The practical value of active versus passive sidesticks became clear during the investigation of the 2009 Air France 447 accident in the South Atlantic. The aircraft, an Airbus A330, was equipped with passive sidesticks. That meant that in the dimly lit cockpit of the Air France jet that stormy night, the pilot in the left seat was unaware of precisely what inputs the right seat pilot flying the aircraft the pilot was using as he attempted to regain control of the aircraft after an upset. Specifically, the flying pilot was holding full aft stick on the A330, essentially keeping the 242-ton aircraft’s wing stalled. The Airbus never changed that attitude until it struck the water.