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transition layer
- Definição1
- Transition layer is the airspace between the transition altitude and the transition level. Aircraft descending through the transition layer will set altimeters to local station pressure, while departing aircraft climbing through the transition layer will be using standard altimeter setting (QNE) of 29.92 inches of mercury, 1013.2 millibars, or 1013.2 hectopascals.
- Fonte1
- CRANE, Dale (ed.). Dictionary of aeronautical terms. 2nd ed. Renton: ASA, 1991.
- Definição2
- The airspace between the transition altitude and the transition level.
- Fonte2
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Aircraft operations: flight procedures. 5.ed. Montreal, 2006. Volume 1. (Doc. 8168)
- Nota adicional1
- Aircraft descending through the transition layer will set altimeters to local station pressure, while departing aircraft climbing through the transition layer will be using standard altimeter setting (QNE) of 29.92 inches of Mercury, 1013.2 millibars, or 1013.2 hectopascals.
- Contexto
- While passing through the transition layer, vertical position shall be expressed in terms of: a) flight levels when climbing; and b) altitude when descending.
- Assuming a given QNH value (e.g. 1 012.5 mb) and a given transition altitude (e.g. 1 410 m), the transition level (under the conditions indicated) is FL 50. Should a transition layer of at least 300 m (1 000 ft) be required, then the flight level corresponding to the transition level is 60.
- Subárea1
- Air Navigation
- Português
- camada de transição