Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S1620-61979-004 found under Guide Sliding Door Cabin by Rotair Industries Inc. The National Stock Number assigned to this part is 1560006080704, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S1620-61979-004.