Question 4525 Deck General

The correct answer is C) rotor blades and landing gear. An obstruction on a helodeck (helipad) refers to any object that could potentially interfere with the safe operation of a helicopter, particularly the rotation of the rotor blades and the landing/takeoff of the aircraft. Obstructions near the helodeck pose a risk of collision or damage to the helicopter's critical components, which is a significant safety concern. The other answer choices, such as pilot visibility, cargo loading, or passenger unloading, while important considerations, are not the primary focus when it comes to defining an obstruction on a helodeck.