Talk:Transition altitude

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[edit] Merge with Transition Altitude

An article on this topic existed at Transition Altitude (note the caps). I copied the text over from there onto this page, ovewriting the existing article as the other one seemed to have better style. To be just, here is the previous version of this article:

Transition altitude is the altitude above which aircraft set their altimeter to standard pressure (29.92 in/Hg). This allows them to have a single setting while cruising, rather than constantly adjusting to local conditions. In the United States, the transition altitude is FL180 (18,000ft about MSL at standard pressure). Altitudes above the transition altitude are expressed as Flight Levels and abbreviated FLxxx, in hundreds of feet above Mean Sea Level at standard pressure. Below the transition altitude, altitude is above field level au current pressure and expressed as the whole number of feet (as in 17,000 - one-seven thousand).

When the altimeter reads below standard pressure, FL180 is not available, as spacing between 17,000 and FL180 is in reality less than 1000ft.

The other article now redirects to this page. Canwolf 04:36, 13 July 2006 (UTC)