Section 21 - Flaps (nearly finished right flap); Section 13 - Main Spar (finished right main spar); Section 14 - Wing Ribs (right wing ribs well underway)

Good progress was made this past week, even with taking a few days for a nice vacation and birthday celebration with my in-laws. A few details below (this post is short due to time constraints):

Riveted top skin to spar and ribs (right flap):

Clecoed bottom skin to right flap, and checked angle of hinges (<0.1deg between them):

Riveted bottom skin to right flap and nose skin to nose ribs:

Blind-riveted nose skin to nose ribs:

RIGHT SPAR!  Started match-drilling lower j-channels:

Match-drilled upper j-channels:

Flipped and finished match-drilling lower j-channels:

Riveted right fuel tank attach nutplates:

Countersunk all holes in both spar flanges:

Masked both flanges:

Other side:

Primed all countersunk holes, both sides:

Attached bellcrank brackets:

Straightened, fluted, final-drilled, deburred holes, deburred edges, and dimpled all 14 ribs.  This took a LOT of time this week:

Fitted torque tube bracket:

Match-drilled flap hinge attach brackets to the 3rd and 8th ribs (counted from the inboard side):

Torque tube bracket, deburred, reassembled, and ready to be riveted:

Hinge brackets, cleaned and ready for priming:

Inboard rib (non-alclad), cleaned and ready for priming: