<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>jcalvinowens</author><text>It is not necessary to empirically determine a specific airplane&amp;#x27;s stall speed in order to operate it safely. It&amp;#x27;s not required in the US, we just use the number the manufacturer publishes.&lt;p&gt;It&amp;#x27;s normal for airplanes of the same model to fly differently: I fly a little fleet of six Citabrias, and their stall characteristics are radically different. You&amp;#x27;d expect more uniformity from a modern aluminum airplane, but still: nobody should be flying an airplane like this so close to the edge the exact stall speed needs to be known numerically within one knot.&lt;p&gt;The 40lbs of gas I burn flying for an hour decreases the stall speed by more than 1mph on those Citabrias I fly.&lt;p&gt;EDIT: I was mistaken, this isn&amp;#x27;t a requirement in Europe either.</text><parent_chain></parent_chain></comment><story><title>The unstallable plane that stalled</title><url>https://fearoflanding.com/accidents/accident-reports/the-unstallable-plane-that-stalled/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>talkingtab</author><text>Non sequitur from non-pilot: I was once in Duluth, MN in the bitter cold and watched a Cessna with skis (for landing on the frozen lakes of the Boundary Waters) land at the airport. It was the utterly bewildering to see how slowly it was going in the air. And how little distance it took to stop. Short Landing Kit I assume. I&amp;#x27;ve seen ducks and geese come into land on lakes at higher speeds!</text><parent_chain></parent_chain></comment><story><title>The unstallable plane that stalled</title><url>https://fearoflanding.com/accidents/accident-reports/the-unstallable-plane-that-stalled/</url></story>