As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ENTRY THRESHOLD CRACKED AT AFT STEP ATTACH BOLT HOLE. COMBINATION OF BOLT HOLE LOCATED IN RADIUS OF FRAME AND MATERIAL THICKNESS NOT SUFFICIENT TO SUPPORT WEIGHT OF PERSON ENTERING OR EXITING AIRCRAFT. RECOMEND STRENGTHING STRUCTURE, USING THICKER METAL. NOTE: HAVE FOUND THESE CRACKS ON MFG INSPECTION PHASE 5. APPROX 75 PERCENT OF AIRCRAFT INSPECTED ARE FOUND CRACKED. (K)