PLT512: Weather Conditions
What code PLT512 covers, why the FAA tests it, and how to study Weather Conditions before your checkride.
Recall weather conditions - temperature / moisture / dewpoint
What this means for your checkride
The relationship between temperature and dew point shows how much moisture the air holds and how close it is to saturation. A small temperature/dew-point spread means high humidity and a good chance of fog, clouds, or precipitation.
The temperature/dew-point spread predicts cloud bases and fog, so the FAA tests how to read it and what a narrowing spread means.
Pilots ignore the spread. When temperature and dew point converge, expect visible moisture, and the cloud base can be estimated from the spread and the standard lapse rate.
Where to study it
A code on your test report is an area of deficiency. An authorized instructor must review it with you and endorse that review before you take the practical test, and the examiner may revisit it during the oral. Study it until you can explain it out loud, not just recognize the answer.