What was found
EICAS "R GEN DRIVE" & OVHD "DRIVE" LIGHT CAME ON DURING MOD TURBULENCE. LIGHT WENT OUT AFTER A FEW SEC'S. 10-11-07 SERVICED IDG APPROX 50 PUMPS OF OIL PER UA MANUAL. THIS ACFT IS TO FLY NON ETOPS DUE TO REPEAT ELECTRICAL IDG TRIPPING PROBLEMS ON THE RT ENGINE. ACFT TO REMAIN NON-ETOPS FOR FIVE FLIGHTS TO CONFIRM FIX AND NORMAL OPERATION OF BOTH ENGINE IDG'S OF OIL UNTIL OVERFLOW. IDG PDI BUTTON NOT POPPED. PRIOR TO CF'G, SERVICED IDG (5 PUMPS) TOOK AIRCRAFT TO RUNUP FOR LONG PACK BURN. REPLACED FUEL OIL COOLER. LEAK CHECKED AND SERVICE IDG TO NORMAL CAPACITY.