Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AY950-00131-002 found under Amplifier Audio Fre by Atlantis Systems International. The National Stock Number assigned to this part is 5996219131179, 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 AY950-00131-002.