The 40th Flight Test Squadron’s Detachment 1, which executed A-10 developmental test operations, was officially inactivated as result of the jet’s ongoing divestment.

The U.S. Air Force has announced the official inactivation of the 40th Flight Test Squadron’s Detachment 1 on Dec. 5, 2025. The detachment was a geographically separated unit, located at Davis-Monthan Air Force Base, Arizona, which executed A-10 developmental test operations . Contents The 40th Flight Test Squadron’s Detachment 1, which executed A-10 developmental test operations, was officially inactivated as result of the jet’s ongoing divestment. End of A-10’s Developmental Testing Detachment 1’s Legacy The A-10’s Divestment

End of A-10’s Developmental Testing

The inactivation marks the end of development

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