PLT330: Physiological Factors
What code PLT330 covers, why the FAA tests it, and how to study Physiological Factors before your checkride.
Recall physiological factors - cause / effects of hypoxia
What this means for your checkride
Hypoxia is a shortage of oxygen to the body and brain, most often from altitude. The danger is that it degrades judgment and vision before you feel it, so the symptoms are easy to miss until performance has already dropped.
Hypoxia drives the supplemental-oxygen rules and is a core aeromedical topic, so the FAA tests its causes, symptoms, and the altitudes where it matters.
Pilots expect an obvious warning. Hypoxia often brings a false sense of well-being, which is why the oxygen rules are altitude and time based, not symptom based.
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.