The Boeing 777X is nearing its entry into service following a long-delayed development and certification journey. The long-haul widebody will become the world’s longest commercial aircraft when it starts flying, posing a significant challenge to other widebody aircraft in service today. The 777X was launched to offer airlines a high-capacity, long-range replacement or addition to their long-haul fleets, replacing older 777 models and other large aircraft, like the 747 and A380.