Other mistake: When they go under the coffin you see the flame of the torch in the background. How could the flame go under the petroleum with them without either setting light to the petroleum or being extinguished itself? (00:35:55)
Other mistake: When Indiana Jones first enters the castle and speaks with the Nazi officer he is mouthing the Nazi's dialogue as the Nazi is speaking. (00:45:55)
Other mistake: On the zeppelin, Indy's dad says, "You left just when you were becoming interesting..." Harrison Ford is mouthing Sean Connery's lines. (01:14:50)
Other mistake: At one point, Indy rolls off of the side of a tank, and somehow gets a strap around one of the guns pointing out from the sides. The end of the barrel has already been blown open by the rock he shoved in earlier. How did the strap get around that big cluster of metal, and then back again so he could climb back on the tank? (01:34:15 - 01:35:05)
Other mistake: While Indy and Henry are aboard the zeppelin Indy tosses Vogel out the lounge window, and when Vogel shouts up to the departing airship, in the next exterior shot we see the zeppelin airborne against a scenic view. Later, when Indy realises the zeppelin is turning around it cuts to another exterior shot of the airship, and the scenic view is identical to the earlier shot, only it's been flipped. The images of the zeppelin facing two different directions were composited onto the same scenic background.
Other mistake: When Marcus is knocked out at the library, look at his legs when he is dragged away - they are purposely crossed in a way which couldn't have happened naturally for a body being dragged - the actor did it to keep himself comfortable.
Other mistake: In the catacombs, Indy flips over the casket with the skeleton and dives underneath together with Elsa. If you watch closely, the skeleton gets trapped inside the casket, however Indy and Elsa are alone inside the casket. If the skeleton had sunken, there wasn't enough time, nor did Elsa or Indy bump into it when they dove underneath.
Other mistake: When Indy and Kazim are fighting on the the boat as it is being chewed up by the giant propeller, the propeller is more than half way out of the water; if the ship was in dry-dock the smaller boats wouldn't be able to go up to the larger ship, on the other hand if it had run aground it would not be running its engines.
Other mistake: Indy has been very careful to hide from everyone that Alexandretta is the city where the trail starts, only to give away all the essential info. He did not tell Elsa. Only Marcus (who has the rubbing of the crucial inscription) and Sallah knew. The only way that the Nazis find out is because he tells his dad, in a room which he KNOWS to be wired, i.e. bugged. (The Nazis also find the diary, but we know that the city isn't in there.) Stupidity doesn't quite cover it.
Other mistake: In the scene with the tanks, Indy rides up beside one with a rock. Watch the gun closely. The end of the one that he is supposed to shove the rock into is wobbling inconsistantly with the rest of the gun, or the tank for that matter.
Other mistake: In the motorbike chase scene there is a lot of flying road dust even in front of the bike in the lead. Probably from the camera vehicle.
Other mistake: At the library in Venice, Brody and Jones point out the Roman numerals in the library, wondering what they mean. Elsa comes over, and they show her. In front of her, behind the rail, is an obvious plate of glass. You can see her reflecting in it. The plate disappears in the next shot and never returns. The plate is not there in the longer shots. Where did it come from?
Suggested correction: I just watched the scene about five times and could not find any glass or reflections. All I saw was their shadows against the wall. Furthermore, it would make no sense for them to set up a big glass plate for one shot and only one shot.
I re-wound it several times. It's right at the beginning of the shot when Elsa comes from the right. It's brief but there. This was on a TV version. You may be watching a fixed version on DVD or Blu-ray. I'm sure the mistake has been corrected in later releases.
I think you are mistaking a shadow for a reflection. Or possibly it's just a video artifact. As the previous correction stated, why would there be a sheet of glass there?
I'm standing by my correction in this case. It just patently makes no sense why they'd set up a big pane of glass on their set for one shot then remove it. It wouldn't serve any purpose other than to catch light, and it would have also lightly messed with the way the background looked and the shadows the actors are casting. If it was a TV version, there's no way to tell what master they're using, how old it is, how it was stored, etc. It could have video artifacting or damage that caused the "reflection." (Probably just a light "ghosting" effect.) Heck, sometimes even your TV settings can cause issues like that. If you use any sort of motion smoothing or frame interpolation, those can create weird double images sometimes because the software doesn't always work properly.
Other mistake: After getting on aboard the dirigible, Henry is holding a German newspaper when addressing Indy. But he'd have a hard time reading it as it's upside down. Even if he's just trying to hide, holding an upside-down newspaper would draw the attention of suspicious guards.
Suggested correction: Henry Jones Sr. doesn't have his glasses in this scene. He can't really see anything on the newspaper, that's why he is holding it upside down.
I'd say that, more than anything, a hasty attempt to blend in would be more likely the culprit. Even without the spectacles, Henry, being the fastidious person he is, would have righted the paper, with or without eyewear.
But since he couldn't see the letters, how would he have righted the newspaper (or even noticed it was upside down)?
Ipon! (Japanese for "point.") I can see your point; however, I would ask that the following be considered: that there is usually more than just letters and words in newsprint. Even if not viewed, pictures are good indicators of the newspaper's orientation.
Other mistake: In the fighter plane scene, their hats don't blow away.
Other mistake: During the airplane chase Indy is seen firing his revolver at the German planes, after he crash-lands he pulls his revolver and breaks open the action to check if he's got any ammo left. He doesn't, but the issue is that a revolver doesn't eject spent shell casings, and there aren't any empty casings in his revolver, despite him firing his gun earlier and having no chance to empty the casings since.
Other mistake: When Indy is atop the tank with his father, he is facing his father. Suddenly, they show a close-up of Indy's face, head-on, with the Nazi leader behind him swinging a shovel towards Indy's head in the background. Indy gasps, and ducks. How did Indy see the shovel being swung at his head if it was completely behind him?"
