Air Defense Training:
T-33 Aircraft Replacement Options
NSIAD-87-10: Published: Oct 1, 1986. Publicly Released: Oct 31, 1986.
Additional Materials:
- Full Report:
Contact:
In response to a congressional request, GAO reviewed the Air Force's plan to retire obsolete Air National Guard T-33 aircraft to determine whether replacing T-33 aircraft with T-39 aircraft and using the contractor training alternative were cost effective.
The Air Force: (1) found that the flying-hour costs to restore, operate, and maintain the T-39 aircraft would be higher than for the T-33 aircraft; and (2) estimated that the costs to operate 60 T-39 or T-33 aircraft for the first 5 years, in inflated dollars, would be $401.3 million and $344.3 million, respectively. GAO found that the estimated costs for upgraded airborne electronic countermeasure (EMC) equipment for both aircraft and the cost to retrieve and restore the T-39 aircraft were understated because, after adjusting for these understatements, the estimated costs to operate 60 T-39 or T-33 aircraft for the first 5 years, in inflated dollars, would be $409.5 million and $351.3 million, respectively. GAO was unable to determine whether contracting out the EMC mission would be more cost-effective than using the T-39 aircraft the Air Force and Air National Guard operated.
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. -
Defense Intelligence:
Comprehensive Plan Needed to Improve Stakeholder Engagement in the Development of New Military Intelligence SystemGAO-21-57: Published: Nov 19, 2020. Publicly Released: Nov 19, 2020. -
Defense Production Act:
Opportunities Exist to Increase Transparency and Identify Future Actions to Mitigate Medical Supply Chain Issues:GAO-21-108: Published: Nov 19, 2020. Publicly Released: Nov 19, 2020.
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