What was found
DFW - FLT 457 - EN ROUTE MEM-DFW - EXCESSIVE VIBRATIONS NUMBER 1 AND 2 ENGINE IN ICY CONDITION, UNABLE TO CLEAR. DECLARED EMERGENCY, DIVERTED TO SHV, AND LANDED WITHOUT INCIDENT. REPLACED NR 1 AND 2 ENGINE LOW PRESSURE COMPRESSOR ROTATING FAIRING AND SPINNER ASSEMBLY. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)