Read the text and define five types of altitudes.

ALTITUDE Altitude is vertical distance above some point or level used as a reference. There may be as many kinds of altitude as there are reference levels from which to measure. However, pilots are usually concerned with five types of altitudes: (a) _______________. The altitude of an aircraft above the surface of the terrain. (b) _______________. That altitude read directly from the altimeter (uncorrected) after it is set to the current altimeter setting. (c) _______________. The altitude read from the altimeter when the altimeter setting window is adjusted to 29.92 Hg. (Used for computer solutions for density, altitude, true altitude, true airspeed, etc.) (d) _______________. The true height of the aircraft above sea level - the actual altitude. Airport, terrain, and obstacle elevations found on charts and maps are true altitudes. (e) _______________. This altitude is pressure altitude corrected for non-standard temperature variations. (An important altitude, since it is directly related to the aircraft's take off and climb performance).

density altitude true altitude absolute altitude pressure altitude indicated altitude

Find in the text synonyms for the following.

Sort; ground; straight; present; to set; obstruction; ascent; real; show in; changes.

Give the English equivalents for the following.

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