As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE A CRACK WAS VISUALLY DISCOVERED ON THE RIGHT HAND CLOSEOUT RIB (P/N: 5122115-56) AT R.W.S. 106.79. THIS CRACK ORIGINATES FROM A HOLE IN THE FORWARD ROW OF FASTENERS COMMON TO THE AFT MAIN LANDING GEAR TRUNNION SUPPORT PLATE. THE CRACK TRAVELS FORWARD FROM THE HOLE APPROXIMATELY .903 INCHES. THIS RIB WILL BE REMOVED AND REPLACED USING NEW PARTS.