A lifecycle obsolescence forecasting system. The system may include a data integrator configured to receive part information for a plurality of parts. The system may include a sustainability optimizer configured to receive one or more sustainability requirements for a part in the plurality of parts. The system may include a forecaster coupled to the data integrator and the sustainability optimizer, wherein the forecaster may be configured to analyze the part information and the one or more sustainability requirements to establish a component stock-out date for the part, wherein the component stock-out date may comprise a date when a last spare of the part is forecast to be removed from stock, and wherein the component stock-out date may be established as a function of at least the part usage rate and a corresponding failure rate of the part.