Can an EC135 do a roll or loop
With the rotor head on the 135 having no flapping hinge per say but a flexbeam that is outboard of the rotor mast I'd say it has enough authority to do a roll. It will probably create massive stress loads and not something you would want to do more than once before putting the aircraft in the scrap pile but it theory can it be done? Or does anyone have knowledge of airbus flight testing showing that it could or could not be done. This is referencing the crash in Drexel Hill PA with the EC135 and crew reports the aircraft did 2 barrel rolls while on autopilot.