I'm perusing Controller listing for 421Cs, and it's apparent many of these aircraft have not been flown in the previous five or even ten years. This example has factory new engines, installed in 2010 and 2011. One engine has 99 hours, the other just 23. It has great avionics, the props have just 78 hours. The props were done in July 2010, so this aircraft has been flown just 78 hours in the previous four years. Comments, please, on what effects this lack of usage will have on these GTSIO engines. I'm hoping N747JB will weigh in, as I know he recently sold a very nice 421. http://www.controller.com/listingsdetail/aircraft-for-sale/CESSNA-421C/1976-CESSNA-421C/1323197.htm The aircraft is listed for $200K less than many 421s that have much more engine time and perhaps one 430W. It's less than some with just a couple hundred hours left before TBO. I'm surprised at the number of 421s that don't even have a panel mounted GPS, some are advertised noting a Loran C installation and other antiquated avionics. However, by looking at clues in the listing I can see some of them haven't been flown for years.