What was found
DURING A MAINTENANCE VISIT, FOUND CORROSION DAMAGE ON LONGERON 31 LEFT AT, STA 163 TO STA 170. *S/D* REMOVED CORROSION DAMAGE, FABRICATED AND INSTALLED REPAIR ANGLES IAW FAA APPROVED DER COTNEY ENGINEERING SKETCH D02-R17 AND DC-8 SRM 51-1-8, 51-1-21 AND 53-2-0.