01577cam a2200397 a 4500012357150MiAaHDL20130521000000.0m d cr bn ---auaua970218s1997 dcua b f000 0 eng d 97121537 GAO/AIMD-97/20sdr-nwu2695184AKK0007TR(OCoLC)36267809PB98-169592NTIS158025GAODGAODLCIEN-Ttlccopycatn-us---TL275.3.T7U6816 1997387.7/40426/097321GA 1.13:AIMD-97-20Air traffic control :improved cost information needed to make billion dollar modernization investment decisions.Improved cost information needed to make billion dollar modernization investment decisionsWashington, D.C. :United States General Accounting Office,[1997]60 p. :ill. ;28 cm."B-271530"--P. [1]."January 1997.""Report to the Secretary of Transportation."Cover title.Includes bibliographical references.Mode of access: Internet.United States.Federal Aviation AdministrationProcurementEvaluation.Air traffic controlFinance.tlshAeronautics, CommercialCapital investmentsUnited States.Air traffic controlUnited StatesCosts.United States.General Accounting Office.United States.Department of Transportation.Office of the Secretary.01235715020130308135539.020130521000000.020130625165036.02025-11-16T18:55:29Z2025-11-16T18:50:03ZSDR-NWUUNKNOWNloader.pl-002-002BKsdr-nwu2695184ienSDRNWUien.35556025466012IEN2695184IENNWU20251116googleien.355560254660121997pdbibUS fed doc