Which helicopter is categorized as a heavy-lift aircraft?

The Chinook HC6 is categorized as a heavy-lift aircraft due to its design and capabilities that enable it to transport large loads over considerable distances in various environments. This helicopter is characterized by its tandem rotor system which provides exceptional lifting power, allowing it to carry heavy cargo, personnel, and equipment. The Chinook is notably utilized for logistical operations, troop transport, and humanitarian missions where significant payload capacities are required.

In contrast, the Puma HC2 is classified as a medium-lift helicopter, suitable for tactical transport under battlefield conditions but does not possess the extensive cargo capacity of the Chinook. The Texan T1 and Hawk T2 are both primarily used for training purposes; they are light aircraft focused on aircrew training rather than heavy lifting or cargo transport. Their design and operational roles are not intended for the heavy-lift capabilities that define the Chinook HC6.