Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5811863-37 REV D found under Cover Assy Seat Pan by Weckworth Manufacturing Inc. The National Stock Number assigned to this part is 1660007199723, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 5811863-37 REV D.