CAP 413
Radiotelephony Manual
Chapter 4 Page 42
7
Aerodrome Information
7.1
Meteorological Conditions
Meteorological information in the form of reports, forecasts or warnings is made
available to pilots using the aeronautical mobile service either by broadcast (e.g.
VOLMET) or by means of specific transmissions from ground personnel to pilots.
Standard meteorological abbreviations and terms should be used and the information
should be transmitted slowly and enunciated clearly in order that the recipient may
record such data as is necessary.
NOTE:
Cloud may also be reported as follows:
'Scattered at five hundred feet, scattered cumulonimbus at one thousand
feet, broken at two thousand five hundred feet.'
In the above example 'scattered' equates to 3 or 4 Octas and 'broken'
equates to 5–7 Octas.
Full details of meteorological information are contained in UK AIP GEN section.
Information on military aerodromes and weather information is in Chapter 10
paragraph 3.3.
7.2
Voice Weather Broadcast (VOLMET) UK
7.2.1
Meteorological aerodrome reports for certain aerodromes are broadcast on specified
frequencies. The callsign of the VOLMET, frequency, operating hours, aerodromes
contained within the group, and contents are published in the UK AIP.
7.2.2
The content of a VOLMET broadcast is as follows:
a) Aerodrome identification (e.g. Stourton)
b) Surface wind
c) Visibility (Note 1)
d) RVR (if applicable) (Note 1)
e) Weather
f) Cloud (Note 1)
g) Temperature
h) Dewpoint
i) QNH
j) Trend (if applicable)
NOTES:
1
Non essential words such as 'surface wind', 'visibility' etc. are not spoken.
2
'SNOCLO' is used to indicate that aerodrome is unusable for take-off/landings
due to heavy snow on runways or snow clearance.
3
All broadcasts are in English.
G-CD, Borton Tower, 0950 weather
surface wind 360 degrees 5 knots
visibility 30 km. Nil weather, 2 oktas
2500 feet temperature plus 10, dew
point plus 3, QNH 1010
QNH 1010, G-CD
31 March 2011
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