FAA Powerplant Written Practice Test

What is the primary role of the oil breather pressurization system in turbine engines?

1. To monitor oil temperature

2. To direct oil back to the sump

3. To ensure a proper oil spray pattern

4. To increase oil pressure

The correct answer is: To ensure a proper oil spray pattern

The primary role of the oil breather pressurization system in turbine engines is to ensure a proper oil spray pattern. This system facilitates the distribution of oil throughout various components of the engine. By pressurizing the oil breather, it assists in delivering oil in a fine mist or spray, which is crucial for effective lubrication. Proper lubrication ensures that moving parts operate smoothly and reduces wear, which is vital for the longevity and reliability of the engine. While other aspects of engine performance, such as oil temperature monitoring, returning oil to the sump, and maintaining oil pressure, are important, they do not directly relate to the specific function of the oil breather pressurization system. This system is specifically designed to optimize the distribution and spray pattern of oil, ensuring comprehensive coverage for lubrication and cooling of the engine components.