Had a scan but couldn't see this posted
The microcracks in the third stage of the integrally bladed rotor that caused a catastrophic F135 engine fire in an F-35A on June 23 began forming three weeks earlier when a pilot conducted a fairly benign maneuver with a unique combination of yaw, roll and g stresses
F-35 Blade Microcracking Began Three Weeks Prior To Engine Fire | Defense content from Aviation Week