If a line segment exceeds 100 NM, what happens before transmission to AMP?

• A. The segment is truncated to 100 NM
• B. The segment is extended to 150 NM
• C. The segment is split into two segments
• D. The segment is discarded

Answer: (A)

In Link 16, line segments that describe geometry or routing have a fixed maximum length for a single message sent to the AMP. That limit is 100 nautical miles. If a segment would exceed that, it is truncated at 100 NM before transmission. This keeps the data within the AMP’s field size and preserves predictable update timing. If more of the line is needed, it must be sent as additional segments in subsequent transmissions rather than extending the current one.