- November 2014 - WK031 - Master Override selected to get aircraft down on first approach ahead of approaching thunderstorm. Aircraft thought it had landed when it hadn't, so gave down elevator command. Dived into ground as a result. WK031 accident description
- November 2015 WK006 - Master Override selected to get aircraft down after two failed automated landing attempts. Aircraft dived into runway at 35° nose down. WK006 Accident description
- 3 February 2017 - WK042 - Lost whilst testing de-icing equipment.
- 24 March 2017 - WK043 - Training flight WK043 & WK043 Accident description
It appears that in an effort to achieve a system with operators rather than pilots, the ability to do a fully manual landing has been designed out. This leaves a system dependent on the automated system sensors always working properly; which they don't.
Lettting the manufacturer provide 'surveillance by the hour' is the way to go, rather than letting a succession of two-year tourists tell the experts how to design a UAV for a soldier to operate.
The Israelis will get it right if you just let them get on with it, in the knowledge that crashes will come out of their pocket and not yours.