As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VIBRATION FELT IN BOTH IN CABIN AROUND ROW 6 AND FLIGHT DECK, NO VIBRATION IN FELT IN CONTROLS. REMOVED AND REPLACED NR 1 RAM AIR VALVE ACTUATOR ASSEMBLY, LEFT EMERGENCY VENT VALVE ASSEMBLY AND RIGHT EMERGENCY VENT VALVE ASSEMBLY IAW EMB AMM. OPERATIONAL CHECK GOOD. PERFORMED FUNCTIONAL CHECK FLIGHT WITH NO DEFECTS NOTED. RETURNED AIRCRAFT TO SERVICE.