Treasure of the Yankee Zephyr movie (1981) - Race for the Yankee Zephyr

Treasure of the Yankee Zephyr movie (1981) aka Race for the Yankee Zephyr - Plot synopsis: A drunken deer hunter, his pilot colleague and his daughter compete with a villainous treasure hunter to reach a lake nestled among the mountains of New Zealand, where a WWII-era plane wreck carrying a fortune in gold is submerged.
Director: David Hemmings
Writer: Everett De Roche
Stars: Ken Wahl, Lesley Ann Warren, Donald Pleasence