How long will the HORIZ BAT supply the SFD if normal power sources fail?

The HORIZ BAT, or Horizontal Battery, is designed to provide backup power to essential systems like the Standby Flight Display (SFD) in the event that normal power sources fail. The Falcon 2000LXS is equipped with backup batteries that are engineered to meet operational requirements, including the duration for which they can sustain critical displays.

In this scenario, the correct duration the HORIZ BAT will supply power to the SFD is 160 minutes. This time frame is established based on the battery's capacity and the power demands of the SFD during an emergency situation. Understanding the battery’s performance and the timeframe for which it can maintain functionality is crucial for ensuring safety and operational readiness in the event of a system failure.

The other choices suggest different durations which either exceed or do not meet the specifications set by the aircraft’s systems and engineering standards. Therefore, recognizing the 160-minute supply duration as the norm helps in comprehending the reliability of the backup power systems in maintaining essential display functionality during unexpected events.