So I was sitting with another CFI candidate who I study with a couple of times a week. After teaching a lesson to each, we started to discuss pressure altitude and how density and temperature effect said pressure altitude. My first question to him was "sitting at home with a telephone in hand, how will he determine the current PA at the airport" He answered accordingly with acquiring the current altimeter reading and doing a little math. OK, great. So this is were we started getting a bit lost in space. I live in Washington state where we seldom have tripple didged temps. Last week we experienced record highs of 107. Our airport is about 25' msl. Our Density altitued was nearly 3,500' WOW! awsome.
Now as I understand it, presure varies directly with density and inversly with temperature. So if pressure and density are directly related, which stands to reason, the less densley packed the air, the lighter, hense less pressure there will be in that 1" column of air. So again, why when my density altitude was 3,500' and I'm at sea level is my altimiter setting not 26.42? Confuseing!!!
:dunno:I hope I'm makeing sence
Now as I understand it, presure varies directly with density and inversly with temperature. So if pressure and density are directly related, which stands to reason, the less densley packed the air, the lighter, hense less pressure there will be in that 1" column of air. So again, why when my density altitude was 3,500' and I'm at sea level is my altimiter setting not 26.42? Confuseing!!!
![Confused :confused: :confused:](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f615.png)