As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WING ANTI ICE VALVE R EICAS STATUS RIGHT WING ANTI-ICE (WAI) VALVE FAILURE. R WING ANTI ICE VALVE FAILS CLOSED WHEN SELECTED ON REMOVED & REPLACED R WAI VALVE. R WAI VALVE INSTALLATION TEST OK. CONFIRMED NO STATUS MSG. PER AMM TASK 30-11-03. ANTI-ICE VALVE LEAK CHECK PERFORMED WITH MANIFOLD PRESSURE APPLIED, NO LEAK FOUND AT THE VALVE CONNECTIONS.