As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 403 - BOI TO BOI - AFTER TAKEOFF FROM BOI TOWER ADVISED FUEL LEAKING FROM LEFT WING, RETURNED TO BOI. FUEL FOUND ON UPPER AND LOWER SURFACE OF LEFT WING. MX DISPATCHED MX CREW TO BOI AND INSPECTED AND FOUND LEFT VENT VALVE LEAKING. MX REMOVED AND REPLACED LEFT WING VENT VALVE IAW EMB 145 AMM 28-23-06 AND PERFORMED OPERATIONAL CHECKS SUCCESSFULLY. THE A/C WAS APPROVED TO RETURN TO SERVICE.