First flight of the Kamov Ka-22 Vintokryl
Saturday, August 15, 1959
- Kamov Design Bureau, Russia 
This is a Notable Operational milestone.
Description:
The Ka-22 Vintokryl ('Screw Wing') was a large twin-turboshaft powered gyrodyne. This was an untethered hover. The aircraft had carrried out a tethered hover on Jun 17, 1959.
Source: G.I. Kuznetsov. OKB N.I.Kamova. Published by Kamov, 1999. Page 371. Print.
