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After reporting contact with an unidentified aircraft, Australian pilot Frederick Valentich disappeared while piloting a Cessna 182L across the Bass Strait to King Island.

Historical image related to After reporting contact with an unidentified aircraft, Australian pilot Frederick Valentich disappeared while piloting a Cessna 182L across the Bass Strait to King Island. from October 21, 1978

Disappearance of Frederick Valentich

1978 disappearance of a pilot over Bass Strait, Australia

Frederick Valentich was an Australian pilot who disappeared while on a 125-nautical-mile (232 km) flight in a Cessna 182L light aircraft, registered VH-DSJ, over Bass Strait. On the evening of Saturday 21 October 1978, twenty-year-old Valentich informed Melbourne air traffic…
Source: Wikipedia (CC BY-SA)

Cessna 182 Skylane

American light aircraft

The Cessna 182 Skylane is an American four-seat, single-engined light airplane built by Cessna of Wichita, Kansas. It has the option of adding two child seats in the baggage area.
Source: Wikipedia (CC BY-SA)

Bass Strait

Sea strait between the Australian mainland and Tasmania

Bass Strait is a strait separating the island state of Tasmania from the Australian mainland. The strait provides the most direct waterway between the Great Australian Bight and the Tasman Sea, and is also the only maritime route into the economically prominent Port Phillip Bay.
Source: Wikipedia (CC BY-SA)

King Island (Tasmania)

Island in the Bass Strait

King Island is an island in Bass Strait, belonging to the Australian state of Tasmania. It is the largest of four islands known as the New Year Group and the second-largest island in Bass Strait. The island's population at the 2021 census was 1,617 people, up from 1,585 in 2016.…
Source: Wikipedia (CC BY-SA)