What was found
#1 ENG IDG LOW OIL UPON WALK AROUND DURING OIL SERVICE OF #1 ENG FOUND WITH HEAVY OIL STREAKING/DRIPPING FROM OB SIDE. GROUNDED - YES. ACCOMPLISHED IDG OIL SYSTEM STATIC LEAK CHECK PER B737-900 AMM 24-11-00. NOTED A SLIGHT OIL LEAK AT THE CHARGE FILTER CAP WITH NO OTHER LEAKS NOTED. REMOVED & REPLACED IDG CHARGE COVER & FILTER. ACCOMPLISHED 5 MINUTE ENGINE RUN & NO LEAKS NOTED. REF AMM 24-11-41. (REF ASA TSR 713695)