The Dr. Decker is a small plane added in the Golden Age of Aviation event, which lasted from mid September to mid October. It costs 65 Pilot Helmets, which was used as a currency during the event. The Dr. Decker is probably the most popular small plane added in the update, mainly because it gives so much XP compared to the time it takes to return.
Time: 2 hours
Charge-Up Time: SLOW