As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THERE WAS ONE EVENT EXPERIENCED BY JAC WHERE ONE WIPER ARM (RHS) BROKE DURING FLIGHT. INVESTIGATION PERFORMED AND DETECTED A WRONG MATERIAL COMPOSITION OF THE TUBE, ASSOCIATED WITH A HARDNESS LOWER THAN REQUESTED IN THE WIPER ARM SPECIFICATION.