DENVER (KDVR) — A preliminary investigation into the plane that caught fire and injured 12 people at the Denver International Airport in March reportedly found many faulty parts on the plane.

The National Transportation Safety Board released the preliminary report on the American Airlines plane, a Boeing 737-823, that took off on March 13 from Colorado Springs Airport to Dallas-Fort Worth International Airport before diverting to DIA and ultimately catching fire.

According to the initial investigation, the report said the plane's engine experienced "vibrations" during takeoff, but the flight continued. The flight crew reported that one of the engines briefly overheated, and they ultimately decided to land at the nearby Denver airport.

The report found that there was fluid leaking from u

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