Finished left rear spar prep, started on right: 6.4 hours

Riveted all left rear spar components together. I had a two tricky rivets that had to be redone but everything else went well.

After that I started prepping the rear spar components.

 

Riveting the aileron bracket doubler:

 

Inboard spar doublers (extra holes are where ribs and other parts are riveted during assembly):

 

Ready to trim right rear spar doublers:

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