Just had one of those bugger it events!
The plans on page 29-09 say in step 8 countersink the outboard holes except as referenced in fig 4.
And I did!
As the eyes wandered back down to the areas on the skin that are not to be dimpled some of those holes will be riveted to the lower LONGERON which are now countersunk.
Possibly not a part throw away by reverting to 426 in that area.
Amendment to the Fig-4 on 29-09 by adding the lower LONGERON would be something worth looking at.
The plans on page 29-09 say in step 8 countersink the outboard holes except as referenced in fig 4.
And I did!
As the eyes wandered back down to the areas on the skin that are not to be dimpled some of those holes will be riveted to the lower LONGERON which are now countersunk.
Possibly not a part throw away by reverting to 426 in that area.
Amendment to the Fig-4 on 29-09 by adding the lower LONGERON would be something worth looking at.