5 obtiskových variant:
1. C-11, Zieldarstellungstaffel 21, DDR, 1961
2. C-11, Display team "Major Seppel", air-parade Cottbus, DDR, 1957
3. C-11, LSK/LV, DDR, 1956
4. C-11, No. 777229, Langenlebarn/Tulin, Austria, 1956
5. C-11, No. 170103, D-FYAK, Kirchheim unter Teck, Germany, 2007
The first prototype of the new trainer, designated Yak-UTI or Yak-3UTI flew in late 1945. It was based on the radial-powered Yak-3U, but with the new Shvetsov ASh-21 seven-cylinder radial replacing the ASh-82 of the Yak-3U. It used the same all-metal wings as the Yak-3U, with a fuselage of mixed metal and wood construction. Pilot and observer sat in tandem under a long canopy with separate sliding hoods. A single synchronised UBS 12.7 mm machine gun and wing racks for two 100 kg (220 lb) bombs comprised the aircraft's armament.