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  • 2-1-1. ATC SERVICE

    interpretation 10
    1. The primary purpose of the ATC system is to prevent a collision involving aircraft operating in the system.
    2. In addition to its primary purpose, the ATC system also:
      1. Provides a safe, orderly, and expeditious flow of air traffic.
      2. Supports National Security and Homeland Defense missions.
    3. The ATC system must provide certain additional services to the extent permitted. The provision of additional services is not optional on the part of the controller, but rather required when the work situation permits. It is recognized that the provision of these services may be precluded by various factors, including, but not limited to:
      1. Volume of traffic.
      2. Frequency congestion.
      3. Quality of surveillance.
      4. Controller workload.
      5. Higher priority duties.
      6. The physical inability to scan and detect situations falling in this category.
    4. Controllers must provide air traffic control service in accordance with the procedures and minima in this order, except when one or more of the following conditions exists:
      1. A deviation is necessary to conform with ICAO Documents, National Rules of the Air, or special agreements where the U.S. provides air traffic control service in airspace outside the U.S. and its possessions or:
      2. NOTE: Pilots are required to abide by CFRs or other applicable regulations regardless of the application of any procedure or minima in this order.

      3. Other procedures/minima are prescribed in a letter of agreement, FAA directive, or a military document, or:
      4. NOTE: These procedures may include altitude reservations, air refueling, fighter interceptor operations, law enforcement, etc.

      5. A deviation is necessary to assist an aircraft when an emergency has been declared.
    5. Air Traffic Control services are not provided for model aircraft operating in the NAS or to any UAS operating in the NAS at or below 400ft AGL.
      • NOTE:
      • This does not prohibit ATC from providing services to civil and public UAS.
      • The provisions of this paragraph apply to model aircraft operating at any altitude. For all other UAS, this paragraph applies only to those UAS operating entirely at or below 400ft AGL.
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