He was the debate chief of Luis Carlos Galán , during Galan 's 1989 presidential campaign , which was cut short by Galan 's assassination . After this tragedy , Gaviria was proclaimed as Galan 's political successor . This campaign was the target of attacks by Pablo Escobar ; Gaviria was to take Avianca Flight 203 , bound for Cali . For security reasons he did not board the flight . The plane , with 107 people aboard , exploded , killing everyone on board
Avianca Flight 203
Avianca Flight 203
César Gaviria