Log inLog in    RegisterRegister       SearchSearch    ProfileProfile    ContactContact    FAQFAQ    Log in to check your private messagesLog in to check your private messages

Radiotelephony Procedures

Post new topic   Reply to topic    www.TheAirlinePilots.com Forum Index -> IFR and VFR Communications
View previous topic :: View next topic  
Author Message
Site Admin

Joined: 11 Dec 2005
Posts: 1310

PostPosted: Sat Mar 30, 2013 11:38 am    Post subject: Radiotelephony Procedures Reply with quote

Radiotelephony Procedures

Whenever times are given Co-ordinated Universal Time (UTC) is used Usually only the minutes are mentioned.

Aeronautical stations are identified by the name of the location followed by a suffix.

The suffix indicates the type of unit or service provided.

General aviation aircraft and private aircraft use the aircraft registration as the call sign.

Commercial aircraft normally use "telephony designator" approved by ICAO, followed by the flight number.

Provided that no confusion is likely to occur the ground station may abbreviate an aircraft call signs.

From this point onwards the aircraft may also use the abbreviated call sign.

Note however that it is the ATS unit which initiates the abbreviation and never the aircraft.

An aircraft is not allowed to change its type of call-sign or alter its call-sign during flight other than adopting ATC's abbreviation.

If necessary ATC may instruct an aircraft to change its call-sign.

In the initial call to an aircraft control tower and to the approach control unit, an aircraft in the Heavy wake turbulence category (max certificated take-off mass > 136,000 kg) must include the word "HEAVY" immediately after the aircraft call-sign.

Radio Check

The readability of transmissions is classified from 1 to 5 as follows:

1 = Unreadable

2 = Readable now and then

3 = Readable but with difficulty

4 = Readable

5 = Perfectly readable

Test Signals

When a ground station has to make test signals, such signals shall not continue for more than 10 seconds.

They shall be composed of spoken numbers (ONE, TWO, THREE etc) followed by the radio call sign of the station transmitting the test signals.

Such transmissions shall be kept to a minimum.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    www.TheAirlinePilots.com Forum Index -> IFR and VFR Communications All times are GMT
Page 1 of 1

Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum