As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT, CREW FELT A COMPRESSOR STALL, NR 4 ENGINE FLAMED OUT WITH EGT RISING TO RED. ENGINE WAS MOTORED UNTIL EGT WAS BELOW 150C. MAINTENANCE INSPECTED ENGINE PER MM 72--00-00, PG 601 AND FIM 71-01-00, PG 23. NO DEFECTS WERE NOTED. ENGINE RUN CHECKED GOOD. MAINTENANCE SUSPECTED TAILWIND AT TIME OF EVENT. SPECIFIC PART CAUSING PROBLEM TO BE DETERMINED.