What happens if you do not turn on the engine cowl anti-ice in icing conditions?

When operating in icing conditions, it is critical to activate the engine cowl anti-ice system to prevent ice from accumulating on the engine. Without proper activation of this system, ice can form on the engine cowl, which can lead to significant airflow disruptions and potential engine performance issues.

Ice accumulation on the engine can adversely affect the aerodynamic properties and cooling of the engine, potentially leading to increased temperatures and performance degradation. This can result in reduced thrust, causing the aircraft to have difficulty maintaining performance during critical phases of flight, especially during climb and takeoff. Therefore, activating the anti-ice system is essential for ensuring safe operation and maintaining optimal engine performance in such conditions.