The Antonov An-2 is a 12 passenger slow-flying biplane used for light utility, parachute drops, crop-dusting, atmospheric sampling, forest fire water-bombers, flying ambulances and more . Antonov cargo planes slow flight and excellent field performance make it well-matched for short, unimproved fields. The Guinness Book of World Records states that the 45-year production run for the An-2 was for a time the longest ever, for any aircraft, but it was recently exceeded by the Lockheed C-130 Hercules. The Antonov 2 have a 1000hp nine cylinder radial power plant.
Owners and Operators have their own group at http://www.an2flyers.org/