Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PA20397 2111 REV 3 ITEM 03 found under Heating Element Electrical Nonim by Alstom Power Conversion Usa Inc. The National Stock Number assigned to this part is 4520015493489, 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 PA20397 2111 REV 3 ITEM 03.