Engine Ice Protection Flashcards
What stage of compressor air is used for engine inlet lip anti-ice?
11th stage air is used to heat the engine inlet lip for anti-icing.
What type of valve is used for engine anti-ice?
A butterfly shut-off valve is used for engine anti-ice control.
How is the engine anti-ice valve operated and controlled?
Electrically solenoid-controlled, pneumatically operated using 11th stage air
What is the fail-safe position of the engine anti-ice valve?
The valve fails open, meaning if power or pneumatic pressure is lost, the valve will default to the open position for safety.
What indication appears when the engine anti-ice valve is open?
The SDAC (System Data Acquisition Concentrator) generates a green “ENG A ICE” memo message on the display when the valve is open.
Which system monitors the engine anti-ice system?
The Zone Controller monitors the engine anti-ice system.
How does the Zone Controller interact with FADEC regarding engine anti-ice?
The Zone Controller sends a bleed demand signal to the FADEC (Full Authority Digital Engine Control) when anti-ice is required.
