What was found
N/R 440 - DURING "C" CHECK INSPECTION, FOUND THE FOLLOWING: RH WING # 4 ALT. TANK INTERIOR STA. XRS 408.00 STRINGER # 58 END FITTING WITH CRACK.CORRECTIVE ACTION: OPENED FUEL TANK PLATE IAW DC8 MM 57-30-0; REMOVED & REPLACED FITTINGS IAW DC8 SRM 51-1-20D AND CLOSED FUEL TANK PLATE IAW DC8 MM 57-30-0. LEAK CHECK ACCOMPLISHED ON FORM JW-48, ZONE 1, PAGE 15, ITEM 1.