Would that be the same documentary as "Chopper: What Goes Up"? I have volume 3 of this series on like-new VHS. It's also called "The Chopper" on the back cover and just "Chopper" on the actual tape. From the back cover:
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Chopper is a compelling production on the history of the helicopter and how it has become an essential part of our aviation history and future. Made for television - in 13 episodes - The Chopper series uses historical footage and interviews with historians, servicemen and military experts to show the history of the Helicopter from its original concepts to the strike weapon it is today.
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Chapters (vol. 3): The Turbulent Fifties, Full Metal Gunship and Riders in the Sky.
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Running time: 60 minutes.
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Silver Trak Audio Video
Catalog No. SB 2015
Cover design by Nicki Powell
I tried chasing up the video label and production company but they don't seem to be operating anymore.
It has some incredible footage and a lot of information, would really like to obtain the other volumes one day.
If anyone can help, I'd be eternally greatful!