An aircraft can rely on conventional radio navigation along a route segment even when it is outside the coverage of the navigation aid being used.

### Why this is right Conventional radio navigation requires the aircraft to be within the coverage of the aid being used. If a direct segment lacks coverage, the route may need to pass through another navigation aid. ### The concept Ground-based aids do not provide usable guidance everywhere. Their coverage constrains which routes and procedures can be used. This is why the material describes routing through an intermediate aid when a direct route would leave a coverage gap. Aircraft operating in remote or oceanic areas may lack ground-aid coverage, making conventional radio navigation unavailable for those portions. ### The other options - **True**: this would imply that ground-aid signals remain usable beyond their coverage, which contradicts the stated limitation. ### Terms - **Coverage**: the area within which a navigation aid’s signal can be used for navigation. - **Conventional radio navigation**: navigation using ground-based radio aids. ### Remember A planned radio route must stay within the usable coverage of the aids it depends on.