Audio problem: In the scene when the plane slides down the hill into the water you hear the classic Hollywood sound used for jumbo jet engines dying out by hitting water. The problem lies in the fact that that engine would have been off by then, either by impact, or by the planes automated systems. Even if it was somehow still running you don't hear it until it dies.
Audio problem: When Noah and the rest of the gang are chasing the Chinese man, Noah is the only one on foot. He sees the Chinese man get in a cab and calls for backup. The rest of the gang arrives seconds later. As Noah gets into the SUV, the sound of the car door closing can be heard before it actually does close (and it never really does in that scene). (01:19:20)