( CNN ) -- Pilots were warned of potential danger at least eight times in about 30 seconds before a Polish jet crashed in Russia in April , killing President Lech Kaczynski and about 100 others . A transcript that the Polish government released Tuesday shows that an automated warning system sounded the alarm several times before the Tupolev-154 crashed in western Russia . `` Pull up . Pull up , '' a warning system advised pilots . `` Terrain ahead . Terrain ahead . '' The April 10 crash killed Kaczynski , his wife , top Polish military officials , the head of Poland 's national bank and other dignitaries . The president had been traveling with a Polish delegation to Russia for the 70th anniversary of the massacre of Polish prisoners of war in the village of Katyn . Some 20,000 Polish officers were executed there during World War II .
Transcript of pilots warned of fire several times in seconds before impact . April 10 crash killed Polish President Lech Kaczynski and about 100 others . Delegation headed to Warsaw for 70th anniversary of death of Polish prisoners of war in World War II .