Support Aircraft:
Analysis of Air Force Decision To Replace CT-39 Aircraft
NSIAD-86-92BR: Published: Apr 1, 1986. Publicly Released: Apr 1, 1986.
Additional Materials:
- Full Report:
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Pursuant to a congressional request, GAO reviewed the Air Force's decision to retire the CT-30 aircraft fleet and replace it with a mix of C-12F and C-21A leased aircraft.
GAO found that: (1) the Air Force used lease-versus-buy comparisons in its economic analysis of the options to replace the CT-39 aircraft and found that it was more economical to lease new aircraft than to continue operations of the existing CT-39 fleet or purchase replacement aircraft; (2) the Air Force's economic analysis was generally accurate, complete, and realistic; (3) although the full cost to extend the service life of the CT-39 fleet was not determined, the cost would have provided an additional economic justification for retirement of the CT-39; (4) although the Air Force's method of calculating leasing option costs reduced the estimated cost of leasing new aircraft over a 22-year period, the reduction did not affect the results which supported the decision to replace the CT-39; (5) there were significant differences in the operational capabilities of the CT-39 aircraft and the C-21F and C-21A aircraft; and (6) the Air Force would have to implement an extensive inspection and repair program and a series of safety and structural modifications to extend the service life of most of the CT-39 air fleet.
Dec 15, 2020
The Nation's Fiscal Health:
Information on the Spending and Revenue Implications of Potential Debt TargetsGAO-21-211: Published: Dec 15, 2020. Publicly Released: Dec 15, 2020.
Oct 7, 2020
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The Nation's Fiscal Health:
A Long-Term Plan Is Needed for Fiscal SustainabilityGAO-21-161T: Published: Oct 7, 2020. Publicly Released: Oct 7, 2020.
Sep 23, 2020
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The Nation's Fiscal Health:
Effective Use of Fiscal Rules and TargetsGAO-20-561: Published: Sep 23, 2020. Publicly Released: Sep 23, 2020.
Jan 23, 2020
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Federal Trust Funds and Other Dedicated Funds:
Fiscal Sustainability Is a Growing Concern for Some Key FundsGAO-20-156: Published: Jan 16, 2020. Publicly Released: Jan 23, 2020.
Dec 19, 2019
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State and Local Governments' Fiscal Outlook:
2019 UpdateGAO-20-269SP: Published: Dec 19, 2019. Publicly Released: Dec 19, 2019.
Nov 14, 2019
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Certificated Expenditures:
Executive Office of the President FY 2018 Certificated Expenditures Were Spent for Authorized PurposesGAO-20-139R: Published: Nov 14, 2019. Publicly Released: Nov 14, 2019.
Oct 16, 2019
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Civilian Personnel:
Additional Guidance and Consistent Data Reporting Could Help Improve the Marine Corps' Budget ManagementGAO-20-148: Published: Oct 16, 2019. Publicly Released: Oct 16, 2019.
Jun 26, 2019
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The Nation's Fiscal Health:
Actions Needed to Achieve Long-Term Fiscal SustainabilityGAO-19-611T: Published: Jun 26, 2019. Publicly Released: Jun 26, 2019.
Apr 10, 2019
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The Nation's Fiscal Health:
Action Is Needed to Address the Federal Government's Fiscal FutureGAO-19-314SP: Published: Apr 10, 2019. Publicly Released: Apr 10, 2019.
Mar 27, 2019
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Fiscal Exposures:
Federal Insurance and Other Activities That Transfer Risk or Losses to the GovernmentGAO-19-353: Published: Mar 27, 2019. Publicly Released: Mar 27, 2019.
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