PSA Airlines Canadair Regional Jet Systems (PSA-CRJ) Practice Exam

In the event of a bleed air failure, which component typically would receive priority for bleed air supply?

1. Cabin pressurization

2. Engine starts

3. Wing anti-ice

4. APU cooling

The correct answer is: Cabin pressurization

In the event of a bleed air failure, cabin pressurization typically receives priority for bleed air supply. This is crucial because maintaining a safe and comfortable cabin environment is essential for passenger safety and comfort during flight. Cabin pressurization ensures that passengers and crew have adequate oxygen levels and that pressure changes are managed effectively, especially during changes in altitude. Other systems that rely on bleed air, such as engine starts, wing anti-ice, and APU cooling, while important, are secondary to the immediate safety and comfort needs of the passengers in the cabin. Prioritizing cabin pressurization allows the flight crew to focus on maintaining a safe environment before addressing other operational needs. In essence, the prioritization of bleed air supply is structured around keeping the cabin environment stable and ensuring that the safety of all onboard is not compromised.