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Maximum elevation figure (MEF) is a type of visual flight rule (VFR) information that indicates the elevation of the highest geographical feature within a GEOREF quadrangle area. It is of interest to pilots, who want to be aware of the highest mountain peaks and tall towers nearby, so that they can fly above them to avoid controlled flight into terrain. ("Features" includes terrain, trees, towers, and other obstacles.) Much like the minimum safe altitude (MSA) used for flight under instrument flight rules, the MEF includes a margin for aircraft clearance above the terrain and altimeter error.

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  • Sicherheitsflughöhe (de)
  • Maximum elevation figure (en)
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  • Die Sicherheitsflughöhe (engl. minimum sector altitude, MSA) gibt dem Piloten an, in welcher Flughöhe er gerade noch sicher fliegen kann, ohne mit Bodenobjekten (Häuser, Türme, Berge, …) zu kollidieren. In manchen Publikationen findet sich auch die falsche Übersetzung "minimum safe altitude". Es wird dabei bereits ein Sicherheitsabstand von 1.000 ft, bei höherem Gelände 2.000 ft einkalkuliert. Wird die Sicherheitsflughöhe auf der Flugkarte beispielsweise mit 1.500 ft angegeben, so sind die Erhebungen in dieser Gegend höchstens 500 ft hoch. (de)
  • Maximum elevation figure (MEF) is a type of visual flight rule (VFR) information that indicates the elevation of the highest geographical feature within a GEOREF quadrangle area. It is of interest to pilots, who want to be aware of the highest mountain peaks and tall towers nearby, so that they can fly above them to avoid controlled flight into terrain. ("Features" includes terrain, trees, towers, and other obstacles.) Much like the minimum safe altitude (MSA) used for flight under instrument flight rules, the MEF includes a margin for aircraft clearance above the terrain and altimeter error. (en)
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  • Die Sicherheitsflughöhe (engl. minimum sector altitude, MSA) gibt dem Piloten an, in welcher Flughöhe er gerade noch sicher fliegen kann, ohne mit Bodenobjekten (Häuser, Türme, Berge, …) zu kollidieren. In manchen Publikationen findet sich auch die falsche Übersetzung "minimum safe altitude". Es wird dabei bereits ein Sicherheitsabstand von 1.000 ft, bei höherem Gelände 2.000 ft einkalkuliert. Wird die Sicherheitsflughöhe auf der Flugkarte beispielsweise mit 1.500 ft angegeben, so sind die Erhebungen in dieser Gegend höchstens 500 ft hoch. Die Sicherheitsflughöhe wird in Bezug auf die ICAO-Standardatmosphäre angegeben (barometrische Höhenmessung nach QNH). Der Pilot muss also die lokalen Wetterbedingungen berücksichtigen und gegebenenfalls einen Korrekturwert eintragen. (de)
  • Maximum elevation figure (MEF) is a type of visual flight rule (VFR) information that indicates the elevation of the highest geographical feature within a GEOREF quadrangle area. It is of interest to pilots, who want to be aware of the highest mountain peaks and tall towers nearby, so that they can fly above them to avoid controlled flight into terrain. ("Features" includes terrain, trees, towers, and other obstacles.) Much like the minimum safe altitude (MSA) used for flight under instrument flight rules, the MEF includes a margin for aircraft clearance above the terrain and altimeter error. In a VFR flight, the MEF is commonly referred to as a "quadrantal altitude" (not to be confused with an IFR ). (en)
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