Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number QPC447 found under Loudspeaker Microph by L3 Communications Corp. The National Stock Number assigned to this part is 5965013640829, and the Federal Supply Class is 5965 Headsets Handsets Microphones And Speakers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like QPC447.