B773, Tokyo Haneda Japan, 2016

B773, Tokyo Haneda Japan, 2016

Summary

On 27 May 2016, a Boeing 777-300 crew made a high speed rejected take off when departing from Tokyo after a number one engine failure warning was quickly followed by a fire warning for the same engine and ATC advice of fire visible. As the fire warning continued with the aircraft stopped, an emergency evacuation was ordered. The Investigation found that the engine failure and fire had occurred when the 1st stage disc of the High Pressure Turbine had suddenly failed as result of undetected fatigue cracking which had propagated from an undetected disc manufacturing fault.

Description

On 27 May 2016, the crew of a PW4090-engined Boeing 777-300 (HL7534) being operated by Korean Air Lines on a scheduled international passenger flight from Tokyo Haneda to Seoul as HL 2708 rejected takeoff on runway 34R because of a left engine fire warning and an emergency evacuation followed. Of the 319 occupants, 40 sustained minor injuries during the evacuation. Debris was ejected from the failed engine but none of it penetrated the fuselage.

Investigation

An Investigation was carried out by the Japan Transport Safety Board (JTSB). Relevant data was recovered from the FDR, the 2 hour CVR and the QAR and useful airport video footage was also available.

It was noted that the 49 year-old Captain had accumulated 10,410 total flying hours which included 3205 hours on type and that the 41 year-old First Officer, who had been designated as PF for the takeoff, had accumulated 5788 total flying hours which included 2531 hours on type.

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