gaca_gov_sa · executive_regulation · processed · 260 chunks
GACA
اللغه العربيه للطيران المحدي
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
TABLE OF CONTENTS
Part 1 - Definitions, Abbreviations and Editorial Conventions
SUBPART A – DEFINITIONS
§ 1.1 Definitions ....
SUBPART B – ABBREVIATIONS
§ 1.11 Abbreviations ....
SUBPART C – EDITORIAL CONVENTIONS
§ 1.21 Rules of Construction ....
Page 1
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
الحياء للطبيه والن المحترف
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
SUBPART A – DEFINITIONS
§1.1 General Definitions
Note—"This part includes definitions and terms stated in the Annexes of the Chicago Convention, as they are an integral part of the KSA Civil Aviation Law".
ACAS-Passive surveillance
The process of tracking another aircraft without interrogating it, by using the other aircraft's extended squitters. ACAS uses the information obtained via 1090 MHz extended squitter to monitor the need for active surveillance, but not for any other purpose. Passive surveillance applies to both hybrid and extended hybrid surveillance.
ATN security services
A set of information security provisions allowing the receiving end system or intermediate system to unambiguously identify (i.e. authenticate) the source of the received information and to verify the integrity of that information.
ACAS broadcast
A long Mode S air-air surveillance interrogation (UF = 16) with the broadcast address.
ACAS I
An ACAS which provides information as an aid to “see and avoid” action but does not include the capability for generating resolution advisories (RAs).
Note— ACAS I is not intended for international implementation and standardization by ICAO. Therefore, only ACAS I characteristics required to ensure compatible operation with other ACAS configurations and interference limiting are defined in ICAO Annex 10 Vol. IV, Para 4.2.
ACAS II
An ACAS which provides vertical resolution advisories (RAs) in addition to traffic advisories (TAs).
ACAS III
An ACAS which provides vertical and horizontal resolution advisories (RAs) in addition to traffic advisories (TAs).
ACAS-Active surveillance
GACAR Part 1
Page 2
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العليه العامه للطيران المحلي
General Authority of Civil Aviation
[Non-Text]
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
The process of tracking an intruder by using the information gained from the replies to own ACAS interrogations.
ACAS-Coordination
The process by which two ACAS-equipped aircraft select compatible resolution advisories (RAs) by the exchange of resolution advisory complements (RACs).
ACAS-Cycle
The term “cycle” used in the chapter 4 of ICAO Annex 10, Volume IV, refers to one complete pass through the sequence of functions executed by ACAS II or ACAS III, nominally once a second.
ACAS-Hybrid surveillance
The process of using a combination of active surveillance and passive surveillance with validated data to update an ACAS track in order to preserve ACAS independence.
ACAS-Original rate
The original rate of an ACAS-equipped aircraft at any time is its altitude rate at the same time when it followed the original trajectory.
ACAS-Sensitivity level (S)
An integer defining a set of parameters used by the traffic advisory (TA) and collision avoidance algorithms to control the warning time provided by the potential threat and threat detection logic, as well as the values of parameters relevant to the RA selection logic.
Note—For TA and RA selection, sensitivity level is not used in ACAS X compliant systems.
ACAS-Squitters
ACAS uses the information obtained via 1090 MHz extended squitter to monitor the need for active surveillance, but not for any other purpose. Passive surveillance applies to both hybrid and extended hybrid surveillance.
ACAS-Threat
An intruder deserving special attention either because of its close proximity to own aircraft or because successive range and altitude measurements indicate that it could be on a collision or near-collision course with own aircraft. The warning time provided against a threat is sufficiently small that an RA is justified.
ACAS-Track
A sequence of measurements representing positions that could reasonably have been occupied by an aircraft.
Page 3
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العلانيه للطيران المضاني
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
ACAS-Validation
The process of verifying the relative position of an intruder using passive information via 1090 MHz extended squitter by comparing it to the relative position obtained by ACAS active interrogation.
ACAS-Warning time
The time interval between potential threat or threat detection and closest approach when neither aircraft accelerates.
Accelerate-stop distance available (ASDA)
The length of the take-off run available plus the length of stopway, if provided.
Acceptable level of safety performance (ALoSP)
The level of safety performance agreed by State authorities to be achieved for the civil aviation system in a State, as defined in its State safety programme, expressed in terms of safety performance targets and safety performance indicators.
Acceptable Means of Compliance
A non-binding standard adopted by GACA to illustrate a means of compliance to a regulation.
Accepted-application
For any application, filing, method, procedure, or policy, the President has reviewed it and has neither objected to nor approved its proposed use or implementation.
Accepting unit
Air traffic control unit next to take control of an aircraft.
Accident
An occurrence associated with the operation of an aircraft which, in the case of a manned aircraft, takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked, or in the case of an unmanned aircraft, takes place between the time the aircraft is ready to move with the purpose of flight until such time as it comes to rest at the end of the flight and the primary propulsion system is shut down, in which:
a) a person is fatally or seriously injured as a result of:
—being in the aircraft, or
—direct contact with any part of the aircraft, including parts which have become detached from the aircraft, or
Page 4
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
اللغه العربيه للطبع والن المحدي
General Authority of Civil Aviation
[Non-Text]
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
—direct exposure to jet blast, except when the injuries are from natural causes, self-inflicted or inflicted by other persons, or when the injuries are to stowaways hiding outside the areas normally available to the passengers and crew; or
b) the aircraft sustains damage or structural failure which:
—adversely affects the structural strength, performance or flight characteristics of the aircraft, and
—would normally require major repair or replacement of the affected component, except for engine failure or damage, when the damage is limited to a single engine, (including its cowlings or accessories), to propellers, wing tips, antennas, probes, vanes, tires, brakes, wheels, fairings, panels, landing gear doors, windscreens, the aircraft skin (such as small dents or puncture holes), or for minor damages to main rotor blades, tail rotor blades, landing gear, and those resulting from hail or bird strike (including holes in the radome); or
c) the aircraft is missing or is completely inaccessible.
Note 1— For statistical uniformity only, an injury resulting in death within thirty days of the date of the accident is classified, by ICAO, as a fatal injury.
Note 2— An aircraft is considered to be missing when the official search has been terminated and the wreckage has not been located.
Note 3— The type of unmanned aircraft system to be investigated is addressed in 5.1 of the ICAO Annex 13.
Note 4— Guidance for the determination of aircraft damage can be found in Attachment F of the ICAO Annex 13.
Note 5—Also referred to as "aircraft accident".
Accident investigation authority
The authority designated by a State as responsible for aircraft accident and incident investigations within the context of the ICAO Annex 13.
Note—In KSA, Aviation Investigation Bureau (AIB) is the Accident investigation authority.
Accident investigation-Advisor
A person appointed by a State, on the basis of his or her qualifications, for the purpose of assisting its accredited representative in an investigation.
Acclimated
A condition in which a flight crew member has been in a theater for 72 hours or has been given at least 36 consecutive hours free from duty.
Accompanying person
An adult who is travelling with a minor. This person will not necessarily be the parent or legal guardian of
Page 5
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العلانيه للطيران المدني
General Authority of Civil Aviation
[Non-Text]
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
the minor.
Note— It is to be noted that this definition might need to be applied in light of any obligation resulting from the application of national regulations on border checks.
Accountable executive
A single, identifiable person having responsibility for the effective and efficient performance of the service provider's SMS.
Accredited medical conclusion
The conclusion reached by one or more medical experts acceptable to the Licensing Authority for the purposes of the case concerned, in consultation with flight operations or other experts as necessary.
Accredited representative-investigation
A person designated by a State, on the basis of his or her qualifications, for the purpose of participating in an investigation conducted by another State. Where the State has established an accident investigation authority, the designated accredited representative would normally be from that authority.
Accuracy
The closeness with which a measurement approaches the true value established independently.
Acrobatic flight
Maneuvers intentionally performed by an aircraft involving an abrupt change in its attitude, an abnormal attitude, or an abnormal variation in speed.
Active RAC
An RAC is active if it currently constrains the selection of the RA. RACs that have been received within the last six seconds and have not been explicitly cancelled are active.
Acts of unlawful interference
These are acts or attempted acts such as to jeopardize the safety of civil aviation and air transport, i.e.:
—unlawful seizure of aircraft in flight,
—unlawful seizure of aircraft on the ground,
—hostage-taking on board an aircraft or on aerodromes,
—forcible intrusion on board an aircraft, at an airport or on the premises of an aeronautical facility,
—introduction on board an aircraft or at an airport of a weapon or hazardous device or material intended for criminal purposes,
—communication of false information as to jeopardize the safety of an aircraft in flight or on the ground, of
Page 6
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
اللغه العربيه للطبع والن الصحي
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
passengers, crew, ground personnel or the general public, at an airport or on the premises of a civil aviation facility.
Adapted competency model
A group of competencies with their associated description and performance criteria adapted from an ICAO competency framework that an organization uses to develop competency-based training and assessment for a given role.
Adaptive modulation
A system's ability to communicate with another system using multiple burst profiles and a system's ability to subsequently communicate with multiple systems using different burst profiles.
Administrative partnership
Delegation of administering tasks in the ICAO Annex 16, Volume IV from one State to another State (s).
Admission to the State
The permission granted to a person to enter a State by the public authorities of that State in accordance with its national laws.
ADS-Cagreement
A reporting plan which establishes the conditions of ADS-C data reporting (i.e. data required by the air traffic services unit and frequency of ADS-C reports which have to be agreed to prior to using ADS-C in the provision of air traffic services).
Note— The terms of the agreement will be exchanged between the ground system and the aircraft by means of a contract, or a series of contracts.
Advance Passenger Information (API) System
An electronic communications system whereby required data elements are collected and transmitted to border control agencies prior to flight departure or arrival and made available on the primary line at the airport of entry.
Advanced aircraft
An aircraft with equipment in addition to that required for a basic aircraft for a given take-off, approach or landing operation.
Advanced-SMGCS
A system providing routing, guidance and surveillance for the control of aircraft and vehicles in order to maintain the declared surface movement rate under all weather conditions within the aerodrome visibility
Page 7
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العلانيه الخاصه للطيران المضارع
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
operational level (AVOL) while maintaining the required level of safety (ICAO Doc 9830 — Advanced Surface Movement Guidance and Control Systems (A-SMGCS) Manual).
Advisory airspace
An airspace of defined dimensions, or designated route, within which air traffic advisory service is available.
Advisory route
A designated route along which air traffic advisory service is available.
Aerial application operations
The operation of an aircraft for the purpose of dispensing any liquid or particulate matter.
Aerial work
An aircraft operation in which an aircraft is used for specialized services such as agriculture, construction, photography, surveying, observation and patrol, search and rescue, aerial advertisement, etc.
Aero mobile-satellite (R) service (RR S1.36)
Aeronautical mobile-satellite (R) service (RR S1.36). An aeronautical mobile-satellite service reserved for communications relating to safety and regularity of flights, primarily along national or international civil air routes.
Aerodrome
A defined area on land or water (including any buildings, installations and equipment) intended to be used either wholly or in part for the arrival, departure and surface movement of aircraft.
Aerodrome beacon
Aeronautical beacon used to indicate the location of an aerodrome from the air.
Aerodrome certificate
A certificate issued by the appropriate authority under applicable regulations for the operation of an aerodrome.
Aerodrome climatological summary
Concise summary of specified meteorological elements at an aerodrome, based on statistical data.
Aerodrome climatological table
Table providing statistical data on the observed occurrence of one or more meteorological elements at an aerodrome.
Page 8
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
اللغه العربيه للطيران المحترف
General Authority of Civil Aviation
[Non-Text]
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Aerodrome control radio station
A station providing radio communication between an aerodrome control tower and aircraft or mobile aeronautical stations.
Aerodrome control service
Air traffic control service for aerodrome traffic.
Aerodrome control tower
A unit established to provide air traffic control service to aerodrome traffic.
Aerodrome elevation
The elevation of the highest point of the landing area.
Aerodrome facilities and equipment
Facilities and equipment, inside or outside the boundaries of an aerodrome, that are constructed or installed and maintained for the arrival, departure and surface movement of aircraft.
Aerodrome identification sign
A sign placed on an aerodrome to aid in identifying the aerodrome from the air.
Aerodrome infrastructure
Physical elements and related facilities of the aerodrome.
Aerodrome manual
The manual that forms part of the application for an aerodrome certificate pursuant to these regulations, including any amendments thereto accepted/approved by the CAA.
Aerodrome mapping data (AMD)
Data collected for the purpose of compiling aerodrome mapping information for aeronautical uses.
Note— Aerodrome mapping data are collected for purposes that include the improvement of the user's situational awareness, surface navigation operations, training, charting and planning.
Aerodrome mapping database (AMDB)
A collection of aerodrome mapping data organized and arranged as a structured data set.
Aerodrome meteorological office
An office designated to provide meteorological service for aerodromes serving international air navigation.
Page 9
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
اللغه العربيه للطيران المحترف
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Aerodrome model
A model incorporated into the software of a flight simulation training device (FSTD) that is classified as follows:
a) Class I. Whether modeling real world or fictional aerodromes (or landing areas for rotorcraft), these aerodrome models (or landing areas for rotorcraft) are those that meet the requirements of Table A3B or C3B, found in attachment 2 of Appendix A or C to Title 14, Code of Federal Regulations of the United States (14 CFR) part 60, as appropriate, are evaluated by the President, and are listed on the Statement of Qualification(SOQ).
b) Class II. Whether modeling real world or fictional aerodromes (or landing areas for rotorcraft), these aerodrome models (or landing areas for rotorcraft) are those models in excess of those used for simulator qualification at a specified level. The FSTD sponsor is responsible for determining these models meet the requirements set out in Table A3C or C3C, found in attachment 2 of Appendix A or C to 14 CFR Part 60, as appropriate.
c) Class III. This is a special class of aerodrome model (or landing area for rotorcraft), used for specific purposes, and includes models that may be incomplete or inaccurate when viewed without restriction, but when appropriate limits are applied (for example, “valid for use only when reported visibility or RVR of 800 m or less is specified,” “valid for use only for approaches to Runway 22L and 22R”), those features that may be incomplete or inaccurate may not be able to be recognized as such by the crew member being trained, tested, or checked. Class III aerodrome models used for training, testing, or checking activities require the certificate holder to submit to the President an appropriate analysis of the skills, knowledge, and abilities necessary for competent performance of the task(s) in which this particular model is to be used, and requires GACA acceptance of each Class III model.
Aerodrome operating minima
The limits of usability of an aerodrome for:
a) take-off, expressed in terms of runway visual range and/or visibility and, if necessary, cloud conditions;
b) landing in 2D instrument approach operations, expressed in terms of visibility and/or runway visual range and decision altitude/height (DA/H) and, if necessary, cloud condition; and
c) landing in 3D instrument approach operations, expressed in terms of visibility and/or runway visual range and decision altitude/height (DA/H) as appropriate to the type and/or category of the operation.
d) landing in non-precision approach and landing operations, expressed in terms of visibility and/or runway visual range, minimum descent altitude/height (MDA/H) and, if necessary, cloud conditions. (ICAO Annex 4).
Aerodrome operator
In relation to a certificated aerodrome, means the aerodrome certificate holder.
Page 10
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العلانيه للطيران المدني
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Aerodrome pair
A group of two aerodromes composed of a departing aerodrome and an arrival aerodrome.
Aerodrome reference point
The designated geographical location of an aerodrome.
Aerodrome traffic
All traffic on the maneuvering area of an aerodrome and all aircraft flying in the vicinity of an aerodrome.
Note— An aircraft is in the vicinity of an aerodrome when it is in, entering or leaving an aerodrome traffic circuit.
Aerodrome traffic density
a) Light. Where the number of movements in the mean busy hour is not greater than 15 per runway or typically less than 20 total aerodrome movements.
b) Medium. Where the number of movements in the mean busy hour is of the order of 16 to 25 per runway or typically between 20 to 35 total aerodrome movements.
c) Heavy. Where the number of movements in the mean busy hour is of the order of 26 or more per runway or typically more than 35 total aerodrome movements.
Note 1— The number of movements in the mean busy hour is the arithmetic mean over the year of the number of movements in the daily busiest hour.
Note 2— Either a take-off or a landing constitutes a movement.
Aerodrome traffic zone
An airspace of defined dimensions established around an aerodrome for the protection of aerodrome traffic.
Aerodrome/standby reserve
A defined duty period during which a flight crew member is required by a certificate holder to be at an aerodrome for a possible assignment.
Aerodrome-SMS
A system for the management of safety at aerodromes including the organizational structure, responsibilities, procedures, processes and provisions for the implementation of aerodrome safety policies by an aerodrome operator, which provides for the control of safety at, and the safe use of, the aerodrome.
Aerodynamic coefficients
Non-dimensional coefficients for aerodynamic forces and moments.
GACAR Part 1
Page 11
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العلانيه للطيبان المضي
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Aerodynamic diameter of a particle
The diameter of an equivalent sphere of unit density ( \( 1g/cm^{3} \) ) with the same settling velocity as the particle in question, also referred to as “aerodynamic diameter”.
AeroMACS downlink (DL)
The transmission direction from the base station (BS) to the mobile station (MS).
AeroMACS handover
The process in which a mobile station (MS) migrates from the air-interface provided by one base station (BS) to the air-interface provided by another BS. A break-before-make AeroMACS handover is where service with the target BS starts after a disconnection of service with the previous serving BS.
AeroMACS uplink (UL)
The transmission direction from the mobile station (MS) to the base station (BS).
Aeronautical administrative communications (AAC)
Communications necessary for the exchange of aeronautical administrative messages.
Aeronautical beacon
An aeronautical ground light visible at all azimuths, either continuously or intermittently, to designate a particular point on the surface of the earth.
Note— Also referred to as "aeronautical ground light".
Aeronautical broadcasting service
A broadcasting service intended for the transmission of information relating to air navigation.
Aeronautical chart
A representation of a portion of the Earth, its culture and relief, specifically designated to meet the requirements of air navigation.
Aeronautical data
A representation of aeronautical facts, concepts or instructions in a formalized manner suitable for communication, interpretation or processing.
Aeronautical experience-Pilot
Pilot time obtained in an aircraft or flight simulation training device (FSTD) for meeting the appropriate training and flight time requirements for an airman certificate or rating, or recency of flight experience requirements.
Page 12
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
الحياء للطيران المحترف
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Aeronautical facility
a) The various types of communication systems used for an aeronautical broadcasting service, or an aeronautical fixed service, that supports IFR flight or an air traffic service;
b) The ground elements of the various types of communication systems used for an aeronautical mobile service;
c) The various types of radio navigation aids used for the aeronautical radio navigation service;
d) Any other type of ground-based telecommunication system that supports IFR flight or an air traffic service; or
e) The various types of ground based telecommunication systems that operate in the aeronautical mobile radio frequency bands and are used to provide basic weather information, local aerodrome information, or flight following services.
Aeronautical fixed circuit
A circuit forming part of the aeronautical fixed service (AFS).
Aeronautical fixed service (AFS)
A telecommunication service between specified fixed points provided primarily for the safety of air navigation and for the regular, efficient and economical operation of air services.
Aeronautical fixed station
A station in the aeronautical fixed service.
Aeronautical fixed telecommunication network (AFTN)
A worldwide system of aeronautical fixed circuits provided, as part of the aeronautical fixed service, for the exchange of messages and/or digital data between aeronautical fixed stations having the same or compatible communications characteristics.
Aeronautical ground light
Any light specially provided as an aid to air navigation, other than a light displayed on an aircraft.
Aeronautical information
Information resulting from the assembly, analysis and formatting of aeronautical data.
Aeronautical Information Circular (AIC)
A notice containing information that does not qualify for the origination of a NOTAM or for inclusion in the AIP, but which relates to flight safety, air navigation, technical, administrative or legislative matters.
Page 13
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العلانيه للطبيه والنالم الحاليه
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Aeronautical information management (AIM)
The dynamic, integrated management of aeronautical information through the provision and exchange of quality-assured digital aeronautical data in collaboration with all parties.
Aeronautical information product
Aeronautical data and aeronautical information provided either as digital data sets or as a standardized presentation in paper or electronic media. Aeronautical information products include:
—Aeronautical Information Publication (AIP), including Amendments and Supplements;
—Aeronautical Information Circulars (AIC);
—aeronautical charts;
—NOTAM; and
—digital data sets.
Note—Aeronautical information products are intended primarily to satisfy international requirements for the exchange of aeronautical information.
Aeronautical Information Publication (AIP)
A publication issued by or with the authority of a State and containing aeronautical information of a lasting character essential to air navigation.
Aeronautical information service (AIS)
A service established within the defined area of coverage responsible for the provision of aeronautical data and aeronautical information necessary for the safety, regularity and efficiency of air navigation.
Aeronautical meteorological station
A station designated to make observations and meteorological reports for use in international air navigation.
Aeronautical Mobile Airport Communications System (AeroMACS)
A high-capacity data link supporting mobile and fixed communications on the aerodrome surface for both fixed and mobile application.
Aeronautical mobile (R) \( ^{route} \) service (RR S1.33)
An aeronautical mobile service reserved for communications relating to safety and regularity of flight, primarily along national or international civil air routes.
Aeronautical mobile service (RR S1.32)
A mobile service between aeronautical stations and aircraft stations, or between aircraft stations, in which
Page 14
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العلنيه العامه للطيران المدن
General Authority of Civil Aviation
[Non-Text]
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
survival craft stations may participate; emergency position-indicating radio beacon stations may also participate in this service on designated distress and emergency frequencies.
Aeronautical mobile-satellite (R) service
Aeronautical mobile-satellite (Route) service (RR S1.33): An aeronautical mobile-satellite service reserved for communications relating to safety and regularity of flights, primarily along national or international civil air routes.
Aeronautical mobile-satellite service (RR S1.35)
A mobile-satellite service in which mobile earth stations are located onboard aircraft; survival craft stations and emergency position-indicating radio beacon stations may also participate in this service.
Aeronautical operational control (AOC)
Communication required for the exercise of authority over the initiation, continuation, diversion or termination of flight for safety, regularity and efficiency reasons.
Aeronautical radio navigation service (RR S1.46)
A radio navigation service intended for the benefit and for the safe operation of aircraft.
Note— The following Radio Regulations are quoted for purposes of reference and/or clarity in understanding of the above definition of the aeronautical radio navigation service:
RR S1.10 Radio navigation: Radio determination used for the purpose of navigation, including obstruction warning.
RR S1.9 Radio determination: The determination of the position, velocity and/or other characteristics of an object, or the obtaining of information relating to these parameters, by means of the propagation properties of radiowaves.
Aeronautical station (RR S1.81)
A land station in the aeronautical mobile service. In certain instances, an aeronautical station may be located, for example, on board ship or on a platform at sea.
Aeronautical telecommunication agency
An agency responsible for operating a station or stations in the aeronautical telecommunication service.
Aeronautical telecommunication log
A record of the activities of an aeronautical telecommunication station.
Aeronautical telecommunication network (ATN)
A global internetwork architecture that allows ground, air-ground and avionic data subnetworks to
Page 15
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العليه الحامه للطيران المضارع
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
exchange digital data for the safety of air navigation and for the regular, efficient and economic operation of air traffic services.
Aeronautical telecommunication service
A telecommunication service provided for any aeronautical purpose.
Aeronautical telecommunication station
A station in the aeronautical telecommunication service.
Aeroplane
A power-driven heavier-than-air aircraft, deriving its lift in flight chiefly from aerodynamic reactions on surfaces which remain fixed under given conditions of flight.
Note — Also referred to as "airplane".
Aeroplane owner
Person(s), organization(s) or enterprise(s) identified via Item 4 (Name of owner) and Item 5 (Address of owner) on the certificate of registration of an aeroplane.
Applicable until 25 November 2026.
Aeroplane owner
Person(s), organization(s) or enterprise(s) identified either through Items 4a and 4b on the certificate of registration of an aeroplane (provided that the selected basis of registration be “ownership of aircraft”), or otherwise through Item 5 of the said certificate.
Applicable as of 26 November 2026.
Airplane reference field length
The minimum field length required for take-off at maximum certificated take-off mass, sea level, standard atmospheric conditions, still air and zero runway slope, as shown in the appropriate airplane flight manual prescribed by the certificating authority or equivalent data from the airplane manufacturer. Field length means balanced field length for airplanes, if applicable, or take-off distance in other cases.
Note— Attachment A, Section 2, provides information on the concept of balanced field length and the Airworthiness Manual (ICAO Doc 9760) contains detailed guidance on matters related to take-off distance.
Affects (or Affected)-Aircraft structure
The structure has been physically repaired, altered, or modified, or the structural loads acting on the structure have been increased or redistributed.
Page 16
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
اللغه المطبيه للطبيه والنماض
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Afterburning
A mode of engine operation wherein a combustion system fed (in whole or part) by vitiated air is used.
AFTN circuit
A circuit forming part of the aeronautical fixed telecommunication network (AFTN).
AFTN communication center
An AFTN station whose primary function is the relay or retransmission of AFTN traffic from (or to) a number of other AFTN stations connected to it.
AFTN destination station
An AFTN station to which messages and/or digital data are addressed for processing for delivery to the addressee.
AFTN entry-exit points
Centers through which AFTN traffic entering and leaving an ICAO Air Navigation Region should flow.
AFTN group
Three or more radio stations in the aeronautical fixed telecommunications network exchanging communications on the same radio frequency.
AFTN origin station
An AFTN station where messages and/or digital data are accepted for transmission over the AFTN.
AFTN station
A station forming part of the aeronautical fixed telecommunication network (AFTN) and operating as such under the authority or control of a State.
Note— In KSA, the AFTN operates under the authority of GACA.
Agent for service
A person designated by a certificate holder to receive legal notices or processes on its behalf.
Agreement summary (ICAO Article 83 bis)
When an aircraft is operating under an Article 83 bis agreement between the State of Registry and another State, the agreement summary is a document transmitted with the Article 83 bis Agreement registered with the ICAO Council that identifies succinctly and clearly which functions and duties are transferred by the State of Registry to that other State.
Page 17
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
الحياء للطبيع وال按
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Note— The other State in the above definition refers to the State of the Operator for commercial air transport operations.
AIP Amendment
Permanent changes to the information contained in the AIP.
AIP Supplement
Temporary changes to the information contained in the AIP which are provided by means of special pages.
Air agency
A school, training center, repair station or Aviation Recreation Organization holding a certificate issued by the President.
Air ambulance operations
The transportation of medical patients by aircraft between one aerodrome and another aerodrome.
Air defense identification zone (ADIZ)
Special designated airspace of defined dimensions within which aircraft are required to comply with special identification and/or reporting procedures additional to those related to the provision of air traffic services.
Air operator certificate (AOC)
A certificate authorizing an operator to carry out specified commercial air transport.
Air traffic
All aircraft in flight or operating on the maneuvering area of an aerodrome.
Air traffic advisory service
A service provided within advisory airspace to ensure separation, in so far as practical, between aircraft which are operating on IFR flight plans.
Air traffic control clearance
Authorization for an aircraft to proceed under conditions specified by an air traffic control unit.
Note 1— For convenience, the term “air traffic control clearance” is frequently abbreviated to “clearance” when used in appropriate contexts.
Note 2— The abbreviated term “clearance” may be prefixed by the words “taxi,” “take-off,” “departure,” “en route,” “approach” or “landing” to indicate the particular portion of flight to which the air traffic control clearance relates.
Air traffic control service
Page 18
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
VERSION 14.0
Consult the GACA website for current version
GACA
اللغه العربيه للطيبان المحترف
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
A service provided for the purpose of:
a) preventing collisions:
1) between aircraft, and
2) on the maneuvering area between aircraft and obstructions; and
b) expediting and maintaining an orderly flow of air traffic.
Air traffic control unit
A generic term meaning variously, area control center, approach control unit or aerodrome control tower.
Air traffic controller schedule
A plan for allocating air traffic controller duty periods and non-duty periods over a period of time.
Note— Also referred to as "Controllers roster".
Air traffic flow management (ATFM)
A service established with the objective of contributing to a safe, orderly and expeditious flow of air traffic by ensuring that ATC capacity is utilized to the maximum extent possible and that the traffic volume is compatible with the capacities declared by the appropriate ATS authority.
Air traffic management (ATM)
The dynamic, integrated management of air traffic and airspace (including air traffic services, airspace management and air traffic flow management) — safely, economically and efficiently — through the provisic of facilities and seamless services in collaboration with all parties and involving airborne and ground-based functions.
Air traffic service (ATS)
A generic term meaning variously, flight information service, alerting service, air traffic advisory service, air traffic control service (area control service, approach control service or aerodrome control service).
Air traffic services airspaces
Airspaces of defined dimensions, alphabetically designated, within which specific types of flights may operate and for which air traffic services and rules of operation are specified.
Note— ATS airspaces are classified as Class A to G as described in 2.6 of the ICAO Annex 11.
Air traffic services reporting office
A unit established for the purpose of receiving reports concerning air traffic services and flight plans submitted before departure.
Note— An air traffic services reporting office may be established as a separate unit or combined with an
Page 19
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
الحياء للطبيعات
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
existing unit, such as another air traffic services unit, or a unit of the aeronautical information service.
Air traffic services unit (ATSU)
A generic term meaning variously, air traffic control unit, flight information center or air traffic services reporting office.
Air transit route
A defined route for the air transiting of helicopters.
Air/fuel ratio
The mass rate of airflow through the hot section of the engine divided by the mass rate of fuel flow to the engine.
AIRAC
An acronym (aeronautical information regulation and control) signifying a system aimed at advance notification, based on common effective dates, of circumstances that necessitate significant changes in operating practices.
Airborne collision avoidance system (ACAS)
An aircraft system based on secondary surveillance radar (SSR) transponder signals which operates independently of ground-based equipment to provide advice to the pilot on potential conflicting aircraft that are equipped with SSR transponders.
Note—SSR transponders referred to above are those operating in Mode C or Mode S. ACAS may also use automatic dependent surveillance — broadcast (ADS-B) signals received from other aircraft to improve its performance.
Aircraft
Any machine that can derive support in the atmosphere from the reactions of the air other than the reactions of the air against the earth's surface.
Note— When the word aircraft is used, it includes the remotely piloted aircraft.
Aircraft — category
Classification of aircraft according to specified basic characteristics, e.g. airplane, helicopter, glider, free balloon.
Aircraft — type of
All aircraft of the same basic design including all modifications thereto except those modifications which result in a change in handling or flight characteristics.
Page 20
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العليه العامه للطيران المضي
General Authority of Civil Aviation
[Non-Text]
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Aircraft address
A unique combination of twenty-four bits available for assignment to an aircraft for the purpose of airground communications, navigation and surveillance.
Note— SSR Mode S transponders transmit extended squitters to support the broadcast of aircraft-derivee position for surveillance purposes. The broadcast of this type of information is a form of automatic dependent surveillance (ADS) known as ADS-broadcast (ADS-B).
Aircraft avionics
A term designating any electronic device — including its electrical part — for use in an aircraft, including radio, automatic flight control and instrument systems.
Note— Also referred to as "avionics".
Aircraft certificated for single-pilot operation
A type of aircraft which the State of Registry has determined, during the certification process, can be operated safely with a minimum crew of one pilot.
Aircraft classification number (ACN)
A number expressing the relative effect of an aircraft on a pavement for a specified standard subgrade category. Applicable until 27 Nov 2024.
Aircraft classification rating (ACR)
A number expressing the relative effect of an aircraft on a pavement for a specified standard subgrade category. Applicable as of 28 Nov 2024.
Aircraft data circuit-terminating equipment (ADCE)
An aircraft specific data circuit-terminating equipment that is associated with an airborne data link processor (ADLP). It operates a protocol unique to Mode S data link for data transfer between air and ground.
Aircraft data link processor (ADLP)
An aircraft-resident processor that is specific to a particular air-ground data link (e.g. Mode S) and which provides channel management, and segments and/or reassembles messages for transfer. It is connected to one side of aircraft elements common to all data link systems and on the other side to the air-ground link itself.
Aircraft earth station (AES)
A mobile earth station in the aeronautical mobile-satellite service located on board an aircraft (see also “GES”).
Page 21
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
اللغه العربيه للطيران المحترف
General Authority of Civil Aviation
[Non-Text]
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Aircraft equipment
Articles, including first-aid and survival equipment and commissary supplies, but not spare parts or stores, for use on board an aircraft during flight.
Aircraft maintenance schedule
A document that describes the specific scheduled maintenance tasks and their frequency of completion and related procedures, such as a reliability program, necessary for the safe operation of those aircraft to which it applies.
Note— Also referred to as Aircraft Maintenance Program (AMP).
Aircraft observation
The evaluation of one or more meteorological elements made from an aircraft in flight.
Aircraft operating agency
A person, organization or enterprise engaged in, or offering to engage in, an aircraft operation.
Aircraft operating manual
A manual, acceptable to the State of the Operator, containing normal, abnormal and emergency procedures, checklists, limitations, performance information, details of the aircraft systems and other material relevant to the operation of the aircraft.
Note — The aircraft operating manual is part of the operations manual.
Aircraft operator
A person, organization or enterprise engaged in or offering to engage in an aircraft operation.
Aircraft operators' documents
Air waybills/consignment notes, passenger tickets and boarding passes, bank and agent settlement plan documents, excess baggage tickets, miscellaneous charges orders (M.C.O.), damage and irregularity reports, baggage and cargo labels, timetables, and weight and balance documents, for use by aircraft operators.
Aircraft required to be operated with a co-pilot
A type of aircraft that is required to be operated with a co-pilot, as specified in the flight manual or by the air operator certificate.
Aircraft security check
An inspection of the interior of an aircraft to which passengers may have had access and an inspection of the hold for the purposes of discovering suspicious objects, weapons, explosives or other dangerous devices,
Page 22
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
الحياء للعلوم والطبيه
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
articles and substances.
Aircraft security search
A thorough inspection of the interior and exterior of the aircraft for the purpose of discovering suspicious objects, weapons, explosives or other dangerous devices, articles or substances.
Aircraft stand
A designated area on an apron intended to be used for parking an aircraft.
Aircraft station (RR S1.83)
A mobile station in the aeronautical mobile service, other than a survival craft station, located on board an aircraft.
Aircraft Tracking
A process, established by the operator, that maintains and updates, at standardized intervals, a ground-based record of the four dimensional position of individual aircraft in flight.
Aircraft/vehicle
May be used to describe either a machine or device capable of atmospheric flight, or a vehicle on the airport surface movement area (i.e. runways and taxiways).
Aircraft-based augmentation system (ABAS)
An augmentation system that augments and/or integrates the information obtained from the other GNSS elements with information available on board the aircraft.
Airframe
The fuselage, booms, nacelles, cowlings, fairings, airfoil surfaces (including rotors but excluding propellers and rotating engine airfoils), and landing gear of an aircraft and their accessories and controls.
Air-ground communication
Two-way communication between aircraft and stations or locations on the surface of the earth.
Air-ground control radio station
An aeronautical telecommunication station having primary responsibility for handling communications pertaining to the operation and control of aircraft in a given area.
Air-initiated protocol
A procedure initiated by a Mode S aircraft installation for delivering a standard length or extended length
Page 23
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
الحياء للطبيه والن المحترف
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
downlink message to theground.
Airline
As provided in Article 96 of the Convention, any air transport enterprise offering or operating a scheduled international air service.
Airman
A person holding, or required to hold, a current and valid certificate or authorization issued under GACAR Part 61, 64, 65 or66.
Airmanship
The consistent use of good judgement and well-developed knowledge, skills and attitudes to accomplish flight objectives.
AIRMET information
Information issued by a meteorological watch office concerning the occurrence or expected occurrence of specified en-route weather phenomena which may affect the safety of low-level aircraft operations and which was not already included in the forecast issued for low-level flights in the flight information region concerned or sub-area thereof.
Air-report
A report from an aircraft in flight prepared in conformity with requirements for position, and operational and/or meteorological reporting.
Note— Details of the AIREP form are given in the PANS-ATM (ICAO Doc 4444).
Airship
A power-driven lighter-than-air aircraft.
Airside
The movement area of an airport, adjacent terrain and buildings or portions thereof, access to which is controlled.
Air-taxiing
Movement of a helicopter/VTOL above the surface of an aerodrome, normally in ground effect and at a ground speed normally less than 37 km/h (20 kt).
Note— The actual height may vary, and some helicopters may require air-taxiing above 8 m (25 ft) AGL to reduce ground effect turbulence or provide clearance for cargo slingloads.
Page 24
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العلانيه للطبيه وال меди
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Air-to-ground communication
One-way communication from aircraft to stations or locations on the surface of the earth.
Airway
A control area or portion thereof established in the form of a corridor.
Airworthiness certificate
A document issued by a state certifying that an aircraft complies with the design aspects of appropriate airworthiness requirements.
Note— Also referred to as “Certificate of Airworthiness”.
Airworthiness directive (AD)
A legally enforceable rule that applies to aircraft registered in the Kingdom of Saudi Arabia. ADs are designed to be applicable to specific types of aircraft or engines, propellers, and articles that are part of the aircraft type design, even if an individual product or article has been changed by modifying, altering, or repairing it in the area addressed by an airworthiness directive.
Airworthy
The status of an aircraft, engine, propeller or part when it conforms to its approved design and is in a condition for safe operation.
Applicable until 25 November 2026.
Airworthy
The status of an aircraft, remote pilot station, engine, propeller or part when it conforms to its approved design and is in a condition for safe operation.
Applicable as of 26 November 2026.
AIS product
Aeronautical data and aeronautical information provided in the form of the elements of the Integrated Aeronautical Information Package (except NOTAM and PIB), including aeronautical charts, or in the form of suitable electronic media.
ALERFA
The code word used to designate an alert phase.
Alert
GACAR Part 1
Page 25
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العلانيه للطيران المدني
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
An indication provided to other aircraft systems or annunciation to the pilot to identify that an operating parameter of a navigation system is out of tolerance.
Alert limit
For a given parameter measurement, the error tolerance not to be exceeded without issuing an alert.
Alert phase
A situation wherein apprehension exists as to the safety of an aircraft and its occupants.
Alerting post
Any facility intended to serve as an intermediary between a person reporting an emergency and a rescue coordination center or rescue subcenter.
Alerting service
A service provided to notify appropriate organizations regarding aircraft in need of search and rescue aid, and assist such organizations as required.
Alternate aerodrome
An aerodrome to which an aircraft may proceed when it becomes either impossible or inadvisable to proceed to or to land at the aerodrome of intended landing where the necessary services and facilities are available, where aircraft performance requirements can be met and which is operational at the expected time of use. Alternate aerodromes include the following:
Take-off alternate. An alternate aerodrome at which an aircraft would be able to land should this become necessary shortly after take-off and it is not possible to use the aerodrome of departure.
En-route alternate. An alternate aerodrome at which an aircraft would be able to land in the event that a diversion becomes necessary while en route.
Destination alternate. An alternate aerodrome at which an aircraft would be able to land should it become either impossible or inadvisable to land at the aerodrome of intended landing.
Note— The aerodrome from which a flight departs may also be an en-route or a destination alternate aerodrome for that flight.
Alternate heliport
A heliport to which a helicopter may proceed when it becomes either impossible or inadvisable to proceed to or to land at the heliport of intended landing where the necessary services and facilities are available, where aircraft performance requirements can be met and which is operational at the expected time of use. Alternate heliports include the following:
Take-off alternate. An alternate heliport at which a helicopter would be able to land should this become
Page 26
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العليه للطيران المدن
General Authority of Civil Aviation
[Non-Text]
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
necessary shortly after take-off and it is not possible to use the heliport of departure.
En-route alternate. An alternate heliport at which a helicopter would be able to land in the event that a diversion becomes necessary while en route.
Destination alternate. An alternate heliport at which a helicopter would be able to land should it become either impossible or inadvisable to land at the heliport of intended landing.
Note— The heliport from which a flight departs may be an en-route or a destination alternate heliport for that flight.
Alternative means of communication
A means of communication provided with equal status, and in addition to the primary means.
Alternative Means of Compliance (AltMOC)
An alternative to an existing acceptable means of compliance or to a means of establishing compliance with a regulation.
Altimetry system error (ASE)
The difference between the altitude indicated by the altimeter display, assuming a correct altimeter barometric setting, and the pressure altitude corresponding to the undisturbed ambient pressure.
Altitude
The vertical distance of a level, a point or an object considered as a point, measured from mean sea level.
Altitude crossing RA
A resolution advisory is altitude crossing if own ACAS aircraft is currently at least 30 m (100 ft) below or above the threat aircraft for upward or downward sense advisories, respectively.
Altitude layer
Each encounter is attributed to one of six altitude layers as follows:
<table><tr><td>Layer</td><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr><tr><td>from</td><td></td><td>2 300 ft</td><td>5 000 ft</td><td>10 000 ft</td><td>20 000 ft</td><td>41 000 ft</td></tr><tr><td>to</td><td>2 300 ft</td><td>5 000 ft</td><td>10 000 ft</td><td>20 000 ft</td><td>41 000 ft</td><td></td></tr></table>
The altitude layer of an encounter is determined by the average altitude of the two aircraft at closest approach.
Page 27
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
العلانيه للطبيه والن الصحيه
General Authority of Civil Aviation
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Note— For the purposes of defining the performance of the collision avoidance logic, there is no need to specify the physical basis of the altitude measurement or the relationship between altitude and ground level.
Ambient noise
The acoustical noise from sources other than the test aircraft present at the microphone site during aircraft noise measurement. Ambient noise is one component of background noise.
Ampere (A)
The ampere is that constant electric current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 metre apart in a vacuum, would produce between these conductors a force equal to \( 2 \times 10^{-7} \) newton per metre of length.
Angular displacement sensitivity
The ratio of measured DDM to the corresponding angular displacement from the appropriate reference line.
Antenna port
A point where the received signal power is specified. For an active antenna, the antenna port is a fictitious point between the antenna elements and the antenna pre-amplifier. For a passive antenna, the antenna port is the output of the antenna itself.
Anticipated operating conditions
Those conditions which are known from experience or which can be reasonably envisaged to occur during the operational life of the aircraft taking into account the operations for which the aircraft is made eligible, the conditions so considered being relative to the meteorological state of the atmosphere, to the configuration of terrain, to the functioning of the aircraft, to the efficiency of personnel and to all the factors affecting safety in flight. Anticipated operating conditions do not include:
a) those extremes which can be effectively avoided by means of operating procedures; and
b) those extremes which occur so infrequently that to require the Standards to be met in such extremes would give a higher level of airworthiness than experience has shown to be necessary and practical.
Applicable regulation
Regulations applicable to the aerodrome and to the aerodrome operator that are transposed from international specifications and other relevant regulations.
Application-data processing
Manipulation and processing of data in support of user requirements (ISO 19104, Geographic information on Terminology).
Page 28
GACAR Part 1
UNCONTROLLED DOCUMENT WHEN DOWNLOADED
Consult the GACA website for current version
VERSION 14.0
GACA
اللغه العربيه للطيران المحلي
General Authority of Civil Aviation
[Non-Text]
GACAR PART 1 – DEFINITIONS, ABBREVIATIONS AND EDITORIAL CONVENTIONS
Application entity(AE)
An AE represents a set of ISO/OSI communication capabilities of a particular application process (see ICAO Annex 10 Vol III, ISO/IEC 9545 for further details).
Approach and landing phase — helicopters
That part of the flight from 300 m (1 000 ft) above the elevation of the FATO, if the flight is planned to exceed this height, or from the commencement of the descent in the other cases, to landing or to the balked landing point.
Approach angle
The difference in the ground headings of the two aircraft at closest approach, with 180 degrees defined as head on and 0 degrees defined as parallel.
Approach control service
Air traffic control service for arriving or departing controlled
…(436,110 more chars)