Lou Churchville remembers well his checkout in the PC-6 Turbo Porter. “I knew that it was going to be dramatic,” he recalls years later, “because the flight instructor was kind of fidgety.” They were cruising at 8,000 ft. over France, readying for a “beta” descent to landing. The procedure called for approaching the runway touchdown zone at a 45-deg. angle, slowing to 75 kt., and as the numbers disappeared under the nose, selecting 100% on the propeller, ...