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time of projection
If an altitude, track or speed change is predicted to
occur between the aircraft’s current position and the
projected intent point, additional information would be
provided in an intermediate intent block as follows:
distance from current point to change point
track from current point to change point
altitude at change point
predicted time to change point
h) Extended projected profile (in response to an
interrogation from the ground system)
next waypoint
estimated altitude at next waypoint
estimated time at next waypoint
(next + 1) waypoint
estimated altitude at (next + 1) waypoint
estimated time at (next + 1) waypoint
(next + 2) waypoint
estimated altitude at (next + 2) waypoint
estimated time at (next + 2) waypoint
[repeated for up to (next + 128) waypoints]
Note. — The specifications for the elements in the
meteorological information data block, including their ranges
and resolutions, are shown in Appendix 3 to Annex 3.
4.11.4.2 The basic ADS data block shall be required
from all ADS-equipped aircraft. Remaining ADS data blocks
shall be included as necessary. In addition to any requirements
concerning its transmission for ATS purposes, data block f)
(Meteorological information) shall be transmitted in accordance
with Annex 3, 5.4.1. ADS emergency and/or urgency
reports shall include the emergency and/or urgency status in
addition to the relevant ADS report information.
4-12 Air Traffic Management (PANS-ATM)
1/11/01
4.12 REPORTING OF OPERATIONAL AND
METEOROLOGICAL INFORMATION
4.12.1 General
4.12.1.1 When operational and/or routine meteorological
information is to be reported by an aircraft en route at points
or times where position reports are required in accordance
with 4.11.1.1 and 4.11.1.2, the position report shall be given in
the form of a routine air-report. Special aircraft observations
shall be reported as special air-reports. All air-reports shall be
reported as soon as is practicable.
4.12.1.2 When ADS is being applied, routine air-reports
shall be made in accordance with 4.11.4.2.
4.12.2 Contents of routine air-reports
4.12.2.1 Routine air-reports transmitted by voice or data
link, when ADS is not being applied, shall give information
relating to such of the following elements as are necessary for
compliance with 4.12.2.2:
Section 1.— Position information:
1) aircraft identification
2) position
3) time
4) flight level or altitude
5) next position and time over
6) ensuing significant point
Section 2.— Operational information:
7) estimated time of arrival
8) endurance
Section 3.— Meteorological information:
9) air temperature
10) wind direction
11) wind speed
12) turbulence
13) aircraft icing
14) humidity (if available).
4.12.2.2 Section 1 of the air-report is obligatory, except
that elements (5) and (6) thereof may be omitted when so
prescribed on the basis of regional air navigation agreements.
Section 2 of the air-report, or a portion thereof, shall only be
transmitted when so requested by the operator or a designated
representative, or when deemed necessary by the pilot-incommand.
Section 3 of the air-report shall be transmitted in
accordance with Annex 3, 5.4.2.
Note.— While element (4), flight level or altitude, may, in
accordance with 4.11.2.1, be omitted from the contents of a
position report transmitted by radiotelephony when so
prescribed on the basis of regional air navigation agreements,
that element may not be omitted from Section 1 of an airreport.
4.12.3 Contents of special air-reports
4.12.3.1 Special air-reports shall be made by all aircraft
whenever the following conditions are encountered or
observed:
a) severe turbulence; or
b) severe icing; or
c) severe mountain wave; or
d) thunderstorms, without hail that are obscured,
embedded, widespread or in squall-lines; or
e) thunderstorms, with hail that are obscured, embedded,
widespread or in squall-lines; or
f) heavy dust storm or heavy sandstorm; or
g) volcanic ash cloud; or
h) pre-eruption volcanic activity or a volcanic eruption.
Note.— Pre-eruption volcanic activity in this context
means unusual and/or increasing volcanic activity which could
presage a volcanic eruption.
In addition, in the case of transonic and supersonic flight:
i) moderate turbulence; or
j) hail; or
k) cumulonimbus clouds.
4.12.3.2 When air-ground data link is used, special airreports
shall contain the following elements:
　
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