Corrected entry: When the Zeppelin takes off, you see the German officer has fallen into a pile of bags. These bags obviously belonged to the passengers on the Zeppelin, so why weren't they on the Zeppelin when it took off? (01:12:55)
Corrected entry: When Indiana Jones is escaping with his father and he sets off a boat as a decoy, there is no large crate on the dock. But a few minutes later, when the Germans show up, as they start going towards the boats, a large crate has suddenly appeared on the dock, from which Indy and his dad emerged on a motorbike.
Corrected entry: The film is set in 1938, yet the Jones' fly to Europe from America on a commercial airliner and attempt to leave Germany in a Zeppelin. Pan America's first commercial transatlantic airliner didn't take off until May of 1939, and commercial Zeppelin flights were suspended after the Hindenberg's crash in May of 1937.
Corrected entry: When the operators try to shoot Indy and his father as they rotate back into the burning room, the bullets flying towards and ricocheting off the rotating wall are evidently tracer bullets. Normally, tracer bullets are not normally issued for handguns; they are used more for rifles and machine guns.
Corrected entry: When Indy makes a rubbing of the knights' shield in the tomb under the library, he dives underwater with it. This would ruin the paper and make it unreadable, yet we see him later with it and it's perfect. There's no way he had time to seal it in a water-tight container before he dived.
Corrected entry: That knight in the temple of the grail - how does he know contemporary English after spending centuries in that cave? He's only alive because of the water - he's not imbued with mystical futuristic knowledge. A Medieval English knight (assuming he even is English, since Crusaders came from all over Europe) would be speaking either Old French or Middle English, neither of which would make any sense to the modern ear; they'd both sound like foreign languages.
Corrected entry: On the zeppelin, after Indy knocks the Nazi out, everyone stares at him in horror and confusion. He says to them, in plain English, "He didn't have a ticket" and EVERYONE on the zeppelin responds by getting out their tickets. The problem is, it's a German zeppelin leaving Berlin. Even if there were some people on board who knew English, it's highly unlikely that everybody on board would.