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KMD 250 Pilot's Guide
Section 2
FIS Operation
Rev 4 Aug/2007
of the data elements are formatted as those in a METAR report. A TAF
will contain elements in the following order:
1.
Type of report
2.
ICAO station identifier
3.
Date and time of issue
4.
Date and time valid
5.
Wind
6.
Visibility
7.
Weather phenomena
8.
Sky conditions
9.
Wind shear (as required)
10. Forecast weather change indicator
TAFs available within the selected range of the selected area will be dis-
played up to a maximum of 25 reports. These reports are displayed in
an encoded textual format.
NOTE: TAFs older than the forecast validity period are discarded.
Amended or corrected TAFs generated within the issuance period are
provided as soon as they are available, and the previous outdated TAF is
no longer transmitted.
See the section on Understanding Textual Aviation Weather Reports, for
instructions on decoding textual TAFs.
PIREP (VDL ONLY)
A PIREP (Pilot Weather Report) is an observation of conditions at a spe-
cific location or along a specific route. These conditions are reported by
pilots when communications are established with ground facilities such
EFAS, AFSS/FSS, ARTCC or ATC. Abbreviations are the same as in a
METAR. Pilots are encouraged to promptly volunteer these reports. A
PIREP will contain elements in the following order:
1.
Type of message (urgent or routine)
2.
Location in relation to an airport or VHF NAVAID
3.
Time observed
4.
Flight Level (may not always be present)
5.
Type of aircraft (may not always be present)
6.
Sky cover (may not always be present)
7.
Weather conditions (may not always be present)
8.
Temperature (may not always be present)
9.
Wind direction and speed (may not always be present)
Basic Service Weather Products
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