As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER REMOVING THE FLAPS TO REPAIR THE D TRACK WEB IAW AIRCRAFT SERVICE CHANGE 318B. THE LT OUTBOARD FLAP ACTUATOR SCREWJACK BALL RETURN TUBE COVER WAS FOUND SHEARED OFF (SUSPECT IMPROPER INSTALLATION). REPAIRED IAW CUSTOMER BULLETIN NR 99.