<a href="https://en.wikipedia.org/wiki/Tenerife_airport_disaster" id="mw6w" rel="mw:WikiLink" title="Tenerife airport disaster">Tenerife airport disaster</a>: Two <a href="https://en.wikipedia.org/wiki/Boeing_747" id="mw7A" rel="mw:WikiLink" title="Boeing 747">Boeing 747</a> <a href="https://en.wikipedia.org/wiki/Airliner" id="mw7Q" rel="mw:WikiLink" title="Airliner">airliners</a> collide on a foggy runway on <a href="https://en.wikipedia.org/wiki/Tenerife" id="mw7g" rel="mw:WikiLink" title="Tenerife">Tenerife</a> in the <a href="https://en.wikipedia.org/wiki/Canary_Islands" id="mw7w" rel="mw:WikiLink" title="Canary Islands">Canary Islands</a>, killing 583 (all 248 on <a href="https://en.wikipedia.org/wiki/KLM" id="mw8A" rel="mw:WikiLink" title="KLM">KLM</a> and 335 on <a href="https://en.wikipedia.org/wiki/Pan_Am" id="mw8Q" rel="mw:WikiLink" title="Pan Am">Pan Am</a>). Sixty-one survived on the Pan Am flight. This is the deadliest aviation accident in history.