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Kupe's Zodiac 650B
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Date:  2-24-2020
Number of Hours:  3.00
Manual Reference:  
Brief Description:  Add Naca Vent to Lower Cowl

Added a NACA vent to the lower engine cowl. At my October inspection, my TC suggested I hook up the center hose attach point of the heater muff to fresh, outside air. I had initially left it open inside the engine compartment at the suggestion of Zenith when I asked them about it, but my TC convinced me it was a small amount of work for a little peace of mind.

The job consisted of:
- Creating a template of the vent opening which I traced off of the existing cabin vent holes.
- Tracing the template onto the cowl.
- Dremmeling out the hole, filing and then sanding it.
- Drilling out the flange of the vent hose attachment for riveting.
- Match drilling the lower cowl to the vent hose attachment for riveting.
- Riveting the vent hose attachment to the lower cowl.
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Planned placement of NACA vent on right side of lower engine cowl.

Planned placement of NACA vent on right side of lower engine cowl.

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On the work table after cutting, cleaning up and riveting cool air vent to cowl.

On the work table after cutting, cleaning up and riveting cool air vent to cowl.

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Back on the airplane with Sceet hose routed from heat muff to NACA vent.

Back on the airplane with Sceet hose routed from heat muff to NACA vent.

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