As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE THE AC WAS ON HEAVY VISIT MAINTENANCE FOUND L/H WING LOWER SKIN CRACKED AROUND FASTENER 3.500" OTBD OF RIB 4A AND 3.250" AFT OF SPAR 2. REPAIRED L/H WING LOWER SKIN DOUBLER AND INTERNAL SPLICE AROUND FASTENER 3.500" OTBD OF RIB 4A AND 3.250" AFT OF SPAR 2 IAW ETD2021-170-032992.