Emirates Flight 407, tailstrike because of too little thrust on takeoff. KLM Flight 4805, severe tailstrike while attempting to avoid collision in the Tenerife airport disaster.[6] Japan Airlines Flight 123, improper repairs to an earlier tailstrike on landing, resulting, seven years later, in catastrophic structural failure and 520 fatalities - the deadliest single-aircraft accident in aviation history.[7] China Airlines Flight 611, improper repairs to a tailstrike on landing, resulting in catastrophic failure twenty-two years later. Middle East Airlines Flight 304, tailstrike on landing at Cairo International Airport.