What does the acronym GPU stand for in aviation?

The acronym GPU in aviation stands for Ground Power Unit. This equipment is vital for providing electrical power to an aircraft while it is parked on the ground, allowing it to operate systems such as lighting, air conditioning, and avionics without needing the aircraft's engines to be running. The GPU is especially important during maintenance or when the aircraft is on the ground for an extended period, ensuring that all necessary electrical functions can continue without relying on onboard power sources.

Understanding the role of a Ground Power Unit is crucial, as it supports not only ground crew operations but also enhances passenger and crew comfort by maintaining essential systems without engine operation. This capability leads to fuel savings and reduces the environmental impact of ground operations.