What was found
RIGHT GENERATOR DRIVE LIGHT CAME ON DURING FLIGHT DEBRIEFED CREW. CREW STATED LIGHT CAME ON DURING FLIGHT. ACCOMPANIED BY EICAS STATUS R GEN DRIVE. REF FIM 24-20 FAULT TREE 801. BITE CHECKED BPCU, FOUND FOLLOWING MESSAGES, ATTACHED PIX DRAINED RIGHT IDG OIL AND FOUND IDG TO HAVE 3 QUARTS OF OIL. SUSPECT LOW OIL CAUSED OVERHEAT CONDITION LEADING TO DRIVE LIGHT ILLUMINATION. #2 ENGINE IDG REMOVED AND REPLACED REF AMM 24-11-01. PERFORMED BPCU BITE TEST AND RESET TEST REF AMM 24-11-00-745-001. ALL SYSTEMS SHOW OK. COMPLETED INSTALL OF #2 ENGINE IDG. REF AMM 24-11-01. OPS CHECK GOOD. NO LEAKS FOUND.