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 in field 10
• B. The fix in field 6
• C. The route number in field 6
• D. The altitude in field 7

Answer: (B)

The important idea is that route amendments must anchor the new information to a specific point in the original route. In this type of amendment, field 6 identifies a particular fix that marks the starting point of the segment being changed. Field 10 then carries the updated route information, and it must begin with that same fix so the system or human reader can immediately see exactly where the amendment starts and how the rest of the route should be interpreted from there.

Beginning field 10 with the fix from field 6 ensures continuity and removes ambiguity. If field 10 started with something else—like a separator, the route number, or an altitude—it would disconnect the amendment from the precise point in the existing route, making it easy to misapply or misinterpret the change.

So, the correct starting element for field 10 is the fix listed in field 6, because it provides a clear, consistent anchor for the amendment.