Which unit in an aircraft is used to point toward a Non-Directional Beacon (NDB)?

Which unit in an aircraft is used to point toward a Non-Directional Beacon (NDB)?

• A. Vertical Speed Indicator (VSI)
• B. Heading Indicator (HI)
• C. Automatic Direction Finder (ADF)
• D. Global Positioning System (GPS)

Answer: (C)

The Automatic Direction Finder (ADF) is the correct answer because it is specifically designed to receive signals from Non-Directional Beacons (NDB). The ADF uses these signals to determine the direction to a beacon relative to the aircraft's position, allowing the pilot to navigate towards the NDB by tuning the ADF to the appropriate frequency. When properly set up, the ADF points directly toward the NDB, which is a crucial function for navigation, particularly in low visibility situations or when other navigation aids are not available. In contrast, the Vertical Speed Indicator (VSI) measures the rate of climb or descent and has no role in direction finding or navigation related to beacons. The Heading Indicator (HI) displays the current heading of the aircraft but does not directly provide navigational information related to NDBs. The Global Positioning System (GPS) is a modern navigation tool that provides precise location data based on satellite signals but does not directly interact with NDBs in the same manner that the ADF does.

The Automatic Direction Finder (ADF) is the correct answer because it is specifically designed to receive signals from Non-Directional Beacons (NDB). The ADF uses these signals to determine the direction to a beacon relative to the aircraft's position, allowing the pilot to navigate towards the NDB by tuning the ADF to the appropriate frequency. When properly set up, the ADF points directly toward the NDB, which is a crucial function for navigation, particularly in low visibility situations or when other navigation aids are not available.

In contrast, the Vertical Speed Indicator (VSI) measures the rate of climb or descent and has no role in direction finding or navigation related to beacons. The Heading Indicator (HI) displays the current heading of the aircraft but does not directly provide navigational information related to NDBs. The Global Positioning System (GPS) is a modern navigation tool that provides precise location data based on satellite signals but does not directly interact with NDBs in the same manner that the ADF does.