Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 977 0142 010 found under Handset by The Boeing Company. The National Stock Number assigned to this part is 5965010686696, 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 977 0142 010.