Destination Moon: Part 1 - S3-E9
Continuity mistake: To launch the model rocket into outer space, Tintin pushes a lever with a green handle. Once the control tower is told to engage the nuclear motor, the first lever that Tintin had pushed is now a blue lever and the second lever that Tintin is now holding onto is a grey lever. Two shots after that, both the levers are now green. (00:16:00 - 00:16:35)