I think Transport Canada give the best illustration showing that slavish use of check lists, some of which are as long as the Dead Sea Scrolls, including forty five minutes idling in a King Air before even taxying, {I kid you not, we timed them!} and then having more gear up landings per hours flown than ANY other OC holder in Canada, during my time in the Ottawa area I can recall at least three! Is it any wonder Treasury took away their toys! By the way, please don't give me the usual, "Its because they only flew fifty hours a year", that's about what most retractable owners fly, but they scrape the paint of the underside at a much lower rate.