This article is a list of accidents and incidents involving helicopters and which are notable enough to have an article on Wikipedia. It is grouped by the years in which the accidents and incidents occurred. 1968 22 May – Sikorsky S-61L N303Y, operating Los Angeles Airways Flight 841, suffers a mechanical failure in flight which allows the rotor blades to collide with the aircraft's fuselage. It crashes at Paramount, California, killing all 23 people on board. 14 August – Sikorsky S-61L N300Y, operating Los Angeles Airways Flight 417, loses a rotor blade in flight and crashes at Compton, California. All 21 people on board are killed. 1975 17 January – Sikorsky S-55B helicopter [[1975 Kjalarnes helicopter crash|crashes]] in Iceland while en route from Reykjavík Airport to Snæfellsnes. 1977 10 May – A Sikorsky CH-53 Yas'ur of the Israeli Air Force crashes in the Jordan Valley. All 54 people on board are killed. 1978 21 June – Two Boeing CH-47 Chinooks of the Imperial Iranian Air Force are shot down by the Soviet Air Defence Forces after straying into Turkmen Soviet Socialist Republic airspace. One aircraft is destroyed with the loss of eight lives. The other is damaged; it is later repaired with permission from Soviet authorities and returns to Iran. 26 June – Sikorsky S-61 LN-OQS of Helikopter Service loses a rotor blade in flight and crashes into the North Sea off Bergen, Norway. All eighteen people on board are killed. 1981 13 August – Westland Wessex G-ASWI of Bristow Helicopters suffers an engine failure and ditches in the North Sea off the coast of Norfolk, United Kingdom. All thirteen people on board are killed. 1982 23 July – Bell UH-1 Iroquois N87701 of Western Helicopters is damaged by pyrotechnic explosions while a scene for Twilight Zone: The Movie is being filmed at Indian Dunes, California. Actor Vic Morrow and two child actors are killed on the ground. 14 September – Bell 212 G-BDIL owned by Bristow Helicopters crashes while on a nighttime search and rescue mission in the North Sea, killing all six crew members on board. 1983 16 July – Sikorsky S-61 G-BEON of British Airways crashes into the Atlantic Ocean between the coast of Cornwall and the Isles of Scilly. Twenty of the 26 people on board are killed. 1986 18 June – Bell 206 N6TC of Helitech collides with Grand Canyon Airlines Flight 6 in mid-air