As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - FLT 0909 - DURING CRUISE AT FL 330, RIGHT GENERATOR DRIVE LIGHT ILLUMINATED AND RIGHT GENERATOR CONTROL LIGHT DISCONNECTED GENERATOR DRIVE. REPLACED RIGHT IDG PER MM. CHECKED PER MM. WORKS OK. PLACARD REMOVED, CLEARED MIC 3942403F4/0155.10MAY.MIA. (X)