曝光台 注意防骗
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U M W/U
98 Instruction to turn immediately left
or right as specified on to the
specified heading.
IMMEDIATELY TURN
(direction) HEADING
(degrees)
D H W/U
99 Notification that a clearance may be
issued for the aircraft to fly the
specified procedure.
EXPECT (procedure name) L L R
Message intent/use Message element URG ALRT RESP
100 Notification that a speed instruction
may be issued to be effective at the
specified time.
AT (time) EXPECT (speed) L L R
101 Notification that a speed instruction
may be issued to be effective at the
specified position.
AT (position) EXPECT
(speed)
L L R
102 Notification that a speed instruction
may be issued to be effective at the
specified level.
AT (level) EXPECT (speed) L L R
Message intent/use Message element URG ALRT RESP
Appendix 5 A5-11
1/11/01
103 Notification that a speed range
instruction may be issued to be
effective at the specified time.
AT (time) EXPECT (speed)
TO (speed)
L L R
104 Notification that a speed range
instruction may be issued to be
effective at the specified position.
AT (position) EXPECT
(speed) TO (speed)
L L R
105 Notification that a speed range
instruction may be issued to be
effective at the specified level.
AT (level) EXPECT (speed)
TO (speed)
L L R
106 Instruction that the specified speed is
to be maintained.
MAINTAIN (speed) N M W/U
188 Instruction that after passing the
specified position the specified speed
is to be maintained.
AFTER PASSING (position)
MAINTAIN (speed)
N M W/U
107 Instruction that the present speed is
to be maintained.
MAINTAIN PRESENT
SPEED
N M W/U
108 Instruction that the specified speed or
a greater speed is to be maintained.
MAINTAIN (speed) OR
GREATER
N M W/U
109 Instruction that the specified speed or
a lesser speed is to be maintained.
MAINTAIN (speed) OR
LESS
N M W/U
110 Instruction that a speed within the
specified range is to be maintained.
MAINTAIN (speed) TO
(speed)
N M W/U
111 Instruction that the present speed is
to be increased to the specified speed
and maintained until further advised.
INCREASE SPEED TO
(speed)
N M W/U
112 Instruction that the present speed is
to be increased to the specified speed
or greater, and maintained at or
above the specified speed until
further advised.
INCREASE SPEED TO
(speed) OR GREATER
N M W/U
113 Instruction that the present speed is
to be reduced to the specified speed
and maintained until further advised.
REDUCE SPEED TO
(speed)
N M W/U
114 Instruction that the present speed is
to be reduced to the specified speed
or less and maintained at or below
the specified speed until further
advised.
REDUCE SPEED TO
(speed) OR LESS
N M W/U
115 Instruction that the specified speed is
not to be exceeded.
DO NOT EXCEED (speed) N M W/U
116 Notification that the aircraft need no
longer comply with the previously
issued speed restriction.
RESUME NORMAL SPEED N M W/U
189 Instruction that the present speed is
to be changed to the specified speed.
ADJUST SPEED TO (speed) N M W/U
222 Notification that the aircraft may
keep its preferred speed without
restriction.
NO SPEED RESTRICTION L L R
Message intent/use Message element URG ALRT RESP
A5-12 Air Traffic Management (PANS-ATM)
1/11/01
Note.— Wherever the variable “level” is specified, the message can specify either a single level or a vertical range, i.e. block
level.
Table A5-7. Contact/monitor/surveillance requests (uplink)
223 Instruction to reduce present speed to
the minimum safe approach speed.
REDUCE TO MINIMUM
APPROACH SPEED
N M W/U
Message intent/use Message element URG ALRT RESP
117 Instruction that the ATS unit with the
specified ATS unit name is to be
contacted on the specified frequency.
CONTACT (unit name)
(frequency)
N M W/U
118 Instruction that at the specified
position the ATS unit with the
specified ATS unit name is to be
contacted on the specified frequency.
AT (position) CONTACT
(unit name) (frequency)
N M W/U
119 Instruction that at the specified time
the ATS unit with the specified ATS
unit name is to be contacted on the
specified frequency.
AT (time) CONTACT (unit
name) (frequency)
N M W/U
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