Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D90P found under Microphone Magnetic by Altec Lansing Corp. The National Stock Number assigned to this part is 5965013701891, 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 D90P.