Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GFC194PC56 found under Glass Liquid Sight Indicator Fla by G And G Hydraulics Corporation. The National Stock Number assigned to this part is 6680010109742, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GFC194PC56.