As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERSION - ENG VIBRATION EVM (NR 1) 1.0 (NR 2) .6 (NR 3) .8 MACH .831 FL 370 ENG NOISE & VIBRATION FELT THROUGH THE AIRFRAME. REDUCED POWER OF NR 1 ENG TO MACH .82 EVM .9 .4 .5 MACH .81 EVM .9 .5 .8. LT WING FILLET ASSY REPLACEMENT FOUND FILLET ATTACH POINT TO NR 1 SLAT CRACKED. REF LP 412451.