What was found
INSPECTION TYPE:C LT WING UPPER L/E PANEL SUPPORT RIB FOUND CRACKED AT WS 1230 JUST BEHIND NR 5 VC FLAP O/B DRIVE I/B. CRACKED LENGTH 1/4 INCH. LT WING UPPER L/E PANEL SUPPORT RIB AT WS 1230 JUST BEHIND NR 5 VC FLAP O/B DRIVE I/B AREA REPAIRED AS PER HX RS R57-41-35666 DETAIL VISUAL INSPECTION THE AFFECTED AREA AT C-CHECK INTERVALS, NOT TO EXCEED 18 MONTHS PER HX RS R57-41-35666 IS REQUIRED AND AS PER UPS EO B747-5740-25561-A.