Looks fascinating, will see if I can find it on-line.

Only found clips so far:
https://www.google.com/search?client=opera&q=飛べ!+ダコタ&sourceid=opera&ie=UTF-8&oe=UTF-8#q=%E9%A3%9B%E3%81%B9!+%E3%83%80%E3%82%B3%E3%82%B F&tbm=vid

some period pics (master page)
https://ssl.alpha-prm.jp/dc3pub.com/filename49.html

Getting DC-3 and setup in Sado (pity had to chop it up for move)
https://ssl.alpha-prm.jp/dc3pub.com/filename16.html
https://ssl.alpha-prm.jp/dc3pub.com/filename63.html
https://ssl.alpha-prm.jp/dc3pub.com/filename50.html
https://ssl.alpha-prm.jp/dc3pub.com/filename51.html

Here is a 5 min clip that I think covers it well
https://www.youtube.com/watch?v=tcVhIMBEJKI