Other mistake: Throughout the film, the Hickams' phone buzzes. When Elsie throws the phone into the yard, it breaks to reveal a pair of bells.
October Sky (1999)
1 other mistake - chronological order
Directed by: Joe Johnston
Starring: Jake Gyllenhaal, Laura Dern, Chris Cooper, Chris Owen
Continuity mistake: When Homer has just been given the gold medal at the National Science Fair, and he turns around to try to spot Werner Von Braun, several of the people in the crowd jump a lot closer to him when he turns back around.
Homer: You know, it, uh, won't fly unless somebody pushes the button. It's yours, if you want it.
Trivia: Homer Hickam's father's name is actually Homer Hickam Sr.; in the movie, the father's name was changed to John. The assumption would be that the name was changed in the movie to avoid confusion between father and son.