FSS use of an ATS surveillance display (AAS/RAAS)

FSS surveillance display (AAS/RAAS): some FSSs use an ATS surveillance display to sharpen traffic information (RAC 1.5.8).

FSS may:

• Instruct "SQUAWK IDENT" or assign an SSR code.
• Add "NO CONTROL SERVICE AVAILABLE, THIS IS AN ADVISORY SERVICE".
• Pass traffic by clock position or geographic location.

Still only advisory:

• Specialists may stop monitoring the display without notice.
• No notice when identification is lost.
• No vectors, no conflict resolution.
• Visual lookout stays on the pilot at all times.

Practice