 The first production airframe was flown in early 1994 and renamed the "Su-34" (NATO reporting name 'Fullback').Development of a version for the Soviet Navy called the "Su-27K" (Russian for "Korabyelny" - "Shipborne", NATO designation 'Flanker-D') commenced not long after the development of the main land-based type.Some of the T10 demonstrators were modified to test features of navalized variants for carrier operations.