As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT GROUNDED. LOWER FUSELAGE FWD CARGO COMPARTMENT FROM BS400 TO BS480 BETWEEN STR28L AND STR28R INNER SKIN WITH CORROSION AT DRAIN VALVES AND ANTENNA AREA. REPAIRED SKIN PANEL AT LOWER FUSELAGE, FWD CARGO COMPARTMENT BETWEEN BS460 AND BS480, AND BETWEEN STR27R AND STR27L IAW EO-2016-2083-R00 REV0 DOCUMENTED ON FAA 8100-9.