Strategic Bombers:
Issues Related to the B-1B Aircraft Program
T-NSIAD-91-11: Published: Mar 6, 1991. Publicly Released: Mar 6, 1991.
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GAO discussed the B-1B bomber, focusing on the lack of: (1) an effective defensive avionics system; (2) a long-term solution to minimize engine blade failures; and (3) an effective anti-icing capability. GAO found that: (1) although the Air Force spent approximately $3.2 billion on the B-1B program, it failed to demonstrate that the system met its reduced specifications; (2) laboratory test results indicated that the defense avionics system would meet current contract specifications with a few exceptions, but flight test data were still being analyzed; (3) new intelligence data identified the capability of a threat radar system the defense avionics system was not designed to counter; (4) the addition of a radar warning receiver would increase the number of threat radar systems the aircraft could detect and an improved antenna would provide increased frequency coverage; (5) between October 1988 and December 1990, five B-1B aircraft experienced engine failures as a result of broken engine blades; (6) the contractor developed and installed thicker and stronger retainer rings to replace the deficient ones found during engine blade tests; (7) the Air Force established an independent review team to assess potential solutions to the engine blade problem; (8) as of November 1989, 109 B-1B engines were damaged by ice, costing $1.6 million and requiring 4,327 hours to repair; (9) an estimated 15 percent of planned training flights were cancelled due to icing and weather problems; and (10) unofficial cost estimates indicated that resolution of in-flight and on-ground icing problems would cost about $200 million.
Jan 21, 2021
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Close Air Support:
Actions Needed to Enhance Friendly Force Tracking Capabilities and Fully Evaluate TrainingGAO-21-99: Published: Jan 21, 2021. Publicly Released: Jan 21, 2021.
Jan 19, 2021
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GPS Modernization:
DOD Continuing to Develop New Jam-Resistant Capability, But Widespread Use Remains Years AwayGAO-21-145: Published: Jan 19, 2021. Publicly Released: Jan 19, 2021.
Jan 14, 2021
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Columbia Class Submarine:
Delivery Hinges on Timely and Quality Materials from an Atrophied Supplier BaseGAO-21-257: Published: Jan 14, 2021. Publicly Released: Jan 14, 2021. -
Department of Defense:
Actions Needed to Improve Accounting of Intradepartmental TransactionsGAO-21-84: Published: Jan 14, 2021. Publicly Released: Jan 14, 2021.
Jan 12, 2021
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DOD Critical Technologies:
Plans for Communicating, Assessing, and Overseeing Protection Efforts Should Be CompletedGAO-21-158: Published: Jan 12, 2021. Publicly Released: Jan 12, 2021.
Dec 10, 2020
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Climate Resilience:
DOD Coordinates with Communities, but Needs to Assess the Performance of Related Grant ProgramsGAO-21-46: Published: Dec 10, 2020. Publicly Released: Dec 10, 2020. -
Electromagnetic Spectrum Operations:
DOD Needs to Address Governance and Oversight Issues to Help Ensure SuperiorityGAO-21-64: Published: Dec 10, 2020. Publicly Released: Dec 10, 2020.
Dec 2, 2020
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Navy and Marine Corps:
Services Continue Efforts to Rebuild Readiness, but Recovery Will Take Years and Sustained Management AttentionGAO-21-225T: Published: Dec 2, 2020. Publicly Released: Dec 2, 2020.
Nov 20, 2020
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GAO Audits Involving DOD:
Status of Efforts to Schedule and Hold Timely Entrance ConferencesGAO-21-185R: Published: Nov 20, 2020. Publicly Released: Nov 20, 2020.
Nov 19, 2020
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Defense Acquisitions:
Joint Cyber Warfighting Architecture Would Benefit from Defined Goals and GovernanceGAO-21-68: Published: Nov 19, 2020. Publicly Released: Nov 19, 2020.
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