As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON 4-28-97, THE AIRCRAFT EXPERIENCED A VERY NOTICEABLE VIBRATION AND NOISE AFTER DEPARTURE. CREW WAS ABLE TO DETERMINE THAT IT CHANGED WITH THROTTLE MOVEMENT. ACFT RETURNED TO BASE, THE LEFT STARTER/GENERATOR WAS PULLED AND CHECKED. UPON INSPECTION IT WAS NOTED THERE WAS A LOT OF PLAY IN THE AFT BEARING. THE STARTER/GENERATOR WAS REPLACED.