What was found
INSP TYPE:C, LT WING NR 4 SLAT OTBD NOSE SKIN RIVET HOLE FOUND CRACKED. LT WING NR 4 SLAT L/E OTBD AT OSS641.9 NOSE SKIN REPAIRED IAW RS R57-00-36739 AND EO B767-5750-38009, ORG MATL IS 7075T6-0.063", CRACK LENGTH IS 0.1530", DAMAGED CUTOUT IS 0.500" DIA. THIS IS CLASSIFIED AS A PERMANENT REPAIR WITH MATL 7075T6-0.063" AS FREEZE PLUG. REPAIR SIZE IS 0.503" DIA.