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    <description>Notes from the field. Helicopter flying, training, and the FAA certificates — written from the cockpit by a working CFII.</description>
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    <lastBuildDate>Wed, 29 Apr 2026 12:00:00 +0000</lastBuildDate>

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      <title>The 70° Pen Rule: How to Make Hold Entries Mechanical</title>
      <link>https://rotaryxc.com/blog/70-degree-pen-rule.html</link>
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      <pubDate>Wed, 29 Apr 2026 12:00:00 +0000</pubDate>
      <category>IFR</category>
      <description><![CDATA[DFRATE, the three entry types, and why the cheap pen-and-DG trick beats trying to visualize the geometry under the hood.]]></description>
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      <title>Settling with Power: Why Vuichard Recovery Saves More Altitude</title>
      <link>https://rotaryxc.com/blog/settling-with-power-vuichard.html</link>
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      <pubDate>Mon, 27 Apr 2026 12:00:00 +0000</pubDate>
      <category>Aerodynamics</category>
      <description><![CDATA[Three conditions must be present at the same time. The classic recovery costs altitude you may not have — here's why lateral cyclic and power changes the math.]]></description>
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      <title>Why CFI Endorsements Expire in 90 Days</title>
      <link>https://rotaryxc.com/blog/cfi-endorsements-90-days.html</link>
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      <pubDate>Sat, 25 Apr 2026 12:00:00 +0000</pubDate>
      <category>Regulations</category>
      <description><![CDATA[61.87, 61.93, and the pre-solo endorsement chain. The 90-day window isn't arbitrary — it's the FAA's currency proxy when there's no checkride between you and the student flying alone.]]></description>
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      <title>Reading Cloud Turbulence: A Free Forecast</title>
      <link>https://rotaryxc.com/blog/reading-cloud-turbulence.html</link>
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      <pubDate>Thu, 23 Apr 2026 12:00:00 +0000</pubDate>
      <category>Weather</category>
      <description><![CDATA[Cumulus shape tells you about the air below it. Lenticulars, rotor clouds, and the ragged base — what to read on the way to the mountain so the ride doesn't surprise you.]]></description>
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