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4. TRANSFER OF COMMUNICATIONS

An aircraft will normally be advised by the appropriate aeronautical station to
change from one frequency to another.

“SE-GPD contact Copenhagen Control 129,345”

“Copenhagen Control 129,345 SE-GPD”

Pilot’s Choice. If the pilot wishes to change frequency he should notify the

change as appropriate.
“Roskilde Approach, SE-GPD changing to Cophenhagen Control 133,3”

The ICAO Annex10 also has the following advice. “When establishing initial
contact, or when leaving, a VHF frequency, an aircraft station shall transmit such

information as may be prescribed by the appropriate authority”.

After a call has been made to an aeronautical station, a period of at least 10

seconds should elapse before a second call is made.

Stations having a requirement to transmit information to all stations likely to
intercept the call should preface the transmission with general call ‘ALL STATIONS’,

followed by the identification of the calling station. No reply is expected unless

individual stations are subsequently called to acknowledge receipt.

4.1 READBACK
Readback of Clearances

A clearance may vary from a detailed description of a route and levels to be

flown or it could be the name of a standard route such as a Standard Instrument
Departure (known as “SID”). Clearances should be passed slowly to enable pilots

to write down the information. If possible a clearance is passed before start up

and certainly not when a pilot is engaged in manouvring his aircraft; of course,
multi-crew aircraft do not have a problem here.

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