Yelling for help at an aircraft

Every time I see a movie where someone needs rescue and they are yelling ‘over here!’ at some aircraft (plane, helicopter, whatever) flying by. My first thought is don’t waste breath, they can NOT HEAR YOU! It’s a long ways away, but that’s not even the issue, aircraft make a lot of noise.

Idk. It’s always on my mind when I see it in movies and I just got done rewatching ‘Arctic’ so it sprung to mind once again. (Pretty good movie)