What was found
SFO - FLT 59 - RIGHT GENERATOR DRIVE AND GENERATOR CONTROL LIGHT ILLUMINATED ALONG WITH THE RIGHT BUS OFF LIGHT. RIGHT GENERATOR WAS DISCONNECTED. THE RIGHT BUS WAS NOT RESTROED. THE BUS TIE ISOLATION LIGHT WAS NOT ON AND BY RECYCLING THE BUS TIE SWITCH THE RIGHT AC BUS WAS RESTORED. REMOVED AND REPLACED RIGHT IDG. OPS CNA LEAK CHECK REQUIRED EMP 106357. OPERATED AND LEAKED CHECKED RT IDG. OPS CHECKS NORMAL. CHECKED A/C BUSS TIE OPERATION PER MM. NO FAULTS NOTED AIRCRAFT A/C. ELECTRICAL SYSTEM CHECKS OK. (M)