United States Government Publishing Office publisher pbl distributor dst United States Government Accountability Office author aut Government Organization text government publication eng GAOREPORTS Legislative Agency Publications gao legislative 2010-08-12 U.S. Government Printing Office 2007-05-29 monographic deposited born digital 10 p. GA 1.13:GAO-07-918R https://www.govinfo.gov/app/details/GAOREPORTS-GAO-07-918R P0b002ee1803a3d7a f:d07918r DGPO 2010-08-12 2011-03-23 GAOREPORTS-GAO-07-918R machine generated eng fdlp REPORT GAOREPORTS-GAO-07-918R GAO-07-918R Air traffic control systems Air traffic controllers Air transportation Commercial aviation Concept of operations Enterprise architecture Future budget projections Program evaluation Program management Strategic planning Systems conversions Transportation planning Next Generation Air Transportation System Correspondence A70035 This letter responds to Congress's April 24, 2007, request that GAO address questions submitted for the record by Members of the Subcommittee related to the March 29, 2007, hearing entitled JPDO and the Next Generation Air Transportation System: Status and Issues. https://www.govinfo.gov/content/pkg/GAOREPORTS-GAO-07-918R/html/GAOREPORTS-GAO-07-918R.htm https://www.govinfo.gov/content/pkg/GAOREPORTS-GAO-07-918R/pdf/GAOREPORTS-GAO-07-918R.pdf GAO-07-918R https://www.govinfo.gov/app/details/GAOREPORTS-GAO-07-918R Correspondence GAO-07-918R; Responses to Questions for the Record; Hearing on JPDO and the Next Generation Air Transportation System: Status and Issues; Air traffic control systems Air traffic controllers Air transportation Commercial aviation Concept of operations Enterprise architecture Future budget projections Program evaluation Program management Strategic planning Systems conversions Transportation planning Next Generation Air Transportation System