Aircraft jet engine system for optimizing power usage from damaged fan blades and corresponding method

An aircraft jet engine system includes at least one gas turbine engine (10) having a fan (14) including a rotor and a plurality of fan blades (100). A sensor system (102, 104) in the fan section (14) senses information about the operation of the blades (100) and provides feedback on the condition of each blade (100) to a control (154). The control (154) is programmed to take in the sensed information and identify a safe operating range for the gas turbine engine (10) based upon damage information developed from the sensed information with regard to each of the blades (100). An aircraft jet engine system incorporating a plurality of gas turbine engines (100) wherein safe operating ranges are developed for each of the gas turbine engines is also disclosed as is a method of operating an aircraft jet engine system.