1990 Royal Easter Show in Sydney, apparently. The YouTube page says the following:
"One of the best helicopter flying shows I have ever witnessed, amazing pilot skills and a real element of risk.
Back in 1990 free entertainment was very different to today. The context of this video asks the audience to consider yesterdays entertainment and compare it to today. Will we ever see helicopter flying like this again?
From the video soundtrack I can hear the man on the ground is Major Steve Graham, hopefully the pilot of Snoopy will be revealed in time and where Snoopy is today. If you know anything about this show please leave a comment. It featured as a part of the 1990 Royal Easter Show in Sydney Australia, the entertainment in the main arena was considered free entertainment.
I did receive this mail from tuber PilotDave02 related to Snoopy.
The original Snoopy pilot was Major Ross Rundell. Or Rossco Rundell. Chief instructor at Oakey Aviation abase. His first display was totally made up as he went along."
Anyone know any more?