Please answer the following question about this movie plot. If it's un-answerable, please output "No answer". Question: What does Ritchie have a fear of? Movie plot title: La Bamba Movie plot: Richard Steven Valenzuela (Phillips) is a normal teenage boy who becomes a rock 'n' roll superstar under the stage name Ritchie Valens. He meets and falls in love with fellow high school student Donna Ludwig (von Zerneck), for whom he wrote a song that became a number two hit ("Donna"). However, Donna's father is shown as having issues with his daughter dating a Mexican-American, which causes friction between Ritchie and Donna. The movie also has several subplots, such as his relationship with his mother Connie Valenzuela (DeSoto) and half-brother Bob Morales (Esai Morales), and the jealousy Bob felt toward Ritchie's success. In one scene, Bob wins an important art contest that helps promising cartoonists, only to throw away his prize because, in his mind, his mother does not seem to care enough. Bob resorts to drinking heavily and, at one point, leads him to yelling in a drunken rage in front of his mother's door, "I want to see my daughter!" in reference to the child he sired with Ritchie's first girlfriend Rosie (Pena). However, when they get an opportunity, Ritchie and Bob sneak out for a good time. On one occasion, they take a road trip to Tijuana, visiting one of the local clubs where Ritchie discovers the song that would eventually become his signature song, "La Bamba". Unlike the portrayal in the movie, the outing to Tijuana was actually a family trip. The film also focuses on Ritchie's aviophobia (fear of flying), triggered by a recurring dream he has as a result of a midair collision between two planes that actually occurred directly over Ritchie's school, in which Ritchie's best friend was crushed to death by one of the fallen aircraft (Ritchie was absent from school that day to attend his grandfather's funeral). At first, Ritchie manages to avoid flying to his concerts and appearances; but he must eventually conquer his fear when invited to perform his song "Donna" on American Bandstand. Ritchie's record producer and manager, Bob Keane (Pantoliano), helps him by giving him a little vodka to calm...
A:
flying