 The captain was an unnamed 49-year-old male who had logged a total of 10,410 flight hours, including 3,205 hours on the Boeing 777.The first officer was an unnamed 41-year-old male who had 5,788 hours with 2,531 of them on the Boeing 777.As the aircraft was taking off from Runway 34R at Tokyo Haneda, the pilots heard a loud bang coming from the left.