____ and _____ components are labeled conventionally, No. 1 for the left side and No. 2 for the right side.

____ and _____ components are labeled conventionally, No. 1 for the left side and No. 2 for the right side.

• A. AIRFRAME and AVIONICS
• B. CABIN and STRUCTURE
• C. STRUCTURE and FUEL
• D. ELECTRICAL and HYDRAULIC

Answer: (A)

The idea being tested is a standard maintenance labeling scheme that divides components by the helicopter’s sides, with No. 1 assigned to the left side and No. 2 to the right side. In this convention, the left side components are the airframe—structural and mechanical parts that form the helicopter’s chassis—while the right side components are the avionics—electrical and electronic systems such as navigation and communication gear. This separation helps technicians quickly locate and service parts, and it matches how harnesses and access paths are laid out in the aircraft. So, pairing airframe with avionics fits the left-right labeling rule: airframe components are designated No. 1 on the left, and avionics components are designated No. 2 on the right. Other pairings don’t align with this side-by-side organizational scheme.

The idea being tested is a standard maintenance labeling scheme that divides components by the helicopter’s sides, with No. 1 assigned to the left side and No. 2 to the right side. In this convention, the left side components are the airframe—structural and mechanical parts that form the helicopter’s chassis—while the right side components are the avionics—electrical and electronic systems such as navigation and communication gear. This separation helps technicians quickly locate and service parts, and it matches how harnesses and access paths are laid out in the aircraft.

So, pairing airframe with avionics fits the left-right labeling rule: airframe components are designated No. 1 on the left, and avionics components are designated No. 2 on the right. Other pairings don’t align with this side-by-side organizational scheme.