Bell YH-40 Olive Drab US Army The Sperry inspection cars travel

The Sperry inspection cars travel over railroad tracks at slow speed

The Army used the TF-10B for Army Air Defense training — specifically to familiarize Army air defense personnel with the radar signatures

and performed countless other essential missions

meeting with shippers

under Project Silverplate

Bell YH-40 Olive Drab US Army The Sperry inspection cars travelThese are 1 72 scale decals for the Bell YH 40, the pre production service test variant of the helicopter that would become the legendary UH 1 Iroquois in olive drab. While the earliest YH 40s wore natural metal finishes, later service test airframes transitioned to the olive drab scheme that would become standard across the Army's Iroquois fleet. This finish represents the YH 40 in a more operationally representative configuration, as the Army