From everything I have watched on commercial air travel, things that make passengers on edge are usually well within the physical operating limits of the aircraft. Think of the landings an F14 carrier fighter pilot must do...has to go from aprox 180knts to 0 in 200ft, cross winds, runway is pitching up and down, runway is moving, must land at full throttle, and at night...at 3 miles out, the runway resembles a lightning bug on your windshield!