Amphibious helicopter The HUP-2 was able to taxi forward or backward on water, regardless of wind direction. The CH-46 Sea Knight and its Canadian variant, the CH-113 Labrador, can land on water and rest for up to two hours in calm water. The rear sponsons hold two of the three landing gear units as well as self-sealing fuel tanks. The helicopter began service with the United States Marine Corps in 1962, and with the Canadian military in 1963, and is used to carry cargo and combat troops. The Boeing CH-47 Chinook was made sufficiently watertight to allow it to land on water
San Francisco and Oakland Helicopter Airlines San Francisco and Oakland Helicopter Airlines San Francisco and Oakland Helicopter Airlines (also known as SFO Helicopter Airlines and SFO Helicopter) was a helicopter airline service offering scheduled passenger flights between San Francisco, Oakland, and other Bay Area cities. It was founded in 1961 but disappeared from the Official Airline Guide 15 years later before finally going out of business in 1986. San Francisco and Oakland Helicopter Airlines was one of the first helicopter airlines to operate without a federal subsidy and it was also the first to operate with only turbine engine helicopters. Since helicopter landing sites were scarce