[4] He was consequently one of the most important cadres involved in agitprop,[5] but, like his fellow activists Ion Popescu-Puțuri, Alexandru Iliescu, and Grigore Răceanu, appears to have been occasionally critical of guidelines imposed on the PCR by the Soviet Union and the Comintern.

[6] A contributor to the PCR's illegal newspaper România Liberă, he was interned with other opponents of the Ion Antonescu dictatorship the Târgu Jiu camp for the larger part of World War II.

)[7] As editor in chief of România Liberă between late 1944 and 1946[9] and press officer in the Propaganda Ministry (after 1945),[2] he frequently attacked the opposition to the PCR-backed Petru Groza cabinet, and wrote against the National Peasants' Party in particular.

A member of the PMR delegation to the 40th anniversary of the October Revolution in Moscow (alongside Gheorghiu-Dej, Chivu Stoica, Alexandru Moghioroș, Ștefan Voitec, Ceaușescu, and Răutu), Preoteasa died at Vnukovo International Airport, minutes after their Aeroflot Ilyushin Il-14 aircraft missed the landing field and caught fire.

[16] According to witnesses, Preoteasa was the only person standing at the time, telling others that he was glad not to have been asked to wear a seat belt; when control of the airplane was lost, he remarked, probably in jest, "This was not in the schedule", which were to be his last words.