Publication: Magyar Közlöny
Issue: MK-2009-104 (Year: 2009, Number: 104)
Era: 2004-2010
Section: 
Paragraph Index: 690

c) when set to a pressure of 1 013.2 hPa, may be used to indicate flight levels. Note 2.— The terms “height” and “altitude”, used in Note 1 above, indicate altimetric rather than geometric heights and altitudes. Geodesic distance. The shortest distance between any two points on a mathematically defined ellipsoidal surface. Geodetic datum. A minimum set of parameters required to define location and orientation of the local reference system with respect to the global reference system/frame. Geoid. The equipotential surface in the gravity field of the Earth which coincides with the undisturbed mean sea level (MSL) extended continuously through the continents. Note.— The geoid is irregular in shape because of local gravitational disturbances (wind tides, salinity, current, etc.) and the direction of gravity is perpendicular to the geoid at every point. Geoid undulation. The distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid. Note.— In respect to the World Geodetic System — 1984 (WGS-84) defined ellipsoid, the difference between the WGS-84 ellipsoidal height and orthometric height represents WGS-84 geoid undulation. Glide path. A descent profile determined for vertical guidance during a final approach. Gregorian calendar. Calendar in general use; first introduced in 1582 to define a year that more closely approximates the tropical year than the Julian calendar (ISO 19108*). Note.C In the Gregorian calendar, common years have 365 days and leap years 366 days divided into twelve sequential months. Height. The vertical distance of a level, a point or an object considered as a point, measured from a specified datum. Helicopter stand. An aircraft stand which provides for parking a helicopter and, where air taxiing operations are contemplated, the helicopter touchdown and lift-off. Heliport. An aerodrome or a defined area on a structure intended to be used wholly or in part for the arrival, departure and surface movement of helicopters. Holding procedure. A predetermined manoeuvre which keeps an aircraft within a specified airspace while awaiting further clearance. Hot spot. A location on an aerodrome movement area with a history or potential risk of collision or runway incursion, and where heightened attention by pilots/drivers is necessary. Human Factors principles. Principles which apply to aeronautical design, certification, training, operations and maintenance and which seek safe interface between the human and other system components by proper consideration to human performance. Hypsometric tints. A succession of shades or colour gradations used to depict ranges of elevation. Initial approach segment. That segment of an instrument approach procedure between the initial approach fix and the intermediate approach fix or, where applicable, the final approach fix or point. Instrument approach procedure. A series of predetermined manoeuvres by reference to flight instruments with specified protection from obstacles from the initial approach fix, or where applicable, from the beginning of a defined arrival route to a point from which a landing can be Annex 4 — Aeronautical Charts Chapter 1 1/11/01 1-4 22/11/07 No. 54 completed and thereafter, if a landing is not completed, to a position at which holding or en-route obstacle clearance criteria apply. Intermediate approach segment. That segment of an instrument approach procedure between either the intermediate approach fix and the final approach fix or point, or between the end of a reversal, racetrack or dead reckoning track procedure and the final approach fix or point, as appropriate. Intermediate holding position. A designated position intended for traffic control at which taxiing aircraft and vehicles shall stop and hold until further cleared to proceed, when so instructed by the aerodrome control tower. Isogonal. A line on a map or chart on which all points have the same magnetic variation for a specified epoch. Isogriv. A line on a map or chart which joins points of equal angular difference between the North of the navigation grid and Magnetic North. Landing area. That part of a movement area intended for the landing or take-off of aircraft. Landing direction indicator. A device to indicate visually the direction currently designated for landing and for take-off. Level. A generic term relating to the vertical position of an aircraft in flight and meaning variously, height, altitude or flight level. Logon address. A specified code used for data link logon to an ATS unit. Magnetic variation. The angular difference between True North and Magnetic North. Note.— The value given indicates whether the angular difference is East or West of True North. Manoeuvring area. That part of an aerodrome to be used for the take-off, landing and taxiing of aircraft, excluding aprons. Marking. A symbol or group of symbols displayed on the surface of the movement area in order to convey aeronautical information. Metadata. Data about data (ISO 19115*). Note.— Data that describes and documents data. Minimum en-route altitude (MEA). The altitude for an enroute segment that provides adequate reception of relevant navigation facilities and ATS communications, complies with the airspace structure and provides the required obstacle clearance. Minimum obstacle clearance altitude (MOCA). The minimum altitude for a defined segment of flight that provides the required obstacle clearance. Minimum sector altitude. The lowest altitude which may be used which will provide a minimum clearance of 300 m (1 000 ft) above all objects located in an area contained within a sector of a circle of 46 km (25 NM) radius centred on a radio aid to navigation. Missed approach point (MAPt). That point in an instrument approach procedure at or before which the prescribed missed approach procedure must be initiated in order to ensure that the minimum obstacle clearance is not infringed. Missed approach procedure. The procedure to be followed if the approach cannot be continued. Movement area. That part of an aerodrome to be used for the take-off, landing and taxiing of aircraft, consisting of the manoeuvring area and the apron(s). Obstacle. All fixed (whether temporary or permanent) and mobile objects, or parts thereof, that are located on an area intended for the surface movement of aircraft or that extend above a defined surface intended to protect aircraft in flight. Note.— The term obstacle is used in this Annex solely for the purpose of specifying the charting of objects that are considered a potential hazard to the safe passage of aircraft in the type of operation for which the individual chart series is designed. Obstacle clearance altitude (OCA) or obstacle clearance height (OCH). The lowest altitude or the lowest height above the elevation of the relevant runway threshold or the aerodrome elevation as applicable, used in establishing compliance with appropriate obstacle clearance criteria. Note 1.— Obstacle clearance altitude is referenced to mean sea level and obstacle clearance height is referenced to the threshold elevation or in the case of non-precision approaches to the aerodrome elevation or the threshold elevation if that is more than 2 m (7 ft) below the aerodrome elevation. An obstacle clearance height for a circling approach is referenced to the aerodrome elevation. Note 2.— For convenience when both expressions are used they may be written in the form “obstacle clearance altitude/height” and abbreviated “OCA/H”. Note 3.— See Procedures for Air Navigation Services — Aircraft Operations (Doc 8168), Volume I, Part I, Section 4, Chapter 1, 1.5, and Volume II, Part I, Section 4, Chapter 5, 5.4, for specific applications of this definition. Obstacle free zone (OFZ). The airspace above the inner approach surface, inner transitional surfaces, and balked Chapter 1 Annex 4 — Aeronautical Charts 1-5 1/11/01 22/11/07 No. 54 landing surface and that portion of the strip bounded by these surfaces, which is not penetrated by any fixed obstacle other than a low-mass and frangibly mounted one required for air navigation purposes. Orthometric height. Height of a point related to the geoid, generally presented as an MSL elevation. Point light. A luminous signal appearing without perceptible length. Portrayal. Presentation of information to humans (ISO 19117*). Position (geographical). Set of coordinates (latitude and longitude) referenced to the mathematical reference ellipsoid which define the position of a point on the surface of the Earth. Precision approach procedure. An instrument approach procedure utilizing azimuth and glide path information provided by ILS or PAR. Procedure altitude/height. A specified altitude/height flown operationally at or above the minimum altitude/height and established to accommodate a stabilized descent at a prescribed descent gradient/angle in the intermediate/final approach segment. Procedure turn. A manoeuvre in which a turn is made away from a designated track followed by a turn in the opposite direction to permit the aircraft to intercept and proceed along the reciprocal of the designated track. Note 1.— Procedure turns are designated “left” or “right” according to the direction of the initial turn. Note 2.— Procedure turns may be designated as being made either in level flight or while descending, according to the circumstances of each individual procedure. Prohibited area. An airspace of defined dimensions, above the land areas or territorial waters of a State, within which the flight of aircraft is prohibited. Relief. The inequalities in elevation of the surface of the Earth represented on aeronautical charts by contours, hypsometric tints, shading or spot elevations. Reporting point. A specified geographical location in relation to which the position of an aircraft can be reported. Required navigation performance (RNP). A statement of the navigation performance necessary for operation within a defined airspace. Note.— Navigation performance and requirements are defined for a particular RNP type and/or application. Resolution. A number of units or digits to which a measured or calculated value is expressed and used. Restricted area. An airspace of defined dimensions, above the land areas or territorial waters of a State, within which the flight of aircraft is restricted in accordance with certain specified conditions. Reversal procedure. A procedure designed to enable aircraft to reverse direction during the initial approach segment of an instrument approach procedure. The sequence may include procedure turns or base turns. RNP type. A containment value expressed as a distance in nautical miles from the intended position within which flights would be for at least 95 per cent of the total flying time. Example.— RNP 4 represents a navigation accuracy of plus or minus 7.4 km (4 NM) on a 95 per cent containment basis. Runway. A defined rectangular area on a land aerodrome prepared for the landing and take-off of aircraft. Runway-holding position. A designated position intended to protect a runway, an obstacle limitation surface, or an ILS/MLS critical/sensitive area at which taxiing aircraft and vehicles shall stop and hold, unless otherwise authorized by the aerodrome control tower. Note.— In radiotelephony phraseologies, the expression “holding point” is used to designate the runway-holding position. Runway strip. A defined area including the runway and stopway, if provided, intended:

Source: https://magyarkozlony.hu/hivatalos-lapok/bfd0d67db9f223889f627fd618725b03526630e2/dokumentumok/d5234fd7275da04023366ab8a434989962a31bdf/letoltes