01319nam 2200349 a 450 991070176250332120120423103340.0(CKB)5470000002420472(OCoLC)787856157(EXLCZ)99547000000242047220120423d2012 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierAir traffic control modernization[electronic resource] management challenges associated with program costs and schedules could hinder NextGen implementation : report to congressional committees[Washington, D.C.] :U.S. Govt. Accountability Office,[2012]1 online resource (v, 142 pages) illustrationsTitle from PDF title screen (viewed Apr. 19, 2012)."February 2012.""GAO-12-223."Includes bibliographical references.Air traffic control modernization Air traffic controlTechnological innovationsUnited StatesFinanceAir traffic controlTechnological innovationsFinance.GPOGPOBOOK9910701762503321Air traffic control modernization3489182UNINA