What was found
WHILE PERFORMING LIGHTED BORESCOPE INSPECTION PROCEDURE AS OUTLINED IN TEXTRON MEL-54-02R3 TO SATISFY AD2017-10-09, A CRACK WAS VISUALLY IDENTIFIED ON THE INBOARD AND OUTBOARD VERTICAL LEGS OF THE LEFT HAND OUTBOARD NACELLE FITTING. THE OUTBOARD CRACK MEASURES APPROXIMATELY .190 INCHES LONG AND THE INBOARD CRACK MEASURES APPROXIMATELY .127 INCHES LONG. BOTH CRACKS ARE CONSISTENT WITH OTHER CRACKS IDENTIFIED USING THIS METHOD. THE LAST LIGHTED BORESCOPE INSPECTION WAS COMPLIED WITH AT 39569.4 HRS. TOTAL TIME. SCHEDULED NDT AS NOTED IN CESSNA SUPPLEMENTAL INSPECTION DOCUMENT (SID) 57-10-16 WILL BE INITIALLY DUE AT 42898.5 TAT. THIS FITTING HAS BEEN REPLACED USING NEW PARTS.