Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2213D0079 found under Microphone Crystal by L 3 Chesapeake Sciences Corporation. The National Stock Number assigned to this part is 5965015439997, 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 2213D0079.