As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
**ATB** - AFTER TAKEOFF RECEIVED LVL 1 ENG 1 A-ICE 1 DISAGREE AND ENG 3 A-ICE 3 DISAG. DURING DESCENT, MESSAGES EXTINGUISHED. TRANSFERRED TO NR 456456 FOR PERMANENT REPAIRFOUND ENGINE 1 & 3 ANTI-ICE LOCK IN THE OPEN POSITION, REPOSITIONED ANTI-ICE IN THE NORMAL POSTIION IN REF MD11 AMM 30-22-00-700-803.