As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/RDU - FLT 6573 - DURING CRUISE AT 1050 HRS ON 6-23-95, RETURNED TO IAD DUE TO LT ENGINE VIBRATION IN-FLIGHT WITH TORQUE. SETTING ABOVE 64 PERCENT. AIRCRAFT RETURNED TO IAD WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED THE LT STARTER/GENERATOR. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (X)