As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEVEL CRUISE AT FL-390 VMC CONDITIONS. LOUD NOISE (BANG) FROM NR 1 ENGINE. N1 IMMEDIATELY DROPPED TO ABOUT 17 PERCENT. EMERGENCY WAS DECLARED, ENGINE SHUTDOWN CONDUCTED, AIRCRAFT WAS LANDED AT ELP. ENGINE IS BEING CHANGED. AT ENGINE DISASSEMBLY FOUND: 2ND STAGE LPC ROTOR ASSEMBLY; ONE OF THE DOVETAILS BROKE OFF CAUSING RELEASE OF TWO BLADES AND THE SUBSEQUENT DAMAGE TO OTHER ENGINE COMPONENTS.