Earth vision

from Wikipedia, the free encyclopedia
There is still a view of the earth, possibly not further back when the cloud cover closes there

Sight of the surface ( English ground in sight ) means in the flyer language that from the cockpit of a flying aircraft , the surface visible underneath so not by clouds or fog is covered.

In a broader sense - analogous to flight visibility - under earth vision , the visibility in the direction of the ground or the flight altitude from which the ground becomes visible during descent. Is something quite different, however, the bottom view ( English ground visibility ), whereby the horizontal Visibility on a airfield is referred to.

Significance for aviation

The ground view is of particular importance in visual flight , where the ground, especially the visible horizon, is the most important point of reference for maintaining the correct flight position . Navigation based purely on sight using ground features is also not possible without a view of the earth. During flights at low altitudes, such as when approaching a landing , visibility of the earth is also a prerequisite for reliably maintaining safety distances from aviation obstacles.

In certain airspace classes , visual flights may only be carried out with a view of the earth (see Visual Meteorological Conditions ).

Individual evidence

  1. ↑ Jochen Hinkelbein, Susanne Berger: Exam preparation for the private pilot license . 1st edition. tape 2 : Radiotelephony certificate with limited validity . aeromedConsult, Hördt 2007, ISBN 978-3-00-021004-4 , p. 415 .
  2. ↑ Klaus L. Schulte, Volker Ermert: Meteorology - A learning script for pilots according to European guidelines . 1st edition. KLS Publishing, Cologne 2008, ISBN 978-3-9811404-9-1 , p. 247 .
  3. ↑ Weather dictionary - Earth view. (No longer available online.) In: deutscherwetterdienst.de. German Weather Service , formerly in the original ; Retrieved January 8, 2012 .  ( Page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. @1@ 2Template: Toter Link / www.deutscherwetterdienst.de  
  4. ↑ ICAO : Annex 2 to the Convention on International Civil Aviation - Rules of the Air , 10th Edition, July 2005, Section 3.9 VMC visibility and distance from cloud minima