Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AE5 4.21 13A 6A 1400SER found under Gear Assembly Speed Decreaser by Rotork Controls Ltd. The National Stock Number assigned to this part is 3010014525277, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AE5 4.21 13A 6A 1400SER.