Revealing mistake: During the fight scene in the belly dancer's room, Bond spins the bald guy around to avoid being hit by a chair. When the bald guy gets hit in the back with the chair, you can see a large rectangle of padding under his jacket.
Factual error: The scene in which the Beechcraft Baron hits the Boeing 747 in flight plumbs new depths in cinematic absurdity. Assuming both aircraft are at their normal cruising speeds - they appear to be - and the Beechcraft has half a fuel load left, it will hit with the same energy as 7,700 kgs of TNT. The Beechcraft Baron weighed 3,200 kg and the two aircraft would have a closing speed of something like 700 kmh. Even a glancing blow would tear the entire front half of the 747 to bits - there would be virtually nothing of the fuselage left intact all the way back to the wings, and the film shows the two aircraft on course for a head on collision.
Revealing mistake: Watch carefully as the statue falls on the bartender. It barely touches his chest and rests on his left thigh. As the bartender slumps dead you can see a wide open gap between his whole upper body and the statue. Even if it crushed his thigh it would not have killed him so quickly. When the bartender slumps down the statue rocks freely as he brushes against it; obviously a styrofoam replica.
Continuity mistake: In the scene where Thunderbolt and Lightfoot are in the car with the crazy driver. The car goes over the embankment and as it flips you can see a wheel break off. A short time later they both drive off in the same car, with the wheel attached again.
Continuity mistake: During the chase where Larry's Charger knocks a police car in the river, the '69 Charger becomes a '68 Charger in one shot, as seen from the front. The '68 has a different grille than the '69 models. (01:09:40)
Continuity mistake: When Hadrian jumps the mustang over the upturned car, the film slows down to show the jump in slow motion. When the car lands, it hits so hard the car spins around and ends up facing the cars it jumped. The scene is then repeated at normal speed, but just as the car would be shown spinning out, a shot of the car driving away from the accident is shown.
Visible crew/equipment: When Stuart Margolin closes the car's door at the airport after putting the going-away present in Charles Bronson's suitcase, the camera's shadow is seen in the door.
Revealing mistake: In the office tower after the quake there is a panic and workers rush down the stairs only to find them fallen away. After two women fall to their death a man is left hanging on a girder, but falls onto a giant piece of glass. Look at the top of the frame and you will see the airbag shooting our from under it.
Continuity mistake: There are a number of scenes (stable house, car, hotel) showing Claudia wearing a green harness dress. It is quite obvious that she is not wearing a brassiere in all of those scenes. In the hotel room, where Foxy and Claudia meet the judges, Claudia removes the green dress and is now wearing a bra. It would be highly unlikely that she would be putting one on, at the same time she is getting undressed. This was obviously done to cut down on nudity in the film. (00:41:30 - 00:47:45)
Visible crew/equipment: In the scene where Herb Edelman is explaining to Richard Jordan exactly whom Robert Mitchum is going to see, a microphone can be seen at the bottom of the screen, just under the low coffee table.
Continuity mistake: During the battle at the convent, one of the Cardinal's guards takes aim with his matchlock musket, is shot by Portos, and falls - along with his gun - into a hay wagon. But if you watch the falling scene closely, it is evident that only the man ends up in the hay; the gun should have fallen some place to the left of the wagon.
Other mistake: When Sir Anthony Hopkins (playing Johnny McLeod) is awaiting the arrival of the suspected bomber O'Neill (played by Cyril Cusack), a funny mistake occurs. Cusack sees Hopkins, smiles and greets him with a cheerful "Hello, Tony!" instead of "Hello, Johnny!" Being a pro, Hopkins doesn't blink an eye!
Revealing mistake: During the chase that opens the movie, the guy trying to escape shuts the door labeled "Back Stage" behind him. The various goons try to push it open, but only the badass villain with the charismatic afro can do it using his palm strikes. Sort of though, because just before he shows up in front of the door, you can see the door was unlocked and opened under the push of the normal minions, with the light fully showing between door and frame. (00:03:10)
Audio problem: As McQ is attempting to escape from the hoods by driving down the beach in a 4-door automatic Belvedere, you can hear manual transmission upshifts occurring.
Other mistake: The Amazon's queen says she pierced Dharma's chest with her spear/lance but he's shown dying from a side wound.
Suggested correction: What matters is how much of the small plane's kinetic energy was deposited in the 747's structure. A glancing blow would deliver less energy than a head-on collision, because it lessens the total time interval of the impact. Another important thing is if the small plane shattered or stayed largely in one piece during the collision. If it promptly shredded on impact, then each little fragment carried away its portion of the total energy. Smaller pieces of something as light as that plane would immediately get caught in the powerful airflow and be diverted around the 747.
Absolute rubbish. Airliners do not survive mid air collisions.