As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER INSTALLING ALL FOUR BRAKES, WE BLED THE SYSTEM. WHILE DOING THE NR 2 BRAKE BLEEDING, THE NR 1 BRAKE BLEED PORT ADAPTER SHEARED AND BECAUSE OF THE HYDRAULIC PRESSURE THE ADAPTER HIT OUTBOARD MLG DOOR. HYDRAULIC SYSTEM PRESSURE WAS IMMEDIATLY STOPPED.