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Printed page 28. PDF page 28.
increase the amount of time the engine is rotating in the 26 000 rpm +/−50 rpm range, which likely increases the probability of cracks initiating or propagating in the blades of the current LPC2 design due to mechanical resonance. 2.3Open official document at PDF page 28Air Transportation Safety Investigation Report A23P0020: Engine compressor failure and fire
Printed page 30. PDF page 30.
increase the amount of time the engine is rotating in the 26 000 rpm +/−50 rpm range, which likely increases the probability of cracks initiating or propagating in the blades of the current 2nd stage low-pressure compressor design due toOpen official document at PDF page 30Air Transportation Safety Investigation Report A23P0020: Engine compressor failure and fire