What was found
RIGHT GEN EICAS MSG, DISCONNECTED RIGHT GEN AND STARTED APU. CREW OBSERVED EICAS ADVISORY MSG, ELECT GEN DRIVE R, WITH MAINT MSG (LOW FREQ & LOW OIL PRESS), WHICH ILLUMINATED GEN DRIVE LIGHT. DISCONNECTED IDG. SHOP RECORDS INDICATED OVERHAUL 4/02. ON-WING INSTALLATION ON 7/02. LOW FREQ & LOW OIL PRESS MAINT MSG OBSERVED WITH FAULT INDICATES LOW OIL QTY COULD CAUSE FREQ DROP. SHOP INDICATED SUFFICIENT OIL QTY & DIP TEST INDICATED NO LEAKS FROM UNIT, NOR ANY OTHER INTERNAL COMPONENT FOUND TO HAVE CAUSED LOW FREQ. UNIT WAS OIL SERVICED 2 DAYS PRIOR TO FAULT. SHOP FINDINGS WERE NFF AFTER 6,325 HRS IN OPERATION. UNIT WILL BE OH'ED, TEST STAND OPERATED AT VENDOR. SUBSEQUENT CORR ACT, REPLACE IDG.