PLT326: Oxygen System
What code PLT326 covers, why the FAA tests it, and how to study Oxygen System before your checkride.
Recall oxygen system - components / operating principles / characteristics
What this means for your checkride
Supplemental oxygen systems store and deliver oxygen at altitude. Continuous-flow, diluter-demand, and pressure-demand systems differ in how they mix and deliver it, and the mask or cannula is matched to the altitude and system.
Oxygen equipment ties to the altitude regulations and to hypoxia prevention, so the FAA tests the system types and their operating principles.
Pilots think any mask works at any altitude. Cannulas are limited to lower altitudes; higher altitudes require masks, and higher still, pressure-demand systems.
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.