“Does anyone have the engine failure data referenced here?”
I think the data was on structural failure, but it may have included engine failure as well, there was a lot of it covering many years. It did indeed show that LAA permit aircraft, excluding micros (micros were not included in the data I read but were added later) were more reliable than C of A. You may well find it on the LAA site under consultation and lobbying, but you may have to be a member (recent changes to the web site and technical issues have got very confusing for us users). The data was accepted by the CAA and the restriction was lifted on that basis. John Brady was the man who did the work, but Brian Hope may also be able to help.
Rod1