11 (Portuguese: Base Aérea Nº 11, BA11), at Beja, and operates the AgustaWestland AW119 in transport and helicopter instruction roles.

[3] It has the primary mission of executing tactical air transport operations and the secondary missions of providing basic and complementary flying training in helicopters, providing combat air support, executing general air transport operations and executing search and rescue operations.

[4][6] After the Carnation Revolution a major reorganization occurred in the Portuguese Armed Forces with many helicopters squadrons returning from the oversea colonies and being assigned to 33 Squadron based at Air Base No.

3 (BA3) and to the Helicopter Group (Portuguese: Grupo de Helicópteros) of Air Base No.

In 1982, the Rotores de Portugal helicopter flight demonstration team was reactivated in 552 Sqn.