What does the letter 'C' signify in the Rotary Wing aircraft category?

The letter 'C' in the Rotary Wing aircraft category signifies "Cargo." This classification is used to denote helicopters specifically designed or optimized for transporting cargo and personnel. Cargo helicopters often have larger fuselages and specialized equipment, such as hooks or internal cargo holds, enabling them to carry heavy loads efficiently. These aircraft play a crucial role in logistics, supply chain operations, and troop movement, especially in military and humanitarian missions.

In this context, the other classifications refer to different roles or capabilities of rotary-wing aircraft, such as multi-role, rescue, or attack functions, but 'C' explicitly denotes the cargo capability, highlighting its unique operational focus.