Depot-level maintenance took longer than expected for nearly three-quarters of Air Force aircraft from fiscal 2019-2024, according to a new report, as unplanned repairs rise across the aging fleet. The report, from the Government Accountability Office, also found that the extent of the delays has been masked because officials often revise their target timelines after unplanned work occurs.
Even after reducing the scope of Block 4 F-35 upgrades, Lockheed Martin will still needs two years to develop and install planned improvements, the Government Accountability Office said in a new audit of the fighter program. Details about what upgrades will be carried into production, ...