Meteorological observation aircraft. Specially modified for atmospheric, geophysical, high
elevation observations at mountain ranges. Engine performance was boosted by TK-9 turbocharger, providing 850hp up to
Special observation cockpit added at the tailfin root, providing excellent sight for observer.
First flight was performed on March 21, 1948 (pilot V.A.Didenko).
An-6 with V.Kalinin on controls captured two international altitude records for aircraft with 3000...6000kg takeoff
December 12, 1953 - 10293m;
June 9, 1954 - 11248m;
Production batch was built in 1956-1958;