Weather forecasting

There are very many met. stations all over the country. They are of great help for aviation. There is a met. ground at every airport too, which is equipped with special instruments. These grounds have to be located not far from the landing and take off areas at a distance of about 300 m. from the end of the runway. At the airports which have no landing systems these met. stations are situated not far from the dispatch office. But if it is difficult to watch the horizontal visibility from this point, then the observations must be made from another place which is the most suitable one for observations. These met. observations are made every 30 minutes at the airports; but sometimes when the weather is dangerous for safe flights the observers give met. information every 15 minutes. All flights must be provided with met. information about the actual weather and weather forecast.

The chief pilot studies the data obtained during preflight preparation. Besides, the pilot receives met. report while in flight. 20-30 minutes before entering the aerodrome area the controller gives full information about the weather for the aerodrome to the plane. For the planes approaching for landing met. report is constantly given with the help of a tape-recorder or by a controller.

Short-flight forecasts are provided by continuous Transcribed Weather Broadcasts and the Pilot's Automatic Telephone Weather Answering Service.

For longer flights a telephone call or visit to the nearest Flight Service Station or Weather Bureau Airport is necessary.

After receiving weather information either for short or long-range flights the pilot considers carefully if weather conditions are suitable for his flight. If not, it is better to delay the flight.

At many terminals information helpful to landing and take off is continuously broadcast on a navigational aid frequency. Prior to descent the pilot requests current weather for terminal area as well as field conditions at destination.

Дата добавления: 2015-07-11