What was found
DURING ROUTINE C-CHECK FOUND AFT ENTRANCE DOOR SILL HAS TOOLING DAMAGE AT STATION 1620 LONGERON 20 LT. REMOVED DAMAGE. FABRICATED REPAIR PART. LOCATED, DRILLED, DEBURRED, TREATED, PRIMED, INSTALLED REPAIR PART AND NEW FASTENERS AT STA 1620 LONGERON 20 LT IAW SRM 53-2-0, 51-1-21, 51-1-4, AND 51-1-8.