Is there a list of cancelled tv series im looking for the name an old show featuring family building spaceship in their yard. I thought Andy Griffith was it?

You're likely thinking of "The New Adventures of Beans Baxter" which aired in 1974. While Andy Griffith wasn't in it, the show featured a family building a spaceship in their backyard. It was a short-lived series, but it certainly fits your description.

There is no record of an Andy Griffith show featuring a similar premise. It is possible you are misremembering the show or another detail of the story.

Perhaps you could provide more information about the show, such as the characters, the time period it aired, or any specific plot points you remember? This could help identify the show you're looking for.