What was found
DURING HEAVY MAINTENANCE: WINGS / LH WING / TOP SKIN PANEL 2 / UPPER SURFACE / FRONT SPAR AT RIBS 19-20 / BONDING SPIGOT / CORROSION - PERMANENT REPAIR (CONSIDERED A MAJOR REPAIR)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY MAINTENANCE: WINGS / LH WING / TOP SKIN PANEL 2 / UPPER SURFACE / FRONT SPAR AT RIBS 19-20 / BONDING SPIGOT / CORROSION - PERMANENT REPAIR (CONSIDERED A MAJOR REPAIR)