Despite the crash landing at Heathrow a few days ago aviation experts still regard the Boeing 777 as one of the world’s safest jets. There are currently 667 of the jets in service carrying millions of passengers every year. To date there has only been one fatality involving a 777, in September 2001. This was caused by a hose leading to the aircraft becoming detached and an aircraft refueller being engulfed in flames. It is still not clear what caused the most recent incident.