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Siccome ogni volta che ho un dubbio su questo argomento ci metto ore a ritrovarlo lo posto qui sul blog cosi’ so dove trovarlo e gia’ che ci sono spero sia utile anche a qualcun’altro
AIRCRAFT APPROACH CATEGORY (USA TERPS)
A grouping of aircraft based on a speed of Vref, if specified, or if Vref is not specified, 1.3 VS0 at the maximum certificated landing weight. Vref, VS0, and the maximum certificated landing weight are those values as established for the aircraft by the certification authority of the country of registry. An aircraft shall fit in only one category. If it is necessary to maneuver at speeds in excess of the upper limit of a speed range for a category, the minimums for the ext higher category should be used. For example, an aircraft which falls in Category A, but is circling to land at a speed in excess of 91 knots, should use the approach Category B minimums when circling to land. The categories are as follows:
- Category A—Speed less than 91 knots.
- Category B — Speed 91 knots or more but less than 121 knots.
- Category C—Speed 121 knots or more but less than 141 knots.
- Category D—Speed 141 knots or more but less than 166 knots.
- Category E—Speed 166 knots or more.
Category E contains only certain Military Aircraft.
AIRCRAFT APPROACH CATEGORY (ICAO)
The following ICAO table indicates the specified range of handling speeds (IAS in Knots) for each category of aircraft to perform the maneuvers specified. These speed ranges have been assumed for use in calculating airspace and obstacle clearance for each procedure.
(click the image to enlarge)
Vat —Speed at threshold based on 1.3 times stall speed in the landing configuration at maximum certificated landing mass.
*Maximum speed for reversal and racetrack procedures.
Category E contains only certain Military Aircraft.
NOTE: The speed table applies to the new ICAO approach procedures which are identifiable by the OCA(H) figures and the PANS OPS notation on the lower left corner of the approach chart. Old ICAO approach procedures show an OCL instead of OCA(H). Deviations are listed in the Air Traffic Control section.
Fonte:http://simcharts.jeppesen.com/help/GlossaryA-C.htm
