Fire in the Hull, the Gipper's Bombshell and Electric Tricycle - S15-E9
Factual error: It is stated that exhibits in the Pima Air and Space Museum include a 1964 F/A-18 Super Hornet used by the Blue Angels. The FA-18 Hornet did not enter service until 1983, and the Super Hornet did not enter service until 1999.
French Connection, Shipwrecked Gold, Area 51 Plane Crash - S2-E4
Factual error: The SS Central America's route is shown sailing through the Panama Canal on its route from SF to New York in the 1850s. Unfortunately the Panama Canal did not open until 1914.
Peeping Butler, Beaver Bomb, Mother's Day Mother - S8-E8
Factual error: The founder of Mother's Day sees a sign in a lunch counter window advertising "Mother's Day Salad $5." That would be highly unlikely. Five Dollars in 1922 is the equivalent of $71.25 today. nobody would pay that for a salad - then or now. (00:18:50)