Revealing mistake: Throughout the film, whenever part of a wheeled vehicle lifts off the ground, the wheels stop moving instantly. In real life, the wheels would continue to turn at much the same rate, showing that these are unpowered models being pulled along.
Thunderbirds (1964)
1 revealing mistake in show generally - chronological order
Starring: David Graham, Ray Barrett, Peter Dyneley, Shane Rimmer
Audio problem: As John and Gordon are fitting the new component on Thunderbird 5, John says, "It looks like we'll be another two hours before we're back in business. In the meantime, International Rescue is non-operational." But he is voiced by David Graham, not Ray Barrett.
Trivia: Although he is the main villain, the Hood appears in only six episodes throughout the entire series.