How to start the Cessna 421. The most important thing is to start them at idle. The props on these airplanes are huge and the engines are geared. So you don’t want to hit the gears and try to turn those props at a high rate. After they start in idle you can push them up to 800 to 900 RPM. Keep them under 1000 until you have 100 degrees of oil temp. #fly #pilotlife #aviationlovers | Tommy Hill