APU

Auxiliary Power Unit (APU)
Auxiliary Power Unit-APU - A self-contained generator in an aircraft producing power for ground operation and for starting the engines.
Related Definitions from Aviation Glossary ...

APU: auxiliary power unit (normally used during engine start).
ASI: airspeed indicator.
ATC: Air Traffic Control.

APU - Auxiliary power unit. Usually small engine carried on board an aircraft to provide an independent power source for such services as electrics, hydraulics, pneumatics, ventilation, and air conditioning, ...

APU
Auxiliary Power Unit - Turbine powered source of electrical generation, cabin heating/cooling and hydraulic pressure commonly used by aircraft on the ground. Can serve as a back-up provider of the above if main engines are not capable of doing so.

APU
Auxiliary power unit
ARCID
Aircraft Identification
AREA
The number of square inches (or feet) of the wing. It`s the wingspan multiplied by the wing`s chord. The area of a tapered wing is the wingspan multip...

APU - Auxiliary power unit
ARINC - Aeronautical Radio, Inc. A nonprofit corporation owned by member airlines to define form, fit and function of avionics equipment and to provide radio communication services.

Powerplant instruments provide information about the the status of the aircraft's engines and APU. Systems instruments provide information about the aircraft's other systems, such as fuel delivery, electrical, and pressurization.

APU - Auxiliary Power Unit
ARCAL - Aircraft Radio Control of Aerodrome Lighting
ARINC - Aeronautical Radio Inc.
ARTCC - Air Route Traffic Control Centre (USA)
ASDE - Airport Surface Detection Equipment
ASR - Airport Surveillance Radar ...

APU - Auxiliary Power Unit - a small jet engine in larger aircraft that provides power whilst the aircraft is on the ground, plus power to restart an engine in flight
ARM - Anti-Radiation Missile
ASM - Air-to-Surface Missile ...

APU: Auxiliary Power Unit. Device (usually a small turbine) that provides power for engine-starting and other systems while on the ground. Such device is present on large aircraft and some business jets, and replaces the GPU.

See also: Flight, Aircraft, Power, Aviation, Navigation