Which system supplies bleed air for cabin pressurization and wing anti-icing in many aircraft?

Which system supplies bleed air for cabin pressurization and wing anti-icing in many aircraft?

• A. Landing Gear System
• B. Fuel System
• C. Powerplant
• D. Ice Protection System

Answer: (C)

Bleed air comes from the engine compressor stages and is used to run the environmental control system for cabin pressurization and to feed wing anti-icing systems. The powerplant is the source of this bleed air, supplying the hot compressed air either from the engines themselves or, when engines aren’t running, from the APU on the ground or during start-up. The other systems listed don’t provide this bleed air: the landing gear system is for retraction and extension, the fuel system handles fuel, and the Ice Protection System is what uses the bleed air (or other methods) to prevent ice, not the source of it.

Bleed air comes from the engine compressor stages and is used to run the environmental control system for cabin pressurization and to feed wing anti-icing systems. The powerplant is the source of this bleed air, supplying the hot compressed air either from the engines themselves or, when engines aren’t running, from the APU on the ground or during start-up. The other systems listed don’t provide this bleed air: the landing gear system is for retraction and extension, the fuel system handles fuel, and the Ice Protection System is what uses the bleed air (or other methods) to prevent ice, not the source of it.