Originally Posted by
tdracer
I could probably do an entire thread on that subject.
Yes, please
... PW4000 ... finally they ended up redesigning the entire compressor (based on the PW4000/112" compressor) but they didn't certify the fix until 2004 or 2005 - then it took several years to retrofit the entire worldwide fleet of PW4000/94" engines with new compressors ...
So it took 20 years or more, on the 747 fleet? Was that the reason why MTU was involved regarding compressor?
probability of two engines surging on the same takeoff was less than 10-9/takeoff - so of course it then happened on an Airbus twin.
Couldn't find that one. Any small hint?