Project: bbellamy     -     Entry

Mar 20, 2024 4.1 Pitot, Static, AoA and Fuel Lines Category: Fuselage
Completed plan for Pitot Static, AoA connections and hardware.

Decided to use a capped tube for the test ports to keep the minimum number of connections possible (with a test port). I have an assortment of other fittings and can quickly make an adapter to match what an avionics shop might need for test and calibration.

Cut tubing to fit and installed color caps and fittings. Left enough tubing connected to the G5 that I should be able to pull it out enough to disconnect the tubing. Worst case I have to remove the GDU 460 or work from under the panel to reach the G5 tubing connections. Left tubing ends folded over and taped to keep out dust and be a placeholder for the lines to the pitot/AoA tube and static ports. Left long ends with SMC caps as a rough guess for test port connections. Will optimize fit when I install the panel in the fuselage. Sketched schematic (attached below).

The photos show:
IMG_7304 - Color coded connections to the GSU 25.
IMG_7310 - The Static Connections to the Alternate Static Port switch, GSU 25, G5 and the 4 port SMC union - finger points to the union. The other port of the SMC union goes to the SMC Y union which connects to the static port and test port IMG_7312.
IMG_7311 - The pitot connections to the GSU 25, G5 and the 4 port SMC union (near bottom of picture). The other two ports of the SMC union go to the pitot tube and the test port shown in IMG_7313.
IMG_7312 and IMG_7313 show the initial rough position of the Test ports and connections to pitot, AoA and static ports.

Worked more on the Fuel and Brake lines going through the 4 brackets. Drilled another few holes. Bent the formed tubing slightly to improve fit. Researched and added additional grommets to my Aircraft Spruce shopping cart that might be a better fit. Decided to order new F-782B R and L brackets. They will have a small pilot hole instead of the large holes and will be easier to modify and look better when I am done. I am continuing to work with the current brackets to make sure I know how to modify the new ones.


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