What was found
ORD - AT FL310 PROCEEDING TO KLAX NEAR HLA 1.3 HOURS AFTER DEPARTURE, NR 1 ENGINE EXPERIENCED COMPRESSOR STALL FOLLOWED BY FLAMEOUT. EGT WENT TO 960 CELCIUS FOR 4-5 SECS ENGINE SHUTDOWN. DESCENDED TO FL240 N1 AT 17 PERCENT, OIL PRESSURE AT 11 PSI. CONTACTED TECH CENTER AT MMV AND ATTEMPTED RELIGHT UPON TECH CENTER REQUEST, UNSUCCESSFUL AS N2<23 PERCENT WHILE EGT OVER 600 CELSIUS, ADVISED TECH CENTER RETURNING TO KORD. WEATHER AT KORD WAS VFR. ACCOMPLISHED AIR TURN BACK AND UNEVENTFUL 3 ENGINE LANDING. CONDUCTED EXTERIOR INSPECTION OF ENGINE. DISCOVERED METAL IN THE TAILPIPE. REMOVED AND REPLACED NR 1 ENGINE AS PER EIA TASK FORM 9724001 AND ACCOMPLISHED HIGH POWER RUNUP AS PER 9724007. (M)