APU has various meanings in the Aviation category. Discover the full forms, definitions, and usage contexts of APU in Aviation.
A small jet engine used to generate electrical power for air conditioning, cabin lighting and engine start up, when the aircraft is parked on the ground.\n\nAbbreviation - APU
AviationAn auxiliary power unit is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft and naval ships as well as some large land vehicles.
AviationLast updated: