F-22 Resumes Normal Flight Operations

F-22 Resumes Normal Flight Operations: USAF Says Modifications To Oxygen Systems Have Been Completed Across The Fleet The F-22 Raptor has resumed normal flight operations after modifications to aircrew life-support equipment were completed across the fleet, including the upper pressure garment and related hoses, valves and connectors. Completion of this task eliminates the need to restrict flight operations to remain within a 30-minute flying distance from an airfield suitable for landing.