What was found
PAE - FLT 3868 - DURING ROUTINE C-14 MAINTENANCE CHECK, FOUND CORROSION ON INSIDE OF STR 27L, BS 500 TO BS 500B. REMOVED STR 27L FROM BS 370 - BS 540. INSTALLED NEW STRINGER. CUT HOLE AT BS 445 - BS 465, STR 27L FOR ACCESS. FABRICATED AND INSTALLED REPAIR DOUBLER PER SRM 53-10-3, ARM 53-30-3. (X)