Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MX-2509 AIC found under Cushion Ear by Joint Electronics Type Designation. The National Stock Number assigned to this part is 5965007156158, 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 MX-2509 AIC.