What must be done before applying electrical power during exterior inspection?

• A. Prop clear prior to electrical power
• B. Check fuel level
• C. Inspect tail surface
• D. Secure canopy

Answer: (A)

The safety priority here is making sure the propeller arc is clear before you apply electrical power. If power is applied with someone in the prop arc or with loose tools or clothing nearby, the engine or starter could cause the prop to spin unexpectedly, leading to serious injury or damage. So, you visually check the area around the prop, clear the deck of people and objects, and confirm no one is in the danger zone before energizing the electrical system.

The other tasks you might perform during a walk-around—checking fuel level, inspecting the tail surface, or securing the canopy—are important for overall exterior inspection, but they don’t address the immediate risk that arises when power is applied and the prop could move.