This is a Significant Technology milestone.
The aircraft was the Gyroplane Laboratoire (tr. Laboratory Gyroplane).
This proved that articulated blades (blades linked to the rotor hub by flapping hinges) could be used in a helicopter. The aircraft also used cyclic pitch for lateral and longitudinal control and collective pitch for lift control.
Cierva had earlier flown a gyroplane with articulated blades.
This aircraft caputured a number of world records including FAI record ID # 13059 for straight line distance of 500 m. Other records by this aircraft are detiled bt FAI Record ID # 13060, 13061, 13062 and 13084.
Source: “Breguet-Dorand Gyroplane Laboratoire”, Peter Noell, 2019 VTOL History Calendar, VFS
Source: "Pre-WWII Helicopters, The American Helicopter: An Overview of Helicopter Developments in America 1908-1999", Michael J. Hirschberg, July 2000, Page 18