As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX INFLIGHT T1782/07JAN SAN - DFW AT FLIGHT LEVEL 310, LEFT GENERATOR TRIPPED ON AND OFF SEVERAL TIMES. CONSTANT SPEED DRIVE OIL TEMPERATURE OVER RED LINE. UNABLE TO START APU. TURNED LEFT GENERATOR SWITCH OFF. CONSTANT SPEED DRIVE OIL TEMPERATURE COOLED BELOW RED LINE. LANDED PHX WITHOUT INCIDENT. REPLACED LEFT CONSTANT SPEED DRIVE AND GENERATOR. SYSTEM GROUND CHECKED NORMAL OPERATION.