Factual error: At the beginning of the movie, Indy escapes in biplane with registration OB-CPO (a Star Wars nod, as noted in trivia). However the OB registration is used by Peru, and it should be followed by four digits, not by three letters. (00:12:10)
Suggested correction: Simply not true, as with most countries with two-letter civil aircraft registrations, Peru used the XX-YYY format at this time: http://www.airhistory.org.uk/gy/reg_OA-.html.
Corrected entry: When the Nazi soldier is killed by the airplane blades, some of his blood splatters on the pilot cabin glass where Marion is, but in the next shot, the blood has totally disappeared from it. (01:20:24)
Correction: This is incorrect. First, the blood splatters on the gunner's turret cabin glass, not the pilot cabin one. Second, Marion crawls from the gunner's turret cabin to the pilot cabin, where there is no blood. Also, this last point is not shown exactly in the next shot, as this mistake suggests.