As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO INSTALLING FASTENERS ON FLANGE OF FRAME 319.00 WHICH WERE REMOVED DUE TO CORROSION. MECHANIC FOUND CRACK AT VERY CORNER FASTENER HOLE. COMPLIED WITH EA 20-2015-363 P1. RECEIVED AND COMPLIED WITH FINAL EA 20-2015-363. RECEIVED AND COMPLIED WITH ECTC EA 20-2015-363.