Van's RV-9A in Aurora

The Big Picture

The Big Picture
Flying! 8/28/2011

Monday, July 20, 2009

This posting is for yesterday, Sunday, July 19.
4.5 hrs
Started out fine tuning the thickness of the 904 spar spacers.
Fit 904A to center section.
Final dril 904A flange/976 skin.
Fit 904H parts and match drill.
Match drill 915 ribs.

Countersink 976 skin/904 flanges. Decided to countersink all of the holes. The FAQ from Van's builders help section said "it would be fine". I didn't like the idea of dimpling the 904 flanges, even though they're only .040. The countersinks do go just a fraction into the spar flange, but this procedure leaves the inside nice and smooth.

Remove 976 skin.
Final drill all 905 rib holes.
Remove baggage ribs.