FAA just announced findings in the fatal crash of a 180 last year that killed an Anchorage city official. The pins that hold the seat in place failed, causing the seat to slide off its base and the pilot to lose control of the aircraft (he couldn't get to the controls). They also reported that Cessna provides a free backup system to prevent this from occurring, but only about 10% of all Cessnas in Alaska are equipped with them. The setup will only be offerred until May. Please, if you fly a Cessna, check into it! It could save your life, and a free insurance policy usually makes good sense!