As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - FLT NR 497 - LOUD VIBRATION ON FORWARD RIGHT PART OF AIRCRAFT. FLIGHT RETURNED TO PIT WHERE LANDING WAS WITHOUT FURTHER INCIDENT. MAINTENANCE CLOSE FORWARD LAV SERVICE LATCH. NO OTHER FAULTS FOUND ON FORWARD FUSELAGE OF AIRCRAFT, OK FOR SERVICE. (W)