Today I fitted, marked, and pre-drilled the aft left side skin. I then re-fitted the skin and started match-drilling it to the fuselage. I could have kept going, but my air compressor was overheating. I guess the compressor doesn't like it being 97 degrees in the garage either.
Also, before fitting the side skin, I tack-riveted the upper longeron to the bulkheads.
