As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACFT WAS IN FOR HEAVY CHECK, FOUND RT WING FUEL TANK (WING PLANK) UNDER ACCESS 622AT APPROX WS RT YW-42.0-YW-79.7 L/E OF FASTENER HOLES HAS 1 EA HOLE WITH HIGH METAL AROUND THE HOLE ON THE INSIDE OF THE TANK, BOTTOM SURFACE OF THE TANK. MX COMPLIED WITH RD 8/4-57-2033 ISSUE 1, DATED 25 JAN 2013, AND ISSUE 2 DATED 01 FEB 2013. ACFT WAS RETURNED TO SERVICE. MAJOR.