StressedOut
Well Known Member
Section 13, page 13-03 has a note preceding Step 4 that says "Use a temporary screw in the nutplates to ensure proper alignment." Looking forward in the plans where the fuel tanks are attached, it calls out an AN509-8R8 screw. However, that screw will not fit in the hole as it's just a little bit undersized. Without opening up that hole I can't use a screw to hold the nutplate.
Elsewhere in the plans I see that the proper size drill for a #8 screw is a #19 drill. I'm scanning the plans to see if a #19 hole is drilled later on but it's a bit of a slog even using PDF find. There doesn't appear to be a step in Section 13 that calls out final drilling the #8 screw holes (or for that matter the #6 screw holes for the access panels).
Am I correct is assuming that this final drill of the #8 screws is done later in the plans? If so, am I going to mess something up if I do the final drill earlier than the plans state?
One alternative I can think of for alignment of the screw hole is to use a awl. I'm a bit concerned that if you final drill the screw hole with the nutplate already installed you run the risk of damaging the nutplate.
So to summarize here are my questions:
1. Should I final drill the #8 screw holes to #19 at Section 13?
2. Is there a reason the screw hole final drill is done later?
Elsewhere in the plans I see that the proper size drill for a #8 screw is a #19 drill. I'm scanning the plans to see if a #19 hole is drilled later on but it's a bit of a slog even using PDF find. There doesn't appear to be a step in Section 13 that calls out final drilling the #8 screw holes (or for that matter the #6 screw holes for the access panels).
Am I correct is assuming that this final drill of the #8 screws is done later in the plans? If so, am I going to mess something up if I do the final drill earlier than the plans state?
One alternative I can think of for alignment of the screw hole is to use a awl. I'm a bit concerned that if you final drill the screw hole with the nutplate already installed you run the risk of damaging the nutplate.
So to summarize here are my questions:
1. Should I final drill the #8 screw holes to #19 at Section 13?
2. Is there a reason the screw hole final drill is done later?