Please fill out the form below for S Acer Tail Rotor D and get a quote for part number S1635-63325 by Sikorsky Aircraft Corp with NSN 1615003044622 and FSC Name is 1615 Helicopter Rotor Blades Drive Mechanisms and Components, please include required quantity along with expected turn around time. Our knowledgeable account manager will reply you shortly. Also check for the related parts for part number S1635-63325. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.