Flight Documentation:

Documents containing meteorological information supplied to operators and flight crew members which consists of aerodrome forecasts (TAF) and weather report (METAR/SPECI) of destination and alternate aerodrome, expected significant en-route weather phenomena, charts of upper winds and upper air temperature.

TAF - is a description of the meteorological elements expected at an airport for a forecast period. A TAF consists the following meteorological information: originating aerodrome, TAF validity period, wind direction and speed, visibility, weather, cloud and significant change of weather elements.

METAR - is an aviation routine weather report issued at hourly or half-hourly intervals. It is a description of the meteorological elements observed at an aerodrome at a specific time.

SPECI -  is an aviation special weather report issued when there is significant deterioration or improvement in aerodrome weather conditions, such as significant changes of surface winds, visibility, cloud base height and occurrence of severe weather.

Significant Weather Chart - Expected significant en-route weather phenomena are provided to the flight crew members in chart form.