How is the Windshield heat typically activated?

The correct answer indicates that the windshield heat is typically activated after two engines are started. This is a procedural aspect of aircraft operation that relates to ensuring safety and functionality during flight.

When the engines are operating, the electrical systems are more stable and are often designed to ensure that critical systems, such as windshield heating, have adequate power. This practice allows the airplane’s systems to maintain optimal performance and ensures that ice buildup on the windshield, which can obstruct visibility, is managed effectively.

The activation of windshield heat at this point also aligns with standard operating procedures for many aircraft, where systems are sequentially brought online in a way that maximizes safety and efficiency. Waiting until two engines are running means that sufficient electrical power is available to support not just the windshield heating but other essential systems on board as well.

In contrast, options that suggest manual activation, automatic activation at takeoff, or activation based solely on temperature conditions might not consider the operational norms and power management strategies that underpin safe aircraft operation, which is why they do not represent the typical activation method.