What was found
INFLIGHT WITH AIRFOIL SWITCH ON LT & RT ICE, PROT TEMP LOW ANNUNCIATORS REMAINED ILLUMINATED. FOLLOWED QRH CHECKLIST & PROCEEDED WITH AIR TURN BACK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
INFLIGHT WITH AIRFOIL SWITCH ON LT & RT ICE, PROT TEMP LOW ANNUNCIATORS REMAINED ILLUMINATED. FOLLOWED QRH CHECKLIST & PROCEEDED WITH AIR TURN BACK.