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Zenith CruZer & Sonex Logs
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Date:  6-25-2018
Number of Hours:  2.40
Manual Reference:  C75-WA3
Brief Description:  Continued wing prep

I had previously marked the spot for the pitot-static tube assembly. Center-punched it, pilot drilled, then up-drilled to 3/4" using a hole saw. Measured corner distances on the assembly and pilot drilled to #40 for the mounting rivets. Held in position and drilled the first hole. Cleco'd. Gently ensured pitot was square with the airstream and drilled/cleco'd a 2nd hole. Drilled the remaining 2 holes. Updrilled all 4 to #30, final size for A4 rivets. Deburred all.

Re-assembled wing nose skin after re-assuring that the wing was level with no twist.

Ran 3-conductor wire from the wingtop light position down the length of the rear spar. Determined where I wanted the pitot-static lines to exit the wing box, since there were no holes in the main spar in the bay housing the assembly. Drilled two 7/16" holes for the grommets protecting the pitot-static tubes.

Drilled-out some rear spar rivets in order to install the zip-tie holders for the tubes & wires. Installed 14 of them. Used zip-ties to secure the pitot static tubes, wingtip light wire, and fuel sender wire.

Installed wing trailing edges and cleco'd the bottom edge.
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Pitot tube located, drilled, and up-drilled

Pitot tube located, drilled, and up-drilled

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pitot-static lines routed in wing, wingtip light wires secured in position

pitot-static lines routed in wing, wingtip light wires secured in position

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Trailing edges in position

Trailing edges in position

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