What was found
AIRCRAFT 8139, FWD CARGO DOOR SURROUND LOWER SILL PLATE UPPER SECTION HAS 10 FASTENER HOLES WITH CORROSION AROUND AND INSIDE HOLES.REF PRI ER /A 613121-14 DRAWING FIG #3, HOLES #1, 2,5,7,11,13,15,18 AND 19. 1 ADDITIONAL HOLE AT FWD LOWER CORNER. CORRECTIVE ACTION: TRIM AFT TAB OF NEW SILL. MANUFACTURE REPAIR PARTS PER ER/A 613364-14 FIGURE 4 SECTION B-B AND INSTALL THEM WET AND INSTALL NEW SILL WET. APPLY CORROSION INHIBITING COMPOUND ON SCUFF PLATE. RE-INSTALL THE AFFECTED CARGO DOOR SCUFF PLATES PER ER/A 613364-14. (LP 0078511)