Plain English Meaning

Powered by pressurized air. In a turbine engine, high-pressure air taken from inside the engine is piped around the aircraft to run things that need an air supply.

Full Definition

Relating to or operated by air or other gas under pressure. In gas turbine engines, pneumatic systems use compressed air bled from the engine compressor to power components such as engine starters, anti-ice systems, cabin pressurization, and air-driven instruments.

Context Anchor

Seen in gas turbine engine discussions when a system uses pressurized air for such as starting the engine or moving air-operated parts.