Title: Describe aircraft pressurization.
Course: Aircraft Pilot Training II (20053-II) > Section: Operating the Aircraft

Description should include the following:

- Crew and passengers use oxygen systems, in conjunction with pressurization systems, to prevent hypoxia.
- Regulations require, at a minimum, flight crews have and use supplemental oxygen after 30 minutes exposure to cabin pressure altitudes between 12,500 and 14,000 feet.
- Use of supplemental oxygen is required immediately upon exposure to cabin pressure altitudes above 14,000 feet.
- Every aircraft occupant, above 15,000 feet cabin pressure altitude, must have supplemental oxygen. However, based on a person’s physical characteristics and condition, a person may feel the effects of oxygen deprivation at much lower altitudes.

PLT134