GE T64 turboshaft family, a long-running military propulsion line used in the Sikorsky CH-53E Super Stallion, MH-53E Sea Dragon, and other helicopter and fixed-wing applications. GE's official data covers T64-100, T64-416A, T64-419, and T64/P4D turboshaft configurations plus T64 turboprop derivatives, with helicopter ratings from roughly 3,133 to 3,400 shaft horsepower and higher turboprop power classes. GE continues to supply parts, components, reliability improvements, and logistics support for U.S. Marine Corps and Navy H-53 fleets; exact model variants and vehicle installations remain separate records.