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MASAD-82-6 1 (1981-11-12)

handle is hein.gao/gaobabcqh0001 and id is 1 raw text is: 41 UNITED STATES GENERAL ACCOUNTING OFFICE ' -4 WASHINGTON, D.C. 20548 MISSION ANALYSIS AND LM116856 SYSTEMS ACQUISITION DIVISION B-203651 NOVEMBER 12,1981 The Honorable Caspar W. Weinberger The Secretary of Defense 116856 Attention: Assistant for Audit Reports Dear Mr. Secretary: Subject: DOD Should Defer Buying New TACAN Equipment and Evaluate Other Alternatives (MASAD-82-6) We have completed a followup review to our March 21, 1978, report entitled Navigation Planning--Need for a New Direction (LCD-77-109). That report pointed out that because the Department of Defense (DOD) planned to replace the Tactical Air Navigation (TACAN) System with the NAVSTAR/Global Positioning System (GPS), expenditures to modernize and buy new TACAN equipment were ques- tionable. In May 1979, the Surveys and Investigations Staff of the House Appropriations Committee issued a report on the Federal Government's navigation, position, and location systems which recommended that the procurement of new replacement TACAN equip- ment be deferred as long as GPS remained its potential replace- ment. After these reports, both the fiscal year 1980 House Appro- priations Committee and the Appropriations Committees Conference reports gave specific guidance to DOD that any interim fielding of new TACAN equipment could result in unnecessary expenditures and duplication and that to maximize GPS's cost effectiveness, DOD should avoid buying new equipment that GPS could replace. The Navy has spent approximately $12 million for 37 replace- ment land-based TACAN transmitters. As shown below, the Navy and Air Force plan to spend from 1982-86 approximately $49 million for additional replacement TACAN equipment. --The Navy plans to spend from 1982-86 approximately $14 mil- lion to procure an. additional 38 land-based TACAN trans- mitters. --The Air Force plans to spend from 1982-85 approximately $30 million to buy and install approximately 132 TACANs, (941205)

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