reintroduction-of-early-technologies-The reintroduction of technologies of earlier engine types also requires the accompanyingspecial knowledge, experience, and productionknow-how of the earlier time. White exhaust cloudfollowing the fractureof compressor bladesmade from analuminium alloyHaircut of the aluminium alloystator vanes Steel compressor rotor blades The jammed stator vanefragments bent the rotorblades forwardNotching of the rearstator vane edgesdue to the forward-bent rotor blade tips Compressor damage with a blade haircut107Fracture load cyclesStress amplitudeLow dynamic strength levels andno fatigue strength; a dangerouscombination