1. A method for managing an airplane fleet, said method comprising: developing a gold body database for an airplane model for each non-destructive inspection system implemented to detect defects; inspecting, over a period of time, a plurality of candidate airplanes of said airplane model, using different types of non-destructive inspection systems and said gold body database associated with each of said different types of non-destructive inspection systems, to identify defects present on said plurality of candidate airplanes; repairing or monitoring defects detected on said plurality of candidate airplanes; conducting a trend analysis by analyzing collective defect data obtained from said inspecting of said plurality of candidate airplanes, and wherein said trend analysis assigns a defect to one of said plurality of candidate airplanes by associating said defect with at least one item selected from a group consisting of airplane manufacturer, airplane type, airplane model, airplane tail number, airplane part noun, airplane part serial number, and airplane component or sub-component location by number; and maintaining said airplane fleet, which includes said plurality of candidate airplanes, by performing predictive analysis using results of said trend analysis.