As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL BEGAN LEAKING FROM RIGHT WING TANK EN ROUTE PVD-DTW. LEAK WAS APPROXIMATELY 1600 LBS IN ONE HOUR. FLIGHT DIVERTED TO BUF AND LANDED WITHOUT INCIDENT. REPLACED CLIMB VENT VALVE IN LEFT MAIN FUEL TANK. LEAK CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.