40-03, step 8

[DonFromTX]

I am installing a matching landing light on my other wing. It would seem to be a mistake in step 8 of page 40-03. After dimpling the wing skin and the lens, the instructions say to also dimple the lens backing strips AND the nutplates!
This would seem to be contrary to good practice, since the dimples in the skin and the lens are more than enough, the additional dimpling would actually seem to weaken the assembly and certainly accomplish nothing. Comments anyone?.

 

[rvbuilder2002]

It says to "dimple the nut plates and backing strips at all nutplate attach locations"

That means dimple the rivet holes that attach the nutplates.
Not the screw holes.

BTW, you don't dimple the screw holes in the lens, those have to be machine countersunk.

 

[DonFromTX]

OK, now it all makes sense, my brain was not yet awake this morning! Of course I mis spoke about c/s of the lens. Thanks for clearing up that brain snag.