What was found
DURING C-4 CHECK, INSPECTION REPORTED FUSELAGE LOWER STRINGER BETWEEN STA 500 AND 500A AND STR 27R AND 27L CRACKED. REMOVED WORN STRINGER PER SRM 51-40-02, PAGE 3. INSTALLED SERVICEABLE STRINGER PER SRM 51-40-02, PAGE 3 AND 51-10-02, PAGE 12.