Which combination lists three major components typically found in a tricycle landing gear arrangement?

• A. Nose gear assembly, two main gear assemblies with struts and wheels.
• B. Nose gear assembly, two main gear assemblies with struts and wheels, and gear doors with retraction/extension actuators.
• C. Gear doors alone.
• D. Nose gear assembly only.

Answer: (B)

The main idea here is recognizing the three distinct groups that make up a tricycle landing gear: a nose gear assembly at the forward part of the fuselage, two main gear assemblies with their own struts and wheels to carry most of the load, and the gear doors with their retraction/extension actuators that enclose the gear when it's tucked away and deploy it when needed. Each part has a specific role—nose gear handles steering and supports the forward end, the main gear bears the bulk of the aircraft’s weight during ground operations and landing, and the doors and actuators manage the gear’s movement and create a smooth aerodynamic surface when retracted. The other options miss one of these essential groups, so they don’t describe the typical three-component system.