Pitot lines

Posted on by Neal

Tonight I made a fitting to hold two cushion clamps, which will support the pitot and AOA pneumatic lines as they enter the fuselage from the wing.

I also made a corresponding fitting to help guide the Nav antenna on the right side of the fuselage.

I considered installing a bulkhead fitting for the pitot and AOA lines, and eventually decided against that option. I needed some way to prevent the lines chaffing on the aft gear brace assembly, and since the tail dragged doesn’t use part U-01402, I used the two AN5 holes to mount a fitting with two cushion clamps.

I made one of these for each side, the left side for pitot lines and the right side for the Nav antenna.

For the Nav antenna fitting, I epoxied a plastic zip tie holder to the aluminum fitting.

The AN5 holes for the mount
Test fitting the fitting
The fitting after priming and riveting the two pieces together. AN3 bolts with self locking nuts hold the two cushion clamps in position
Final install
Pitot lines routed. In-line push-to-connect connectors ready to receive the lines when the wings are mounted
The lines have enough clearance, for now. Out of caution, I installed spiral wrap to protect the lines
Spiral wrap installed. P = Pitot line, A = AOA line
On the right hand side, the epoxied zip-tie tie down ready to guide the nav antenna over this absticle