As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OP 16 MAINT CHECK, FOUND LEFT WING HAD CRACK APPROX 1 INCH LONG AT LOWER I/B HOLE ON FACE OF REAR SPAR AT I/B FLAP HINGE AREA, 5 O'CLOCK POSITION. STOP DRILLED CRACK PER DWG JO60271. REPAIRED LT WING REAR SPAR AT I/B FLAP HINGE AREA PER DOUGLAS PRINT NUMBER JO60271.