As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT IS IN C-CHECK WHEN INSPECTION FOUND A CRACK ON THE LT WING AT RIB NR 5 IN AREA FWD OF PREVIOUS SB MOD. CRACK RUNS FROM LOWER FLANGE OTBD THRU THE HYLOCK HOLE AND CONTINUOUS VERTICALLY 6". R & R THE NR 5 RIB IAW EC5710-01239. ALL WORK ACCOMPLISHED AND WILL BE RELEASED AT THE END OF THE CHECK.