First controlled VTOL flight (Pescara Helicopter 1S)
Tuesday, May 31, 1921
- Issy-les-Moulineaux, France 
This is a Momentous Operational milestone.
Description:
The first time that a manned VTOL aircraft was able to lift and perform any level of controlled flight without external assistance.
Note: This milestone is in work and should not be taken as definitive.
