FAA Powerplant Written Practice Test

According to the FAA at 40°F, what are the pressure limits for a fire extinguisher container?

1. 300 psi minimum and 450 maximum

2. 448 psi minimum and 598 maximum

3. 500 psi minimum and 650 maximum

4. 350 psi minimum and 500 maximum

The correct answer is: 448 psi minimum and 598 maximum

The correct pressure limits for a fire extinguisher container at 40°F, as specified by the FAA, are set at a minimum of 448 psi and a maximum of 598 psi. These limits ensure that the fire extinguisher can adequately operate and maintain the necessary pressure to effectively expel its contents when needed. The specific pressure range accounts for changes in temperature, ensuring that the extinguisher remains functional and safe, minimizing the risk of rupture at higher temperatures while still being effective at cooler temperatures. Standards are in place to ensure the integrity and reliability of fire extinguishers, considering the differing pressure responses to various environmental conditions. The values provided are aligned with industry standards regarding pressurized containers, which are designed to perform optimally within these specified limits. Understanding and adhering to these limits is crucial for safe aircraft operation and emergency preparedness.