Section 2, Chapter 2 - Radar Separation Standards

Question 1

What are the radar separation minima for different types of targets near Belfast and Crowhill?

Answer 1

Less than 40 NM from ARP:

• Belfast PSR and SSR: 3 NM
• Belfast PSR only: 3 NM
• Belfast SSR only: 5 NM
• Crowhill ORRD SSR only: 5 NM

Less than 60 NM but more than 40 NM from ARP, inside CAS, and below FL195:

• All targets: 5 NM

Question 2

What are the conditions for reducing longitudinal separation on reciprocal tracks using ATS surveillance system derived information?

Answer 2

• Communication and Control: Both aircraft must be in communication with and under the control of EGAA APS (same controller and frequency).
• Surveillance System: ATS surveillance system derived information can be used to determine that the aircraft have passed each other.
• Horizontal Separation: There is no requirement to ensure minimum horizontal separation before reducing minimum vertical separation.
• Wake Turbulence: Greater minima might be required for wake turbulence separation purposes.