Serbaud, short for Serikat Buruh Angkatan Udara ('Air Transport Workers Union'), was a trade union

Trade union

A trade union, trades union or labor union is an organization of workers that have banded together to achieve common goals such as better working conditions. The trade union, through its leadership, bargains with the employer on behalf of union members and negotiates labour contracts with...

 of air transport employees and workers Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

. Serbaud was affiliated to the trade union centre SOBSI, which was linked to the Communist Party of Indonesia

Communist Party of Indonesia

The Communist Party of Indonesia was the largest non-ruling communist party in the world prior to being crushed in 1965 and banned the following year.-Forerunners:...

. Serbaud was estimated to have less than 3,000 members.

Around 1964 Serbaud propagated boycotts against Pan Am, refusing to service Pan Am flights. Moreover, Serbaud refused to service the aircraft chartered by the U.S. embassy. In December 1964 Serbaud organised protests outside the U.S. embassy, charging it with using a 'spy plane'.

Serbaud held its third congress June 25-27, 1965.