As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF PILOTS NOTICED VIBRATION AND FLUCTUATION OF LH ENGINE AND INDICATORS. SHORTLY AFTER VIBRATION STOPPED, ENGINE INDICATION NORMALIZED AND LH GEN. FAIL ANNUNCIATED. PILOTS NOTED LH GENERATOR WAS NOT SUPPLYING ANY ELECTRICAL POWER. PILOTS DECLARED AN EMERGENCY LANDING AS A PRECAUTION. MAINTENANCE REMOVED START/GEN AND FOUND IT HAD FAILED.