Page 72 - UK SERA Standardises European Rules of the Air Regulations (Consolidated) January 2022

SERA - Standardised European Rules of the Air

SERA.14045 GM1 Transmitting technique
BREAK
‘BREAK’ is to be used where there is no clear distinction between the text and other portions of the
message.
SERA.14045 GM2 Transmitting technique
CHECK
‘CHECK’ is not to be used in any other context than ‘examine a system or procedure’. No answer is
normally expected.
SERA.14045 GM3 Transmitting technique
M A IN T A IN
For example, ‘Maintain VFR’.
SERA.14045 GM4 Transmitting technique
OVER
‘OVER’ is not normally used in VHF communications.
SERA.14045 GM5 Transmitting technique
OUT
‘OUT’ is not normally used in VHF communications.
SERA.14045 GM6 Transmitting technique
ROGER
‘ROGER’ is under no circumstances to be used in reply to a question requiring ‘READ BACK’ or a
direct answer in the affirmative (AFFIRM) or negative (NEGATIVE).
SERA.14045 GM7 Transmitting technique
STANDBY
The caller would normally re-establish contact if the delay is lengthy. ‘STANDBY’ is not an approval or
denial.
SERA.14045 GM8 Transmitting technique
UNABLE
‘UNABLE’ is normally followed by a reason.
SERA.14050 Radiotelephony call signs for aircraft
(a) Full call signs:
An aircraft radiotelephony call sign shall be one of the following types:
(1) Type (a) — the characters corresponding to the registration marking of the aircraft;
or
(2) Type (b) — the telephony designator of the aircraft operator, followed by the last four
characters of the registration marking of the aircraft;
(3) Type (c) — the telephony designator of the aircraft operator, followed by the flight
identification.
(b) Abbreviated call signs:
The aircraft radiotelephony call signs shown in point (a), with the exception of Type (c),
may be abbreviated under the circumstances prescribed in point SERA.14055(c).
Abbreviated call signs shall be in the following form:
(1) Type (a) — the first character of the registration and at least the last two characters
of the call sign;
(2) Type (b) — the telephony designator of the aircraft operator, followed by at least the
last two characters of the call sign;
(3) Type (c) — no abbreviated form.
SERA.14050 GM1 Radiotelephony call signs for aircraft
PREFIX TO CALL SIGNS
The name of the aircraft manufacturer or of the aircraft model may be used as a radiotelephony prefix
to the Type (a) call sign.
SERA.14050 GM2 Radiotelephony call signs for aircraft
EXAMPLES OF FULL AND ABBREVIATED CALL SIGNS

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