Sikorsky S-61 disaster. British Airways Helicopters' commercial Sikorsky S-61 helicopter Oscar November (G-BEON) crashed in the southern Celtic Sea, in the Atlantic Ocean, when en route from Penzance to the St Mary's, Isles of Scilly in thick fog. Only six of the 26 on board survived. July 16, 1983.
A Canadian Helicopters Sikorsky S-61L at CFB Cold Lake in 1992.
Ditched helicopter - 1983 British Airways Sikorsky S-61 crash - By Morrispeter - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=11526128
Los Angeles Airways Sikorsky S-61L
1988 ♦ July 13 – The 1988 British International Helicopters Sikorsky S-61N crash: a Sikorsky S-61 ditches in the North Sea due to an engine fire; all 21 on board survive.
https://flic.kr/p/PecXEV | M23-01, Sikorsky S-61 Malaysia Army @ Langkawi LGK LIMA2015
Sikorsky CH-3E "Jolly Green Giant". The CH-3E is the US Air Force version of the Sikorsky S-61 amphibious transport helicopter developed for the US Navy. Fifty CH-3Es were modified for combat rescue missions in Vietnam with added armor, defensive armament, self-sealing fuel tanks, a rescue hoist, and in-flight refueling capability. In Vietnam they were given the nickname "Jolly green Giant" and redesignated HH-3E.
11 March 1959 First flight of the Sikorsky SH-3 Sea King helicopter #flighttest