RC in an old movie

[Ed Burkot]

And now for something completely different....

In the mid '70s, I came across a movie on TV and the scene involved a teenage boy flying an RC model airplane.  I believe he was using a push-button, reed type system, so the movie was even older.  The airplane was spotted by neighborhood bullies who proceeded to wreck the airplane after it landed.

This is all I can remember.  Anybody recognize this movie?  I'm looking for the title.

Ed