As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT NR 3518 OUT OF MSP, RIGHT OUTER WING ANTI-ICE VALVE IS FAILED SHUT. AIR RETURN TO MSP. MAINTENANCE REPLACED RIGHT OUTER ANTI-ICE VALVE P/N HTE 250076-1, S/N ON FR158BA, S/N OFF FRTR074AV. OPS AND LEAK CHECK GOOD IAW AMM 30-11-17-201.