Originally Posted by
Kiwiguy
This happened to an RNZAF 757-200 last year and the surge of pressure against fan blades from behind cracked many of the blades. The entire engine needed to be pulled.
Aircraft which keep flying after such an incident risk losing fan blades in flight during future flights.
This does not sound right. I have serious doubts about the explanation.
Any details to clarify or support this?
More typically compressor blades and not fan blades were involved. Typically cracked compressor blades precede the surge, by one of the blades coming loose in the gas stream. On rare occasions repeated surging left unabated over a minute or so could crack the compressor blades.