The plane that Quinn flies is a DeHavilland Beaver. Star Harrison Ford not only owned a DeHaviland Beaver, but he also flew the one in the movie. He had to go through several certifications for the insurance company to allow him not only to fly, but to also fly with the rest of the cast in the plane.
Harrison Ford:
[nuclear]
Ford pronounces "nuclear" as "nucular", much as Presidents Dwight D. Eisenhower and George W. Bush are famous for. See also Indiana Jones and the Kingdom of the Crystal Skull (2008).