Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 70072-15001 found under Repair Kit Rotary W by Sikorsky Aircraft Corporation. The National Stock Number assigned to this part is 1615012690255, and the Federal Supply Class is 1615 Helicopter Rotor Blades Drive Mechanisms And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 70072-15001.