As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 4 ENGINE FLAMEOUT AT TOP OF DESCENT ENGINE REPLACED. INVESTIGATION REVEALED WEAR OF INTERNAL EVC COMPONENTS CAUSED THE IMPROPER POSITIONING OF THE COMPRESSOR VANES. THE CORRELATION BETWEEN THE RAPID COMPONENT DEGRADATION AND THE NEW PRATT AND WHITNEY VANE SCHEDULE, WHICH WAS INCORPORATED INTO THIS UNIT, IS BEING INVESTIGATED.