The CH-47D is a twin-engine, tandem rotor heavy-lift helicopter used primarily by the United States Army. It is designed to transport troops, supplies, and equipment in various environments, making it a versatile asset in military operations. The helicopter can carry up to 55 troops or 24,000 pounds of cargo, and its unique rotor system allows for improved stability and maneuverability. This model is an upgraded version of the original CH-47 Chinook, featuring advanced avionics and improved performance capabilities. The CH-47D has been deployed in numerous conflicts, including Operation Desert Storm and Operation Enduring Freedom, showcasing its reliability and effectiveness in challenging conditions.