Product-Improvement Test of OH-6A Rotor Blades with Increased Twist and Contour Tolerances.
ARMY AVIATION TEST BOARD FORT RUCKER ALA
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The aircraft manufacturer, working with the LOH Project Manager, presented an Engineering Change Proposal to increase the parameters of the main-rotor blade tolerances for OH-6A helicopters. On 12 August 1968 the US Army Test and Evaluation Command directed the US Army Aviation Test Board USAAVNTBD to conduct a product-improvement test of OH-6A rotor blades with increased twist and contour thickness tolerances.