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TEMPERATURE MINUS (degrees Celsius)
10 Wind direction WIND (number) DEGREES
or CALM
11 Wind speed (number) KILOMETRES PER HOUR or KNOTS
12 Turbulence TURBULENCE LIGHT
TURBULENCE MODERATE
TURBULENCE SEVERE
13 Aircraft icing ICING LIGHT
ICING MODERATE
ICING SEVERE
14 Humidity (if available) HUMIDITY (per cent)
15 Phenomenon encountered or observed,
prompting a special air-report:
• Severe turbulence
• Severe icing
• Severe mountainwave
• Thunderstorms without hail
• Thunderstorms with hail
• Heavy dust/sandstorm
• Volcanic ash cloud
• Pre-eruption volcanic activity
or volcanic eruption
SST:
• Moderate turbulence
• Hail
• Cumulonimbus clouds
TURBULENCE SEVERE
ICING SEVERE
MOUNTAINWAVE SEVERE
THUNDERSTORMS
THUNDERSTORMS WITH HAIL
DUSTSTORM or SANDSTORM HEAVY
VOLCANIC ASH CLOUD
PRE-ERUPTION VOLCANIC ACTIVITY or VOLCANIC
ERUPTION
TURBULENCE MODERATE
HAIL
CB CLOUDS
Appendix 1 A1-3
1/11/01
1. Routine air-reports
1.1 Section 1 is obligatory, although Items 5 and 6 thereof may be omitted
when prescribed in Regional Supplementary Procedures; Section 2 shall be
added, in whole or in part, only when so requested by the operator or its
designated representative, or when deemed necessary by the pilot-incommand;
Section 3 shall be added in accordance with Annex 3 and the
Regional Supplementary Procedures, Part 3 — Meteorology.
1.2 Section 3 shall include all Items 9 to 13 and Item 14, if available.
2. Special air-reports
2.1 Special air-reports shall be made whenever any of the phenomena
listed under Item 15 are observed or encountered. Items 1 to 4 of Section 1 and
the appropriate phenomenon specified in Section 3, Item 15, are required from
all aircraft. The phenomena listed under “SST” shall be reported only by
supersonic transport at transonic and supersonic cruising levels.
2.2 In the case of special air-reports containing information on volcanic
activity, a post-flight report shall be made on the volcanic activity reporting form
(Model VAR). All elements which are observed shall be recorded and indicated
respectively in the appropriate places on the form Model VAR.
2.3 Special air-reports shall be made as soon as practicable after a
phenomenon calling for a special air-report has been observed.
2.4 If a phenomenon warranting the making of a special air-report is
observed at or near the time or place where a routine air-report is to be made,
a special air-report shall be made instead.
3. Detailed reporting instructions
3.1 Items of an air-report shall be reported in the order in which they are
listed in the model AIREP/AIREP SPECIAL form.
— MESSAGE TYPE DESIGNATOR. Report “SPECIAL” for a special airreport.
Section 1
Item 1 — AIRCRAFT IDENTIFICATION. Report the aircraft radiotelephony
callsign as prescribed in Annex 10, Chapter 5.
Item 2 — POSITION. Report position in latitude (degrees as 2 numerics or
degrees and minutes as 4 numerics, followed by “North” or “South”) and
longitude (degrees as 3 numerics or degrees and minutes as 5 numerics,
followed by “East” or “West”), or as a significant point identified by a coded
designator (2 to 5 characters), or as a significant point followed by magnetic
bearing (3 numerics) and distance in nautical miles from the point (e.g.
“4620North07805West”, “4620North07800West”, “4600North07800West”, LN
(“LIMA NOVEMBER”), “MAY”, “HADDY” or “DUB 180 DEGREES 40 MILES”).
Precede significant point by “ABEAM”, if applicable.
Item 3 — TIME. Report time in hours and minutes UTC (4 numerics) unless
reporting time in minutes past the hour (2 numerics) is prescribed on the basis
of regional air navigation agreements. The time reported must be the actual
time of the aircraft at the position and not the time of origination or transmission
of the report. Time shall always be reported in hours and minutes UTC when
making a special air-report.
Item 4 — FLIGHT LEVEL OR ALTITUDE. Report flight level by 3 numerics
(e.g. “FLIGHT LEVEL 310”), when on standard pressure altimeter setting.
Report altitude in metres followed by “METRES” or in feet followed by “FEET”,
when on QNH. Report “CLIMBING” (followed by the level) when climbing, or
“DESCENDING” (followed by the level) when descending, to a new level after
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