As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)DURING MAINTENANCE THE RETRACTABLE DOOR STEP STRUT BROKE OFF APPROXIMATELY 2 INCHES ABOVE THE LOWER AXLE CENTRE LINE. INSPECTION REVEALED A CRACK APPROXIMATELY 5/8 INCH LONG PROPAGATING FROM THE LOWERCASTING PLUG HAD PREVIOUSLY GONE UNDETECTED.