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Altitude: Difference between revisions
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→Density altitude
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==Density altitude== | ==Density altitude== | ||
Altitude in terms of the density of the air. This is important at higher altitudes, with heavy loaded aircraft and with helicopters. | Altitude in terms of the density of the air. This is important with warm weather, at higher altitudes, with heavy loaded aircraft and with helicopters. | ||
==QNH== | ==QNH== | ||
The code [http://en.wikipedia.org/wiki/QNH '''QNH'''] is how a pilot would request the "atmospheric pressure at sea-level". In reply [[ATC]] will repeat QNH followed with the pressure. These days QNH is also transmitted automatically on [[ATIS]]. | The code [http://en.wikipedia.org/wiki/QNH '''QNH'''] is how a pilot would request the "atmospheric pressure at sea-level". In reply [[ATC]] will repeat QNH followed with the pressure. These days QNH is also transmitted automatically on [[ATIS]]. | ||