As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE ACFT ENCOUNTERED A FUEL LEAK FROM THE RT WING VENT WHILE ON THE GATE. PAXS HAD TO BE DEPLANED & A NEW ACFT UTILIZED FOR THE CONTINUATION OF THE FLIGHT. CFR WERE CALLED OUT TO THE GATE AS A PRECAUTION. CTR FUEL TANK MODE SELECTOR SWITCH US. SWITCH REPLACED, SWITCH FUNCTION CHECKED SERVICEABLE. PN E0415C3LM004 IPC = FIG 28-26-08-01.