Revealing mistake: Just after the helicopters crash during the chase with the crop duster keep a close eye and one of the helos is still in the shots flying.
Revealing mistake: When the Lear jet is getting ready to make the emergency landing in the desert, James Brolin calls for full flaps. As we see the jet land, we can see that the flaps are indeed down. When the dust clears we see that the jet has made a wheels up landing since they lost the left gear on take off. However, the flaps are up.