First amphibious landing by a helicopter (Vought-Sikorsky VS-300 2nd configuration))
Thursday, April 17, 1941
This is a Notable Operational milestone.
Description:
The aircraft was equipped with heavy duty outriggers.
Source: S-46/VS-300/VS-300A Helicopter, Vinny Devine, Sikorsky Archives | Sikorsky Product History, January 2013
