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Flight Crew Guide – cockpit reference codex

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Today’s featured wiki:

  • Vertical Reference Systems

    Vertical Reference Systems Definitions 1.1 Vertical Reference System A vertical (height) reference system can be defined by only two parameters: a point with a known elevation from which vertical differences are calculated, and the reference surface. The different height systems are briefly explained below. 1.2 Ellipsoidal Heights The ellipsoid, which… Read more…