FAA Powerplant Written Practice Test

Which component ensures that a pneumatic starter receives the appropriate air flow during operation?

1. The isolation valve

2. The pressure-regulating and shutoff valve

3. The main fuel valve

4. The bypass valve

The correct answer is: The pressure-regulating and shutoff valve

The pressure-regulating and shutoff valve is the component that ensures a pneumatic starter receives the appropriate air flow during operation. This valve effectively regulates the pressure and flow of air supplied to the starter, which is crucial for its operation. By maintaining the correct pressure levels, the valve helps optimize the performance of the pneumatic starter, ensuring that it operates efficiently and reliably during engine start-up. Proper airflow and pressure are essential because insufficient or excessive pressure can lead to inadequate engine starting performance or potential damage to the starter system. Therefore, the role of the pressure-regulating and shutoff valve is critical in providing a stable and controlled environment for the pneumatic starter to function as intended.