Bréguet 941 S-01 forced to perform a low altitude show (AdlA). (1)

The wings were entirely blown by the four large diameter propellers which all were ever synchronised due to their complete link by rigid inter-transmission shafts. How many people outside the aircraft or seating as observer in the right seat for a demonstration tour were completely astonished to see all the four propellers alive as so as the first Turmo engine was started!!!