[2] However, it was badly damaged in a low-speed crash on August 24, 1973 due to unexpected rotor forces and insufficient control systems.

In 1982 it was proposed that the XH-59A be converted to the XH-59B configuration with advanced rotors, new powerplants (two GE T700s), and a ducted pusher propeller at the tail.

[10][11] This system did not require a wing to be fitted for high speeds and to improve maneuverability,[5] and also eliminated the need for an anti-torque rotor at the tail.

With jets installed, it lacked power to hover out of ground effect and used short take-off and landing for safety reasons.

[5] Airframe 73-21941 is in storage at the NASA Ames Research Center[13] and 73-21942 is on display at the Army Aviation Museum, Fort Rucker, Alabama.