If a paired track exists and we have separation responsibility, what must be maintained?

• A. Maintain a full data block for all aircraft in sector 66
• B. Use LDBs for all aircraft
• C. Do nothing
• D. Only for aircraft on frequency

Answer: (A)

When you have separation responsibility on a paired track, you must maintain a full data block for every aircraft in your sector. Having complete data for each target—position, altitude, speed, heading or track, flight identification, and relevant routing—keeps you informed about the exact state of both tracks and any potential conflicts. In a paired-track situation, the two tracks influence each other, so knowing where every aircraft is and what it’s doing is essential to preserve safe separation.

If you only label aircraft or focus only on those on frequency, you lose visibility of other aircraft still within your airspace, which could lead to missed conflicts or late coordination. Doing nothing obviously fails to provide the necessary situational awareness. Therefore, maintaining full data blocks for all aircraft in the sector is the correct practice.