Today step 9 was performed 24iS / U-02 in which countersink was made the C-01213A, this operation was performed by holding the part where it has to be installed to prevent it from moving and verifying if the intact rivets enter correctly. Also, step 10 24iS / U-02 was carried out, in this step they were countersin the five holes on the forward face of the F-1231A-FL & -FR, in this step it is necessary to carry out the countersink with the correct depth and that above these holes a piece will be placed on them. step 11, 12, 13 was carried out in which the part in which the piece F-01231F-2 was attached to the part F-1231A-AR and aft F-1231E and then a single Match-drill # 43 was made in the central hole that passes through these pieces. the piece was removed this piece was made final drill # 30 only to the pieces F-1231A-AR and aft F-1231E in the hole that was previously # 43. Both parts were deburred and finally in step 13 tap # 4-40 was made the switch mounting hole in the F-01231F-2 only.
