As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT LOWER WING PLANK IS CORRODED UNDER PANEL 550FB, INBOARD SIDE 3 INCH LONG BY .100 WIDE BY .002 INCH DEEP, FORWARD SIDE .200 INCH LONG BY .100 INCH WIDE BY .002 INCH DEEP. S/D - REPAIRED LEFT WING LOWER PLANK FUEL TANK ACCESS DOOR CUTOUT FOR PANEL 550 FB IAW BOMBARDIER, INC REO 601R-57-21-030 REV D.(M)