Today the steps from 2 to 4 22iS/U-04 was carry out, we used a step drill to enlarge the fwd #30 in the web of F/01217-L & R this was used to perform the step 4. We finished to machine countersink #30 the fwd flange on F/01217-L & R, at the end of the day we started to rivet the bracket to F/01217-L. Also in the step 6 we riveted the nutplates in the pieces F/01217-L & R.