Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11900 found under Ignitersparkgas Turbine Engine by B G Service Company Inc The. The National Stock Number assigned to this part is 2920002936481, and the Federal Supply Class is 2920 Engine Electrical System Components Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 11900.