The two batteries are capable of supplying emergency power for approximately how many minutes?

The two batteries on the PSA Airlines Canadair Regional Jet are designed to provide emergency power for approximately 30 minutes. This is crucial for maintaining essential systems and allowing for safe operation in the event of a failure in the primary electrical power source. The 30-minute capacity ensures that critical avionics, essential flight instruments, and communication systems remain operational long enough for the crew to manage the situation, assess the need for a landing, and communicate with air traffic control. This limited time frame promotes efficiency and safety by ensuring that power is available during critical moments without the risk of over-discharging the batteries, which could impair their function in subsequent emergencies.