Race for the Yankee Zephyr (1981)

Finding it after four decades is quite a challenge…. but holding onto it is really an adventure!

In a lake high in the mountains of New Zealand hunter Gibbie Gibson discovers a plane wreck from WW2. When he tells it around, a gang of crooks follows and threatens him and his daughter, because they know there are 50 million dollars in the wreck. Helicopter pilot Barney helps Gibbie against them, risking his life thereby.