If DME hold is selected, you can still use the VOR course information for ILS or VOR tracking when another frequency is selected.

• A. True
• B. False
• C. Only for ILS
• D. Only for VOR

Answer: (B)

DME hold is a mode that locks in the distance from a VOR/DME station and keeps that readout steady. When you engage DME hold, the navigation system prioritizes maintaining that distance, and the VOR/ILS course guidance isn’t available for tracking if you’ve then selected a different frequency. To use VOR or ILS course information for guidance, you need the VOR/LOC source active and not in DME hold. So, you can’t simultaneously rely on VOR course information for ILS or VOR tracking while DME hold is active with another frequency.