If you've ever noticed a little exhaust hole at the rear of a large passenger plane and wondered what it was, that's the location of the plane's APU, or auxiliary power unit. The APU is found on ...

It's called the auxiliary power unit, and it's the smallest engine on the plane. But that doesn't mean it serves a small purpose. It provides the necessary power to start the plane's engines and ...

Delta is the first U.S. airline to achieve its near-term (2025) fuel savings goal from operational improvements, the company ...

If you have ever sat in a flight, you might have noticed that the AC is often switched off at the time of take-off. Know why ...

Get an exclusive look at TRANSTEX’s new DClimate Lithium Pro™ electric auxiliary power unit. Designed for maximum runtime, lower emissions, and the lowest total cost of ownership, this lithium ...

Delta Air Lines achieved a one percent fuel burn savings in early 2025, saving 45 million gallons of jet fuel through ...

Ground support equipment plays a crucial role in aviation operations by ensuring aircraft functionality during non-flight periods. Without proper ground support infrastructure, aircraft cannot safely ...

Its on-board Auxiliary Power Unit provides engine-starting capability and ground power self-sufficiency in remote areas. Originally derived from the E-2C Hawkeye and first fielded in 1965 ...

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.