitting in a plane is fine. Sitting ‘on’ the plane is wrong.