What was found
CRACKED LOWER SURFACE SLAT 4 NOSE SKIN, LT WING. NO FOUND ALLOWABLE DAMAGE ON SRM. REMOVED NR 4 SLAT SKIN, ACCESS PANEL 522DB, AND FASTENERS IAW SRM 51-40-02. ROTOTEST INSPECTION ACCOMPLISHED IAW NDT MANUAL PART 6 51-00-00, PROCEDURE 16. CRACK INDICATIONS WERE FOUND (3 E/A) CRACK 1 ON HOLE AT NOSE SKIN LAYER ONLY, CRACK 2 ON HOLE AT RIB LAYER ONLY CRACK 3 ON HOLE NOSE SKIN LAYER ONLY. REPLACED SLAT 4 DUE TO NO FOUND ALLOWABLE DAMAGE IN SRM.