Pit of Peril - S1-E2
Visible crew/equipment: At the start of the episode when there are close-ups of Colonel Sweeney's face, studio lights can be seen in the reflection of his sunglasses.
Thunderbirds (1964)
1 visible crew/equipment mistake in Pit of Peril
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: Jeff Tracy's five sons were named after Mercury astronauts - Scott Carpenter, Virgil Grissom, Alan Shephard, Gordon Cooper and John Glenn.