As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HFEC OPEN HOLE INSPECTION CRACK INDICATION FOUND AT RT CTR WING BOX OF REAR SPAR HOLE (I) ON SECOND LAYER EDGE FROM FWD APPROX 0.5" (L2) LONG. THE THIRD LAYER CRACK IS NOT A CRACK AT ALL. INSTEAD IT IS A STRAIGHT LINE BUTT-JOINT BETWEEN THE REAR SPAR AND THE SHIM AS SHOWN IN EO NR 6-5710-7-3305D PART 2.