Systems for Communication Flashcards
Describe SELCAL
SELCAL is a system that alerts an individual aircraft that a ground station wishes to communicate with it. SELCAL signals are transmitted over HF or VHF, consisting of a combination of four preselected audio tones which takes approximately two seconds to transmit.
Each aircraft has a unique SELCAL code which, when transmitted, activates a cockpit call system.
What should happen if the aircraft SELCAL is u/s?
The aircraft should maintain a continuous listening watch on its subsequent flight until SELCAL again becomes available.
Where is the SELCAL code found in the FPL?
Other Information
Describe AFS
Aeronautical Fixed Service
A telecommunication service between specified fixed points provided primarily for the safety of air navigation and for the regular, efficient and economical operation of air services.
Describe AFTN
Aeronautical Fixed Telecommunications Network
A worldwide system of aeronautical fixed circuits provided as part of the AFS for the exchange of messages and/or digital data between stations having compatible equipment.
Describe an AFTN Station
A station forming part of the AFTN network and operating as such under the authority or control of a state.
Each station has its own individual address consisting of 8 letters. The first four are the location identifier, followed by a position qualifier.
Describe the MOTNE
Meteorological Operation Telecommunication Network Europe
Meteorological Operation Channel
A channel of AFS for the exchange of
aeronautical meteorological information
What are the AFTN Priority Messages?
1 - SS
2 - DD or FF
3 - GG or KK
What are SS Messages?
Distress messages and traffic
What are DD Messages?
Urgency messages and traffic
What are FF Messages?
Flight safety messages
Urgent Met Info
Traffic Information
Air Traffic Incident Report
As well as
Filed Flight Plan
Coordination
Supplementary
Control
What are GG Messages?
Meteorological messages
Flight regularity messages
Aeronautical administrative messages
NOTAM messages
Essential Aerodrome
What are KK Messages?
General Aircraft Operating Agency Messages
