As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
3727 LEFT COWL ANTI-ICE CAUTION INFLIGHT WITH SWITCH OFF. LEFT COWL SHOWED YELLOW. 14TH STAGE SOV WAS OPEN WHILE CAUTION MSG WAS PRESENT. COMPLIED WITH QRH & RETURNED, EMER DECLARED. R & R LT ENG COWL ANTI-ICE VLV IAW SUPP 10-094. OPERATIONS CHECKED GOOD AT THIS TIME. SN OFF 0123B & SN ON 1968B.