Factual error: After crashing headfirst into the water, the airplane is not damaged "correctly" at the end of the movie. The front shows little damage, when it should be crushed and the back has come apart, despite taking the least amount of impact from the hit.
Factual error: When Jeff Tally gets the first call from the little boy Tony, he checks both his cells. The blue Nokia is ringing however there isn't an incoming call on his phone, you see that as he has the two options, either "clear" and "options", meaning that the seven numbers have been typed in. (00:45:00)
Factual error: It's been established, that the burning of the lepers ship happened in 1871, yet when one of the city's "founders" pulls his gun on Blake, it's an 1873 Colt Single Action Army, a gun that didn't exist 'til two years later.
Factual error: On Day 3, look at The Embrey Star newspaper when it zooms into the headline. Above the headline is the newspaper's web address, hardly appropriate given the paper is from 1980.
Factual error: This movie takes place in 1850, but the "Confederate States" and "Confederate army" are mentioned. There was tension between "free" and "slave" states in 1850, but the American civil war was 11 years in the future.
Factual error: In the first scene at the Pentagon, the sergeant tells the other officer that all satellites are being put into geosynchronous orbit to "hide them behind the planet." But objects in geosynchronous orbit don't remain hidden behind the Earth relative to the sun; they orbit once a day, remaining over a particular longitude on earth. Therefore, they would be subjected to the magnetic storms every day, during daylight at that longitude.
Factual error: The bat signal at the end of the film defies physics. The spotlight is a few feet across and is projecting the signal onto clouds far above. To do this, the light beam should get wider as it climbs up (like a flashlight's beam aimed at the ceiling). Yet the shot of the clouds shows rays of light getting wider as they go downward, like sun rays through the clouds. For this to exist, there's either a bat signal floating far above and through the clouds, or the one on the roof needs to be several miles wide, focusing a beam that narrows as it climbs. (02:09:15)
Factual error: When Domino is talking about when her dad took her to the fair and won her a goldfish, she states this is 1993, but in the flashback of the stall where she won said fish, there are lots of "Finding Nemo" toys hung around the stall. This film did not come out till 2004.
Factual error: In order to be electrocuted you need to connect a high voltage to a low voltage. Touching a power line does not get you electrocuted unless you make contact with the ground. So electrocuting the locusts by making them fly against a powerline can not work because they are not 'grounded'.
Factual error: When Hurricane Eduardo strikes Dade county, the news reports that "it's a definite category 5," and that "the winds have to be gusting at 150 mph." Even if the winds were sustained at 150 mph, it would only be a category 4 storm. If 150 mph is only the speed of the gusts, it's not necessarily even that strong.
Factual error: When Mr. Creedy is firing his revolver at V after his men have been killed, the camera, positioned presumably inside the revolver behind the cylinder, shows two empty chambers out of six total, but Creedy eventually fires 5 shots. During this same sequence one of the empty chambers lines up with the barrel, but Creedy's gun somehow fires. Also, if the camera is behind the cylinder, the chambers would still have loaded cartridges or shell casings in them, they wouldn't be empty. (02:12:00)
Factual error: At the end of River's first fight scene, Simon says a phrase that renders River unconscious. The phrase is "Eta kuram na smekh" and means "This is laughter for chickens", or "This is absurd" in Russian according to Joss Whedon. However, the subtitles on the DVD for the phrase are "(SPEAKING CHINESE)", not "(SPEAKING RUSSIAN)" like they should be. In fact, shouldn't the subtitles just say "это курам на смех"? (00:35:45)
Factual error: When Bobby turns his truck to beat up Jack you can see the license plate on the back of the truck, It is an Indiana plate, but the one used for passenger cars only. Indiana truck plates are plain white with blue numbers.
Factual error: A helicopter flying over the bank can be seen to have a Canadian registration number (beginning with C). A Seattle news or police helicopter would actually have an American registration number (beginning with N). (00:17:05)
Factual error: When Reed and Sue are testing the Human Torch's powers, they claim that a temperature as high as the Human Torch's (5000 K to 6000 K) will "ignite the atmosphere and destroy all life". This is incorrect. Many experiments in the lab and on the field have produced temperatures several orders of magnitude larger than the temperature of the Human Torch on a similar scale. Nuclear explosions can generate temperatures in excess of 8000000 K, and temperatures produced by the largest X-ray generator (the Z machine) have been as high as 3700000000 K. Such tests have not ignited the atmosphere.
Factual error: During the bike chase towards the end, as Cloud and Loz/Yazoo crash through the security gate, you can see that the lettering is misspelled: "Authorized Parsonnel Only." It should read "Authorized Personnel Only."
Factual error: During the bank car heist at the start of the movie, the guard who leaves the drivers seat and fires with a rifle fires way more shots than is feasible without reloading at any point.
Factual error: Loosely based on the novel by Jules Verne, the entire story takes place on a remote Pacific island in the early 1860s. However, as pirates come under attack by a sea monster (in the second half of this two-part film), a modern fishing trawler or tugboat appears momentarily on the far right of the screen. (00:59:05)
Factual error: The DC shore based radio operator mistakenly tells the last known coordinates of SS Poseidon as 28° East longitude and 80° from Greenwich. That is nonsense because both mean longitude. Even though it can be assumed that what she really mean is Latitude: 28 degrees South and Longitude: 80° East from Greenwich, that is still not enough to specify the ship's position as the margin of error is about 400km. (01:25:20)
Factual error: The trip goes back 65 million years. This is the late Cretaceous period. The Allosaurus was a Jurassic period dinosaur, which became extinct before the beginning of the Cretaceous period. Granted, the Allosaurus was probably the most powerful predator of its time, the events in this movie take place long after the time of the Allosaurus.