How long will the backup flight instrument and UHF tuning be powered by the auxiliary battery?

The backup flight instrument and UHF tuning will be powered by the auxiliary battery for a duration of 30 minutes. This information is crucial for understanding the operational limitations of the aircraft's systems during an emergency or when the main power sources are compromised. Having a specific timeframe for the auxiliary battery's backup capabilities allows pilots and crew to plan their actions effectively in case of a power failure, ensuring they have enough time to manage the situation and take necessary precautions.

Understanding this duration is essential for flight safety and operational readiness, as it impacts how pilots manage their flight instruments and communications during critical phases of flight. The auxiliary battery is designed to provide a limited amount of power, and knowing that it lasts for 30 minutes offers a clear guideline for decision-making in-flight scenarios. The other options present alternative durations that do not align with the documented capacity of the auxiliary battery, making them less relevant in this context.