Which helicopters correspond to TDP Size 4 with a diameter of 80 meters?

The correct answer identifies helicopters that correspond to TDP Size 4 with a diameter of 80 meters. This standard typically applies to larger helicopters that require a greater area for safe landing and takeoff operations. Cargo aircraft, which can include larger helicopters and tilt-rotor aircraft like the MV/CV-22B, are designed to transport significant payloads and often necessitate a larger TDP due to their size and the operational requirements associated with handling cargo.

Cargo helicopters and versatile tilt-rotor craft operate in varied conditions and may also need additional space for alignment during landing and takeoff. This larger size for TDP ensures safety and operational efficiency, allowing for smooth vertical and horizontal movements while controlling large loads.

The other groups of helicopters listed, while capable, do not necessarily match the specifications for TDP Size 4, as they are typically smaller and have different operational parameters. Thus, the recognition of cargo and larger helicopters under TDP Size 4 reflects the operational guidelines and safety considerations relevant to helicopter landings in various environments.