John Travolta has found a historical error in Quentin Tarantino's Once Upon a Time in Hollywood. The actor is currently out promoting his latest project, Fanatic, and revealed the error during a recent Q&A screening event. Tarantino is partly responsible for getting Travolta's career reignited in the mid 90s with Pulp Fiction and he is a big fan of the director's work. This led Travolta to theaters to see Once Upon a Time in Hollywood.

In addition to being a world-famous actor, John Travolta is also a registered pilot and a self-proclaimed "aviation nerd." This extensive history of flight knowledge is how he noticed the historical error in Once Upon a Time in Hollywood. Travolta had this to say about his discovery while watching the movie.

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"Leonardo [DiCaprio, who plays Rick Dalton] is going home from Italy or wherever he was, and the narrator says that he took a 747. Well, the 747 had its test flight in February 1969, but it went into service in January 1970. They're nine months off! He would have been on a Boeing 707!"

After all of the research Quentin Tarantino did for Once Upon a Time in Hollywood, he might be kicking himself for not consulting with his old "aviation nerd" buddy. But, the historical error did not keep John Travolta from enjoying the movie. After all, it's the director's take on that time in history, which he plays with and does his own thing with. The movie also brought back a flood of memories for Travolta. He explains.

"I remember being there in the city when all of this was happening. I remember being scared because of Sharon Tate being killed. It triggered far more real memories than anything from filming Pulp Fiction. I was right there in the moment with everyone else and that's what's so great about Quentin as a filmmaker. Like with Inglourious Basterds, he sort of repairs our history.'"

Once Upon a Time in Hollywood is history filtered through the mind of Quentin Tarantino. If you've seen the movie, you know that historical accuracy wasn't exactly what he was going for when crafting the story, though it has many factual elements based on reality from that particular era. As John Travolta notes, this is not the first time that the director has done something like this.

Once Upon a Time in Hollywood is arguably one of Quentin Tarantino's best works and he is getting a lot of attention for it. The movie was just nominated for five Golden Globe awards, including Best Director, which should end up in some Academy Award nominations too. For now, filmmakers should be on the lookout for their aviation mistakes and maybe consider calling Travolta to help out in that department. Travolta's thoughts on Once Upon a Time in Hollywood were first reported by The Wrap.