On 15 July 2017, a Boeing 747-8F close to its maximum takeoff weight only became airborne just before the end of the 2,500 metre-long north runway at Narita after the reduced thrust applicable to the much longer south runway was used for the takeoff and the aircraft cleared the upwind runway threshold by only 16 feet. The Investigation found that the very experienced Captain and the very inexperienced First Officer had both failed to follow elements of the applicable takeoff performance change procedures after the departure runway anticipated during pre-start flight preparations prior to ATC clearance delivery had changed.