A new report from the Government Accountability Office indicates that the US Air Force’s ambitious effort to modernize the B-52 Stratofortress fleet is encountering major challenges. Of the thirteen modernization initiatives intended to extend the bomber’s operational life into the 2050s, ten are affected by budget increases, schedule delays, and technical uncertainties. The largest concern centers on the Commercial Engine Replacement Program, whose projected cost has climbed to $15.4 billion after increasing by roughly $3 billion since 2023. The project has also slipped by more than a year, raising concerns over long-term fleet readiness. The GAO emphasized that continued delays could worsen maintenance difficulties because repair facilities are already struggling to obtain spare parts for the aircraft’s legacy TF33 engines. Any prolonged disruption could reduce the operational availability of the Air Force’s active B-52 fleet. Although officials plan to begin manufacturing replacement engines before flight testing concludes, the oversight agency warned this approach could result in expensive modifications later. The report recommended delaying production until program risks are better understood, though the Air Force only partially supported that recommendation while agreeing with several other improvement measures.
