As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
******MAJOR******WHILE AC WAS IN FOR HEAVY CHECK FOUND 247-21 RT WING FIXED UPPER SKIN TE PANEL CRACKED (1 CRACK AT .400 IN LONG) AT SPOILER NR 1 OUTBOARD HINGE. MX REPAIRED BY INSTALLING A REPAIR DOUBLER TO WING SKIN PN 170-29360-403 IAW ETD2018-170-133971. FOR DETAILS OF WORK PERFORMED SEE WORK CARD 0014. ******MAJOR*****