As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING THE ACCOMPLISHMENT OF ALLEGIANT ZL-500-03-1-002_P1-OP-UP/0 EWIS TASK, IT WAS FOUND THE LH WING, EXTERNAL TOP SKIN PANEL 2 FROM BETWEEN RIB 14 + 350MM ON REAR SPAR SKIN SKIN WITH CORROSION. DUE THIS FACT THIS CONDITION WAS REPORTED TO AIRBUS. AIRBUS PROVIDED REPAIR INSTRUCTIONS UNDER DOSSIER 81173299 AND REPAIR WAS DOCUMENTED UNDER COOPESA JOB A1N017 ITEM 5-43).