What was found
DURING APPROACH TO RUNWAY 20R, SEVERE AIRFRAME VIBRATION ENSUED WHEN FLAPS 50 DEG WAS SELECTED. FLAPS 35 DEG WAS THEN SELECTED & VIBRATION CONTINUED. ENG 2 EGT HI ALERT ILLUMINATED. ENG 2 WAS SHUT DOWN & SECURED PRIOR TO LANDING WITH FIRE HANDLE & FIRE AGENT WAS DISCHARGED AS A PRECAUTIONARY MEASURE. DECLARED EMER PRIOR TO LANDING. EMER CREWS INSPECTED ACFT CLEAR OF RUNWAY FOR INDICATIONS OF FIRE & FOUND NONE. TAXIED ACFT TO GATE WITHOUT INCIDENT. QRH PROCEDURES COMPLETED, AFTER ACFT SECURED ON TAXIWAY & INSPECTED BY EMER CREW. ENG BORESCOPE PERFORMED, NO DEFECT FOUND. DURING EGT INDICATION SYS, TROUBLESHOOTING FOUND HARNESS THERMOCOUPLER RT UPPER LOOP A SHORT TO GND. R & R HARNESS ASSEMBLY IAW AMM 73-21-07-4. CARRIED VIBRATION SURVEY ON NR 2 ENG IAW AMM 71-02-08-5-2 IAW TSI 77-31/1814 STEPS 2 FOUND SATIS ACFT OK FOR SERVICE.