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Altitude: Difference between revisions
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Elevation
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QNH is a vital tool to use a height map of an area, hence it is vital during approach of an airfield. There have been dramatic accidents where pilots were flying using [[#Pressure altitude]] (during descend) while they should have used the [[#True altitude]] making the height map of the area useless. In bad visibility mountains have not been noticed and the ground was higher as expected. | QNH is a vital tool to use a height map of an area, hence it is vital during approach of an airfield. There have been dramatic accidents where pilots were flying using [[#Pressure altitude]] (during descend) while they should have used the [[#True altitude]] making the height map of the area useless. In bad visibility mountains have not been noticed and the ground was higher as expected. | ||
==Elevation== | |||
The height of the runway ([[AMSL]]) is normally called Elevation of the runway. It is vital to know the elevation before descending towards it. There are a few places to discover the elevation. | |||
*[[Atlas]] provides an accurate height map. One needs to interpret the colours on the map to know the elevation. For [[IFR]] and flight planning Atlas is not suited. | |||
*[[MPMap]] is an on-line tool for FlightGear that provides accurate information about runways including the elevation. | |||
*[[Airport Diagram Generator]] will create a PDF file, an accurate map of the airfield. It includes the elevation. | |||
*Websites that are used for real flight planning. A few problems, the Real runway is not always 100% the same as the FlightGear runway, not all FlightGear runways can be found on those websites (The FlightGear database is more complete). | |||
It is very unfortunate that [[Kelpie]] doesn't provide this information. | |||
==Additional information== | ==Additional information== | ||