EQPS - Other comms systems

Question 1

What types of voice communication is available to ATCOs? (6)

Answer 1

1. RTF
2. Direct Controller to Controller Communication (Talking)
3. Normal Telephone Communication.
4. Interphone (via Controllers Headset)
5. Intercom system.
6. Mobile telephones.

Question 2

What is ATOTN? (2)

Answer 2

ATOTN - Air Traffic Operational Telephone Network

Telephone network within the AFS (Aeronautical Fixed Service), which is used to contact other units connected to the AFS

(AFS - Aeronautical Fixed Service)

Question 3

What is SELCAL? (2)

Answer 3

SELCAL - Selective Talking

A signalling method which can alert an individual aircraft that a ground station wishes to communicate with it (HF or VHF)

Question 4

If SELCAL is U/S, what must the Pilot do? (1)

Answer 4

Maintain an active listening watch

Question 5

What are ATC sequence of actions if SELCAL is not answered? (3)

Answer 5

1. Two calls on primary frequency
2. Two calls on Secondary frequency

IF both have failed…

3. ATCO should revert to voice calling