High Quality Content by WIKIPEDIA articles! The Yakovlev Yak-30 (NATO reporting name Magnum) was Yakovlev`s entry in a competition for the first military jet trainer aircraft designed for Warsaw Pact nations. Designed to succeed the Yak-17UTI, it also led to the development of the Yakolev Yak-32 sport jet. The Yak-30 lost to the L-29 Delfin, and neither it or the Yak-32 entered production.