Pitot static lines

Tonight I started on the task of running pitot static lines from the wing attach point to the panel. There are two lines that run in from the wing, a pitot line and an AOA line. They will t-off behind the panel with one line going into the back of the AHARS, which is mounted to the back of the PFD, and the other lines running to the G5 backup instrument.

This ribs already have one set of holes running through the seat ribs that is just the right soze for one line. There are other holes too, the outboard ribs have two additional holes for installing gear leg bolts for tri-gear models. The inboard ribs have tooling holes. I enlarged one of three tooling holes on each of three two ribs under the pilot seat, and installed snap bushings. Conveniently, the spar already has two holes I can use to run these lines forward of the spar and into the center tunnel.

I’m planning to install quick connect fittings somewhere under the pilot seat, probably on one of the inboard ribs. I ordered a few fittings from Stein Air and will tackle that when they arrive.

Shavings visible for enlarging the top hole. The angle of the camera makes it look like these holes are closely spaced, but there’s over an inch edge distance.
After using the step drill to enlarge one of the tooling holes. I actually drilled a new hole to offset the center of the enlarged hole, ensuring enough clearance