As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 4168 - AFTER TAKEOFF FLT CREW NOTICED LEFT PROPELLER HEAT HAD FAILED. CREW ELECTED TO RETURN TO FIELD. AIRCRFT LANDED WITHOUT FURTHER INCIDENT. PIT MAINTENANCE INSPECTED AIRCRAFT DISCOVERED DE-ICE BOOTS ON BLADES NR 2 AND NR 4 WERE DEFECTIVE. PIT MAINTENANCE REMOVED AND REPLACED LEFT PROPELLER IAW MM 61-00-00, GROUND CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (M)