In Case You Missed It
Aspen Avionics AT300
Aspen Avionics AT300 is designed to be a drop-in replacement for a vertical speed indicator, but you'll get a lot more usable information in the cockpit when you couple it to your GPS; by Rick Lindstrom.
Old Plug Washers Never Die…
New spark plugs always come with new washers—but if you're like most people,...