As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPT, REC'D THE LEFT WING OVERHEAT DURING CLIMBOUT. FOLLOWED QRH. FROM THEN ON, LT WING ANTI-ICE WAS EXTREMELY SLOW TO HEAT. FOUND BROKEN TANG IN WING A/I CTL SWITCH. REMOVED AND REPLACED SW & OP CHECK GOOD IAW AMM 30-12-00. PARTS EFFECTIVITY VERIFIED.