As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOLLOW-UP TO NR 1 IDG FREQUENT SERVICING. GROUNDED - YES. FOUND EVIDENCE OF THE IDG AIR/OIL COOLER LEAKING. REPLACED THE IDG AIR/OIL COOLER REF AMM 24-11-21. LEAK CHECK GOOD. COMPLETED STEP 1 IDG STATIC LEAK CHECK NO OTHER LEAKS NOTED.