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 () of Air Base No. 6 (BA6). In 1978 another reorganization in the Air Force lead to the renaming of the 301 Operational Group () to 301 Operational Group, with the new formed 111 Squadron – dedicated to Aviocar and Alouette III training – and 552 Squadron, and the 61 Operational Group (, GO61), with the 551 Squadron (Alouette III) and 751 Squadron (Sud Aviation Puma).
