In a 6-7-10 amendment, field 10 must begin with which element?

• A. The element separator that connects field 6 with the rest of the route
• B. The altitude in field 7
• C. The route name in field 9
• D. The fix in field 6

Answer: (A)

In this route amendment format, the continuation of the route is signaled by a linking element at the start of the next field. Field 10 must begin with the element separator that connects the portion of the route described in the earlier field to the rest of the route. This separator is what lets the navigation system know where the current segment ends and where the subsequent segment begins, keeping the route sequence unambiguous and parsable.

If field 10 started with altitude, a route name, or the fix itself, it would disrupt the intended continuation flow. Altitude belongs with its segment’s specifications, the route name is a label, and the fix is already established in the earlier field; none of those function as the proper continuation marker. The element separator is the correct mechanism to maintain a clean, orderly link between the initial segment and everything that follows.