EDF was contracted to design an upgrade to the existing Helicopter drive system test facility. The stand was originally capable of three different drive systems. Our goal was to increase the installation envelope size to accept various drive systems up to the CH-53, as well as to increase the torque capacity of the stand overall. Also included in the upgrades were modular test article pallets for ease of installation and turnaround time as well as a new system capable of bending the main rotor shaft during operation.