59 TES’ MxOT Tests First Live Engine Oil Service on F-22 Raptor
In a milestone test that could revolutionize maintenance procedures across the U.S. Air Force's fighter fleet, the 59th Test and Evaluation Test Squadron’s Maintenance Operational Test division at Nellis Air Force Base, Nevada, successfully conducted its first event to service the F-22 Raptor’s F119 engine with oil while it was running.(U.S. Air Force Courtesy Photo)