Hi CONF iture,
Relative to Habsheim:
I don't believe there was a compressor stall in one engine at all. indeed the engines did not spool up in 1 or 2 seconds. This comes from the a pilot error of setting the engines at minimum flight idle. In this case, engines may take 5 seconds to increase from complete idle to good power (80% of continuous max). The lack of power was made worse with the slowing down and the extremely low speed in such a way that the tail was lower than the undercarriage. It can be pointed out that those conditions never happen during a normal landing, that is why pilots have been baffled with the airplane's poor reactions. Air France had been informed by CFMI of the 5 second delay in spool up from minimum flight idle, but the word was never passed to the Habsheim crew before the flight. Subsequently the delay in spool up was fixed by CFMI, probably by changes made to the engine control electronic management system.