What was found
DURING HEAVY MAINTENANCE: WINGS / CENTER WING BOX / UPPER SKIN PANEL / UPPER SURFACE / FRAME 41-42 / STIFF 16-17 / CORROSION DAMAGE - PERMANENT REPAIR. (CONSIDERED AS A MAJOR REPAIR)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY MAINTENANCE: WINGS / CENTER WING BOX / UPPER SKIN PANEL / UPPER SURFACE / FRAME 41-42 / STIFF 16-17 / CORROSION DAMAGE - PERMANENT REPAIR. (CONSIDERED AS A MAJOR REPAIR)