As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 2564 - BIL - PASSENGER REPORTED TO CREW HE SAW FUEL OR LIQUID COMING OFF TOP OF WING. CREW VERIFIED, AND RETURNED TO BASE WITH NO FURTHER INCIDENT. FOUND FUEL TO BE COMING FROM RIVET ON TOP OF WING. REPLACED AND RESEALED 4 LEAKING RIVETS ON TOP SIDE OF WING OUTBOARD OF RT ENGINE NACELLE. NO FURTHER LEAKS NOTED DURING LEAK CHECK. (M)