Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number STYLE 89 (28 REGULAR found under Trouser Flight Deck by American Power Devices Inc. The National Stock Number assigned to this part is 4210015006984, and the Federal Supply Class is 4210 Firefighting Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like STYLE 89 (28 REGULAR.