Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 209-071-142-1 found under Sight Assembly Helmet by Bell Helicopter Textron Inc. The National Stock Number assigned to this part is 1270005780536, 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 209-071-142-1.