Other mistake: Ritchie's 1950's Fender guitar amp looks like it would have looked in the 1980's when it should have only been a couple of years old in the movie.
La Bamba (1987)
1 other mistake - chronological order
Directed by: Luis Valdez
Starring: Lou Diamond Phillips, Elizabeth Pena, Esai Morales, Rosanna DeSoto
Plot hole: When Ritchie appears at a pizza party sponsored by a local radio station, his manager Bob Keane is handing out copies of Ritchie's first album. In reality, the album had not been released until April 1959, two months after Ritchie's death. As the actual LP includes his biggest hit "Donna", Ritchie had not yet recorded (or even composed) the song in this part of the movie until a few scenes later.
Bob Morales: Look it's Woody Woodpecker and Buzz Buzzard, Man they make cartoons here.
Trivia: At the dinner party, while somebody is recording with a camera, there a lady with blonde short hair, she is Concepcion Valenzuela, Ritchie Valens' real life mother.