What was found
AD 90-23-06: NR 10 LE SLAT TE WEDGE REPLACEMENT, FASTENER SUBSTITUTION. DURING REPLACEMENT OF THE TE WEDGE PER EO 6-71653-3AD AND SRM 57-43-02, FIGURE 202 (REF SB 757-57A0038). SEVERAL EXISTING COVE SKIN-TO-WEDGE ATTACH FASTENERS WERE CSK FOR TENSION HEAD HI-LOCKS. REQUIRED FASTENERS ARE SHEAR HEAD FLUSH FASTENERS. AUTHORIZED USE OF TENSION HEAD HI-LOCKS IN EXISTING OVER-CSK HOLES.