As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON INITIAL DESCENT WE SELECTED THE WING ANTI-ICE. WE THEN RECEIVED AN AIR MANF 1 FAIL. COMPLIED WITH CHECKLIST & CONTINUED UNEVENTFUL. THE ALERT EXTINGUISHED ON APPROACH AFTER TEMPERATURE DROPPED IN THE DUCT. R & R LT WING MANIFOLD FAIL DETECTOR PRESS SWITCH IAW AMM 36-23-03-4. CHECKED NORMAL. WITH WING ANTI-ICE ON ACCOMPLISHED GVI OF LT WING. CHECKED NORMAL.