Thank you for talking out your rear end. The Cavanaugh CASA 2.111 has been flown many times, as was the CAF's 2.111. They were both most certainly fully restored, I've been inside both, and they had received full workovers after being purchased from Spain. Both aircraft were veterans of the Battle of Britain film and the Cavanaugh 2.111 served in the active Spanish Air Force until 1975 (possibly being the last 2.111 in service). In addition, Cavanaugh's Ha-1112 is a BoB film vet as well, serving with the Spanish Air Force until 1967.
Before you go saying something isn't airworthy, or hasn't been restored, try checking the history of the aircraft. More importantly, try going to the museum's own website which has a large entry on its 2.111 and history.
http://www.cavanaughflightmuseum.com/CASA-2111E.htm