Factual error: In the Pope's coronation procession they play the anthem Zadok the Priest. It was composed by Handel for the coronation of George II in 1727, 235 years after this coronation took place.
Factual error: At the start the Robinsons are playing a game of fish, in weightless or free fall conditions. At about 1:30 the computer announces "Completing De-Orbit Burn." De-Orbit Burn involves deceleration. This is not free fall, they should be experiencing the deceleration and hence a sense of gravity. The cards should not float. (00:01:30)
Factual error: The communication delay for earth-moon communications is around 2.6 seconds. Yet Emma's daughter simply dials a cell phone and is connected to her Mom in space past the moon in less than that. The communication has no time lag. (00:18:45)
Episode #1.7 - S1-E7
Factual error: Lorna uses the word 'okay'. The first recorded usage of this word in America was not until 1839 and in Britain not until the 20th century. The series is set in 1814 and generally uses language contemporary to its setting.
Purpose in the Machine - S3-E2
Factual error: When examining the sand, Bobbi states "According to carbon dating..." Fitz finishes by saying "It's a billion years older than the earth." However, carbon dating is only good at determining the age of something to about 60,000 years old. The only thing carbon dating could tell about the sand is that it is 60,000 years old or older. It certainly couldn't determine that the sand was 5 billion years old.
Sanctuary for All: Part 1 - S1-E1
Factual error: When Ashley's Desert Eagle is empty, the slide doesn't lock open.
Children of the Gods (1) - S1-E1
Factual error: The escort for Colonel O'Neill is wearing both Major and Staff Sergeant rank insignia. Probably what the writers thought was a "Sergeant Major", which does not exist in the Air Force. Major is a commissioned officer, sergeants are non-commissioned officers.
Factual error: In the opening scene, the Clampetts are driving home from Malibu. From Malibu to Beverly Hills is east. But as they head home, the ocean is on their left, which means they are driving west.
Factual error: A secret file is password-protected on a computer, requiring a six-digit numerical access code. KITT states that the possibilities "are virtually unlimited." In truth, if each digit can be 0 through 9 (numerical meaning no letters or symbols), the possibility is 1 in 10^6, or 1 in a million. A supercomputer like KITT should have no problem running each number systematically until a correct code is found.
Factual error: Any time FBI agents enter Mexico, they are always armed. Mexican law prohibits U.S. Agents from bringing weapons into Mexico.
Factual error: At an 1868 church service, Mark sings "How Great Thou Art." While the tune of this hymn is 19th Century, the English lyrics he's singing weren't composed until the 1920s.
A Nice Place to Visit - S1-E14
Factual error: When the team is in uniform for their friend's funeral, Smith and Peck (both commissioned officers) have their Special Forces insignias on their berets when they should have their rank insignia.
Pooh's Double Trouble / Eeyore Sleeps on It - S1-E19
Factual error: The letters and symbols on the characters' reflections in the mirror look like their regular counterparts, when they're supposed to be in reverse.
A Sympathetic Crotch to Cry On - S2-E21
Factual error: Three times during the episode, when Jake is playing his DS, one of the characters plugs in the headphones. However, the cable is inserted into the socket for the charger on the top of the DS, instead of the headphone socket, which is located on the bottom.
Factual error: Alan takes out a member of his staff on a Valentine's Day trip. When he is in the car with her, there are some outside shots of them driving along. The problem is, on or around the 14th of February, there would be no leaves on the trees. (00:17:30)
Goober Goes to an Auto Show - S8-E22
Factual error: Goober and the Taylors stop and get gas in Raleigh before heading back to Mayberry. As they are waiting, a Coors Brewing Company truck is seen driving past the service station. Coors Beer was not sold east of the Mississippi River until the mid-1980s.
Factual error: In Season 2, Episode 3, Peter and the Irish family rob the bookmakers and the security guards shoot at them. In Ireland, even the police don't carry weapons. Let alone security guards.
Factual error: Despite the several episodes containing serious offences like murder, you never see two barristers on any side. It is usual with serious offences for each party to have one Queen's Counsel and a junior, and although there are exceptions, we never ever see this very common practice in any episode.
Factual error: The originally-aired version spelled the word "Acquisition" without the "c" and it appeared in the credits as "Aquisition." This goof has been corrected in the DVD versions.
Factual error: In the final scene where Grace Mayberry's house is raided in Trenton, NJ. a New Jersey State Trooper is wearing a badge on his chest. The NJSP has always worn a triangular shaped badge on their hats.