Continuity mistake: At one point, during the scene with the helicopter dogfight, the tail wing of Bond's mini-copter is riddled with bullet holes (and yet the mini-copter continues to fly very efficiently), but for the rest of the scene, the tail wing is in perfect condition with no sign of the damage done to it. (00:56:40 - 00:58:45)
Continuity mistake: When Bond and Kissy jump into the ocean to avoid the poison gas in the cave, you can see Bond's skin through his shirt. When they come ashore on Blofeld's volcano island, Bond takes off his shirt to reveal a grey ninja outfit underneath, complete with huge rubber suction cups for his hands and knees. Where did he hide all that?
Continuity mistake: When Blofeld is just about to shoot Bond with a Webley & Scott Mk. IV revolver in .455 Webley caliber, Blofeld's hand is hit with a ninja throwing star. However, the gun he drops isn't the Webley, but a Smith & Wesson .38 Special.
Continuity mistake: In the scene where divers are recovering Bond's "Body", you can see that one of the divers has two tanks on his back, then in the next shot he only has one tank, then two again.
Plot hole: Blofeld tells the bad guys that they had Bond and let him get away. The woman says "but Bond is dead. It was in all the papers." As we saw in a paper near the start, there was a well publicised photo of Bond, and when she met him he wasn't using any kind of disguise, so how did she not recognise him if she'd seen the papers?
Plot hole: The ferocious battle in the crater ends instantly when Bond blows up the space ship. Why? Aren't Blofeld's men still going to try to defend themselves? How do they know Bond has succeeded in his mission? They can't see the control room, let alone the television sets.
Continuity mistake: While Bond prepares "Little Nellie" for flight, a Japanese technician removes the red rotor tether from the front of the Autogyro. In the next shot, while Bond is putting his flying helmet on, the tether is still attached to the rotor. (00:51:30)
Plot hole: Right after Bond escapes Blofeld and joins Tanaka and Kissy, they say they need to get to the control room (that Bond just left from), they look at the "front door" to the room and Tanaka says "Impossible! It's too well defended!". Why did they not go back the way Bond just came from, through Blofeld's "apartment"? Instead, they fight their way across the entire launching complex and go through another entrance, which ALSO leads through Blofeld's apartment.
Factual error: Two rocket lift-offs are shown. For the American lift-off, they show an Atlas-Agena (American) rocket booster but for the Soviet lift-off, they show a Gemini-Titan (also American) rocket booster. Compounding the mixup is that the film's Jupiter capsules are basically just Gemini craft, which are seen atop what the film presents as the Russian rocket.
Revealing mistake: When the submarine surfaces with the life raft on the casing at the end of the film, the water movement looks a bit odd because the scene was actually shot with the sub diving and floating the raft off, the film then being played backwards.
Continuity mistake: In the scene at the end where Bond is trying to make Blofeld's spaceship blow up, you can see the timer showing the time till interception. On the 1st shot the timer shows 25 seconds. On the second shot it says 13 seconds. Then there is another shot and the timer shows 24 seconds.
Factual error: In the scene where the ninjas are attacking the volcano, they are armed with rocket guns. While the rocket guns, MBA Gyrojet Rocket Carbines, are real, their 13mm rocket cartridges could barely beat out a .45 ACP pistol cartridge in stopping power, not to mention they couldn't cause huge explosions like they did in the movie.
Plot hole: In the volcano base, Bond finds and frees three captured astronauts - two Russians and an American. But when they enter the SPECTRE astronauts' room, there are only two of them with Bond (and there is no indication that the third one was seriously hurt in the previous struggle with the guards); and after Bond is dressed in the spacesuit, they disappear from the story altogether.
Audio problem: In the volcano's control room, there is a husky guy in red uniform whose only purpose is to open and close the crater. Every time he opens or closes the crater he says with a deep voice, "opening crater, closing crater." When Bond kills him with the rocket cigarette to open the crater and let the ninjas in, and the guards have subdued Bond, the guard in white uniform who closes the crater says, "closing crater," and you can hear that it's the dead husky guy's voice.
Other mistake: When James Bond is in Tanaka's underground train enjoying the sake wine. One servant enters saying that the photograph is ready for viewing. This servant then walks to the door, which is on the left-hand side of the carriage. After going through the door, we can see the servant taking a left turn, but where to? Outside the moving train? (00:30:50)
Plot hole: At the end, we see pictures of the space shuttle several times on a TV screen. Where is the camera to film that?