What was found
(CAN) DURING A POST FLIGHT CHECK, DISTORTION OF RIVETS HEADS WAS NOTICED ON THE LEADING EDGE AT AROUND HS 98. A TOTAL OF 24 RIVETS PER SIDE WERE SHOWING HEAD DISTORTION. SECTION AFFECTED IS THE CENTER LEADING EDGE ASS`Y, P/N 4557400003-009/010 LEARJET 75 SRM REQUIRES REPLACEMENT OF RIVET WHENEVER RIVET HEAD DISTORTION IS NOTED. ENGINEERING WAS CONTACTED AND A LETTER OF NO TECHNICAL OBJECTION TO CONTINUED NORMAL AIRCRAFT OPERATIONS FOR A MAXIMUM OF 25 HOURS WAS ISSUED. TECHNICIANS HAVE BEEN DISPATCHED TO OUR FACILITY TO START THE RIVETS REPLACEMENT PROCESS. ALSO STARTED THE INVESTIGATION TO DETERMINE THE CAUSE OF THESE RIVETS DISTORTION. PRELIMINARY FINDING LEADS TO POSSIBLY INCORRECT RIVETS INSTALLED, AD RIVET INSTALLED INSTEAD OF E RIVET.