As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AS ICE DOORS WERE DEPLOYED, A LARGER THAN NORMAL TORQUE LOSS WAS NOTED. UPON LANDING, FOUND LEFT ENGINE BLEED AIR LINE FAILED. THIS LINE WAS MANUFACTURED IN MARCH '66. INNER NYLON OF LINE WAS HARD AND BRITTLE AND IS SUBJECT TO HOT BLEED AIR.