Concord special parts

The three reinforcing strips are 34 holes in length - Each strip is fitted with 12 x M3 threaded RivNuts (Shouldered inserts - Part 1) riveted into the strips in the following hole positions for fitting with the flange uppermost. - 1,2,4,6,9,14,17,21,24,27,29,31 - Left to right from the front of the aircraft