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Date: 08-22-2025
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Number of Hours: 2.00
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Short Description: Heated Pitot Controller Attachment (20-2)
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I thought about several different locations for the controller, but ended up where I had seen some others. I like the idea of being able to remove it fairly easily in case I need access to the lightening hole to attach the skin. It actually fits a little nice on the rib hole closest to the spar, but I was afraid that I would have trouble getting the screws in and out when it was so close to the spar. I ended up one hole aft. I bought some aluminum strips from the aviation section at HD. 1/16” thick is a little over kill, but I wanted to countersink the rivets for the nut plates. I clamped everything in place and drilled through using the controller holes to guide it to the correct location. You have to be a little careful when drilling since the rib is curved and wants to make the drill bit walk. I then final sized and deburred all the holes, then reattached the controller in the spot I wanted. I then drilled the holes through the rib and the backer plate to hold the bracket in place with LP4-3 rivets. Once I deburred everything and primed all the parts, I set the nut plates, attached the bracket to the rib and the controller to the backer plate. It’s seems pretty solid and plenty of room to run the wires. I did have to purchase some longer screws to reach though all the parts and still have some threads showing (AN515-8R10).
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Backer plate drilled, primed and nut plates set (25-141)
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Controller attached (25-144)
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Backer plate and controller attached (25-146)
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