"The Federal Aviation Administration(FAA), partnering with other federalagencies and the aviation industry, isimplementing the Next Generation AirTransportation System (NextGen), anew satellite-based air trafficmanagement system that will replacethe current radar-based system and isexpected to enhance the safety andcapacity of the air transport system by2025. Concurrently, FAA continues tomaintain and upgrade existing airtraffic control (ATC) systems that willalso be needed for NextGen. Thisinvolves acquiring and implementingnew software and hardware.GAO was asked to determine (1) how, if at all, costs and schedules of FAAATC acquisitions programs, includingthose related to NextGen, havechanged since they were firstsubmitted to Congress, (2) the reasonsfor any such changes, and (3) theextent that selected ATC programsadhere to cost and schedule bestpractices. To do its work, GAOreviewed 30 programs and conductedcost and schedule analysis on fourprograms that had an approvedbaseline and were NextGen related.GAO reviewed acquisition documentsand interviewed FAA officials.
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