As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUBMITTER STATES THIS IS THE FOURTH STEERING ARM FOUND CRACKED. THIS ARM CHANGED ON PA28-161 AND DASH 181 WITH A TALLER MOUNT FOR THE STEERING RODS TO ATTACH. SUBMITTER THINKS THE ADDED FORCE, WITH TIME, IS CRACKING THE HORN AT THE FLAT PLATE.