Factual error: The episode states that there is border control between Germany and Czechia. There is no border control within the Schengen area of the EU (which includes Germany and Czechia). You can cross borders by car or fly in a plane without showing your ID.
Frequently Recurring Struggle for Existence - S4-E15
Continuity mistake: Rich hacks into a secret web conversation where a meeting is being set up. The meeting is to be at the Travis Hotel, Room 319, 3 PM. Shortly thereafter, talking about the finding, they say that the meeting is going to be at the Caris Hotel. (00:16:10)
Continuity mistake: The Japanese lady in the red jumpsuit in the fight scene on the roof is first wearing boots with a little heel, then when the fight starts the boots are flat.
Continuity mistake: When Zappata is cleaning after the murder on Kira, she hears something. When she draws her gun she is wearing gloves. The second after, gloves are gone. (00:30:30 - 00:31:00)
The One Where Jane Visits an Old Friend - S4-E16
Factual error: A newspaper clipping is shown saying a 15 year old boy became the youngest licensed pilot in Connecticut history. It goes on to say he finished his instruction, signed the paperwork, and took off again in a rented plane for his first solo flight. There are many errors here: 1 - The minimum age for even a student pilot's license is 16. For an unpowered glider, it is 14, but such was not the case here. 2 - Further, a student pilot is not a "licensed" pilot. 3 - In order to obtain a private pilot's license, besides all the written tests and practical instruction, the student needs to have completed: 5 hours of solo cross country flying; 1 solo cross country flight of at least 150nm total distance with full stop landings at 3 points; and one segment of at least 50nm between T/O and landings. So he could not have gone on "his first solo flight" after receiving his license. 4 - A new pilot does not have to sign anything. It is the Aviation Examiner that has to sign off the student and give him a temporary license upon satisfactory completion of the private pilot flight test. (00:26:00)
Continuity mistake: When the FBI is head to Iceland on the jet you see a rear view of the jet and it has four engines. When the team jumps out of the jet later you see a shot from underneath and it only has two engines. (00:13:15 - 00:25:25)
The Tale of the Book of Secrets - S4-E12
Character mistake: A Bed and Breakfast is named "De La Sol." That is incorrect in Spanish. Sol is masculine, and should be named "Del Sol." (00:15:15)
Sent on Tour - S1-E7
Factual error: When they are flying to Michigan, the scene in the air is of mountains that are definitely not between NYC and Michigan.