Can the engine anti-ice system operate on the ground? (repeated concept for assessment)

Can the engine anti-ice system operate on the ground? (repeated concept for assessment)

• A. Yes
• B. No
• C. Only during flight
• D. Only during takeoff

Answer: (A)

Engine anti-ice is wired to heat the engine nacelle and inlet using bleed air, and it is designed to be active both in flight and on the ground. When you select it and bleed air is available (from an operating engine or from the APU on the ground), heat is diverted to the nacelle to prevent ice buildup even while the aircraft is on the ground or taxiing. This protection is important because ice inlets can form in freezing conditions and, if not managed, ice can shed or affect engine start and performance. So, the system can operate on the ground whenever icing conditions exist and the bleed-air source is available.

Engine anti-ice is wired to heat the engine nacelle and inlet using bleed air, and it is designed to be active both in flight and on the ground. When you select it and bleed air is available (from an operating engine or from the APU on the ground), heat is diverted to the nacelle to prevent ice buildup even while the aircraft is on the ground or taxiing. This protection is important because ice inlets can form in freezing conditions and, if not managed, ice can shed or affect engine start and performance. So, the system can operate on the ground whenever icing conditions exist and the bleed-air source is available.