Dragutin Karlo Novak (Zagreb, February 16, 1892 - Zagreb, October 31, 1978), was first person in Croatia to make a heavier-than-air flight. He flew a plane constructed by Slavoljub Eduard Penkala, June 22, 1910. Novak flew in an airplane made by constructor Slavoljub Penkala from the military training-field in Črnomerec, Zagreb. Later, during one of Novak's flying achievements, on 20 October 1910, the airplane was damaged and Penkala gave up aircraft design.