Hi fellow wiki editors!

To help newly registered users get more familiar with the wiki (and maybe older users too) there is now a {{Welcome to the wiki}} template. Have a look at it and feel free to add it to new users discussion pages (and perhaps your own).

I have tried to keep the template short, but meaningful. /Johan G

Mean Sea Level

From FlightGear wiki
Jump to: navigation, search

Mean sea level (MSL) is a measure of the average height of the ocean's surface (such as the halfway point between the mean high tide and the mean low tide) and plays an extremely important role in aviation, where standard sea level pressure is used as the measurement reference of altitude at flight levels.

Above Mean Sea Level

The altitude measured in reference with the Mean Sea Level (opposite (AGL)).