Air Traffic Services Surveillance

What is the horizontal radar separation minimum set by ICAO unless specified otherwise by the relevant ATS authority?

• A3.5NM
• B8 NM
• C5.0NM

In what way can aircraft be identified using ADS-B for identification purposes?

• AAsking him to sqwuak assigned mode A code C.
• BDirect recognition of the aircraft identification in an ADS-B label.
• CRecognition of an assigned discrete code, the setting of which has been verified.

An aircraft is deemed to be at its assigned altitude if the SSR mode C level information shows it is within:

• A+/-500ft of the assigned level in non RVSM airspace
• B+/-200ft of the assigned level in RVSM airspace
• C+/-300ft of the assigned level in RVSM airspace