As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ANTI-ICE DUCT MESSAGE WITH DUCT FAIL IN SWITCH LIGHT WITH WING ANTI-ICE LIGHT ON. COMPLIED WITH QRH, SELECTED 14TH STAGE BLEEDS AND WING ANTI-ICE OFF. MESSAGE CLEARED. WHEN 14TH STAGE BLEEDS SELECTED ON AND WING ANTI-ICE TO STANDBY, MESSAGE DID NOT REAPPEAR. REMOVED AND REPLACED SENSING ELEMENT A47WK REF AMM 36-21-04, OPS CHECK GOOD. (M)