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Andrews Web Site
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Date: 8-30-2023
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Number of Hours: 2.00
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Manual Reference:
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Brief Description: Planning for fuel tube routing, wiring, and riveti
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While I had the wing off, I started planning for where the fuel feed tube would go in the stub wing. I see that Dick used an Aeroquip flex hose in this location. I presume he went with flexible hoses so that he could move them out of the way when installing the wing to prevent interference with access to the wing attach bolts and landing gear leg. However, since I am going to be reinstalling the fuel pick-up tube location, I decided that I can use a 45-degree exit fitting and route the tube through the forward rib lightning hole to allow installation of a solid feed tube without interfering with wing bolt access. In the images below, I am using welding rod to simulate the path of the proposed fuel feed tube and am making sure that it can be installed through the stub wing access hole after riveting. At this time, I also started thinking about the riveting sequence that would be used to close the bottom of the wing. I plan to rivet the top skin first since the flap and aileron reinforcements drive riveting them in place before the lower skin is installed. Some of the rivets on the lower skin will be very difficult to reach no matter which way I peel the skin back, so I will most likely have to use a few cherrymax rivets on this skin. The two images below show what kind of rivets I plan to use and when. While I was thinking about future events, I went ahead and planned the wire routing paths for wingtip position lights, landing lights and fuel sensors. The bushings for these paths were also installed.
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Planning the fuel tube routing path
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Proposed riveting sequence
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Wiring bushings installed
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