Airframe · Lesson 19 of 40
Environmental Systems
How aircraft keep people breathing and comfortable: oxygen systems and their servicing, cabin pressurization and its controls, air cycle and vapor cycle air conditioning, bleed air, exhaust shroud and combustion heaters, and cooling for instruments and avionics.
12 min read
Last reviewed
Part of A&P Complete
This lesson is in the full course
- Explain why supplemental oxygen and pressurization are needed and how carbon monoxide endangers occupants
- Describe gaseous and chemical oxygen systems and the safe way to inspect, leak test, fill and purge them
- Explain how cabin pressure is produced, controlled and limited, and calculate cabin differential pressure
- Describe how air cycle and vapor cycle systems cool the cabin and how a vapor cycle system is serviced
- Describe bleed air, exhaust shroud and combustion heaters, their inspections and avionics cooling