Eastern Airlines Technic (EASTEC), a subsidiary of China Eastern Airlines, has signed a twelve-year exclusive maintenance ...

Depending on the plane's position, cabin air is supplied from three primary sources: the auxiliary power unit (APU), the engine(s), or a ground air source. Ground air, also known as pre ...

Verdict: False The claim is baseless. It actually shows the result of an auxiliary power unit (APU) fire. Fact Check: Japan ...

But there's another engine hidden int he back of the tail. Called the auxiliary power unit (APU) It's the smallest engine on a plane. But you could say it's the most important one of all.

Alex Derber, a UK-based aviation journalist, is editor of the Engine Yearbook and a contributor to Aviation Week and Inside ...