What was found
DURING CHECK-C MAINT IN AFT CARGO BIN THE DOOR LOWER THRESHOLD BEAM WAS CORRODED AND HAD 3 FIELD REPAIRS INSTALLED. REMOVED CORRODED BEAM AND INSTALLED NEW BEAM (P/N 593638-501) PER SPM 6-70-01 PAGE 3 ITEM B1, 2, AND SRM 51-60-0 PAGE 9, SRM 51-60-0 PAGE 936, SRM 51-60-0 P98, SRM 51-30-3 PAGE 1, SRM 51-30-2, AND DRAWINGS 5930483, 5936038, 9919603, 5936075, 5936042, 9936074, AND 9936073.