DUBAI, United Arab Emirates — Long-haul carrier Emirates successfully flew a Boeing 777 on a test flight Monday with one of its two engines entirely powered by so-called sustainable aviation fuel.

DUBAI, United Arab Emirates — Long-haul carrier Emirates successfully flew a Boeing 777 on a test flight Monday with one of its two engines entirely powered by so-called sustainable aviation fuel.

Long-haul carrier Emirates successfully flew a Boeing 777 on a test flight Monday with one of its two engines entirely powered by so-called sustainable aviation fuel. This comes as carriers ...