First flight of the first prototype (EDM-1) for the CH-53K Type series
Tuesday, October 27, 2015
- Sikorsky Flight Development Center, West Palm Beach, United States of America 
This is a Notable Operational milestone.
Description:
The first flight of the next generation variant of the CH-53 series of aircraft.
First flight was carried at Sikorsky's West Palm Beach development facility by aircraft EDM-1.
A description of the design and development history for the CH-53K is provided in the Wikipedia entry.
Source: Testing Kings, VERTIFLITE January/February 2016, Page 18
