<a class="mw-redirect" href="https://en.wikipedia.org/wiki/1983_British_Airways_Sikorsky_S-61_crash" id="mwATk" rel="mw:WikiLink" title="1983 British Airways Sikorsky S-61 crash">Sikorsky S-61 disaster</a>: A helicopter crashes off the <a href="https://en.wikipedia.org/wiki/Isles_of_Scilly" id="mwATo" rel="mw:WikiLink" title="Isles of Scilly">Isles of Scilly</a>, causing 20 fatalities.