gaca_gov_sa · executive_regulation · processed · 178 chunks
GACA اللغه العربيه للطيران المدني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION TABLE OF CONTENTS GACAR PART 179 - METEOROLOGICAL SERVICE FOR AIR NAVIGATION TABLE OF CONTENTS .... 1 SUBPART A – GENERAL.... 5 § 179.1 Applicability....5 § 179.3 Restrictions on a certified MET Service Provider. 5 § 179.5 Objective, determination and provision of meteorological service...... 6 § 179.7 Notifications Required from Operators. 6 § 179.9 Coordination Requirements....7 § 179.11 Regional Air Navigation Agreements. 8 § 179.13 Applicability of the Standards of the International Civil Aviation Organization and the World Meteorological Organization....9 § 179.15 Human Factors.... 10 §179.17 Site Requirements.... 10 §179.19 Verification, Validation, Periodic Inspection, Testing, and Calibration. . 11 § 179.21 Inspections.... 12 SUBPART B - PERSONNEL 13 § 179.31 Personnel Requirements. 13 § 179.33 Meteorological Personnel Qualifications. 13 § 179.35 Staffing Levels and Training.... 15 § 179.37 Human Performance.... 15 SUBPART C - MANUAL REQUIREMENTS ...... 17 § 179.41 General. 17 § 179.43 Manual Contents. 17 § 179.45 Local observing and reporting procedures.... 19 SUBPART D – GLOBAL SYSTEMS, SUPPORTING CENTRES AND METEOROLOGICAL OFFICES 20 § 179.51 Applicability.... 20 § 179.53 World Area Forecast Centers (WAFC) within the framework of the world area forecast system.... 20 § 179.55 Aerodrome Meteorological Offices.... 21 § 179.57 Meteorological Watch Offices (MWOs).... 22 § 179.59 Volcanic Ash. 23 § 179.61 Tropical Cyclone Advisory Centers (TCAC) 24 § 179.63 Space Weather Centers (SWXC). 25 SUBPART E – Aerodrome meteorological observational information.... 27 Page 1 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA اللغه العربيه للطيران المدني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION § 179.71 Applicability.... 27 § 179.73 Aeronautical Meteorological Stations and Observations. 27 § 179.75 Agreement Between the certified MET Service Provider and the ATS Service Provider.... 29 § 179.77 Routine Observations and Reports. 30 § 179.79 Special Observations and Reports.... 31 § 179.81 Characteristics of meteorological reports. 31 § 179.83 Use of CAVOK.... 32 § 179.85 Observing and Reporting Meteorological Elements.... 33 § 179.87 Reporting Meteorological Information from Automatic Observing Systems.... 36 § 179.91 Observing and Reporting Volcanic Activity. 37 § 179.93 Dissemination of meteorological reports.... 37 § 179.95 Local routine report and local special report. 37 SUBPART F – AIRCRAFT METEOROLOGICAL OBSERVATIONAL INFORMATION 39 § 179.101 Applicability.... 39 § 179.103 Relay of Air-Reports by ATS Units.... 39 SUBPART G – AERODROME AND EN-ROUTE METEOROLOGICAL FORECAST INFORMATION 41 § 179.111 Applicability.... 41 § 179.113 Interpretation and Use of Forecasts.... 41 § 179.115 Aerodrome Meteorological Forecast Information. 41 § 179.117 Landing Forecasts (trend forecasts). 43 § 179.119 Forecasts for Takeoff.... 43 § 179.121 Area Forecasts for Low-Level Flights. 44 § 179.123 Area Forecasts for Low-Level Flights (GAMET, and area forecasts in chart form). 44 § 179.125 Forecasts by volcanic ash advisory centers 45 SUBPART H – METEOROLOGICAL INFORMATION CONTAINING ADVISORIES, ALERTS, WARNINGS AND NOTICES 46 § 179.131 Applicability.... 46 § 179.133 Volcanic ash advisory information and information from State volcano observatories 46 § 179.135 Tropical cyclone advisory information.... 46 § 179.137 Space weather advisory information.... 46 § 179.139 SIGMET Information.... 46 § 179.141 Dissemination of SIGMET information 48 Page 2 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA اللغه العربيه للطيران المدني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION § 179.143 AIRMET Information.... 48 § 179.145 Aerodrome Warnings. 49 § 179.147 Dissemination of aerodrome warnings.... 50 § 179.149 Wind Shear Warnings and Alerts.... 51 § 179.151 Dissemination of wind shear warnings and alerts.... 51 SUBPART I – AERONAUTICAL CLIMATOLOGICAL INFORMATION...... 52 § 179.161 Applicability.... 52 § 179.163 General. 52 § 179.165 Aerodrome Climatological Tables & Summaries .... 52 § 179.167 Copies of Meteorological Observational Data.... 53 § 179. 169 Exchange of aeronautical climatological information.... 53 SUBPART J – METEOROLOGICAL SERVICE FOR OPERATORS AND FLIGHT CREW MEMBERS.... 54 § 179.171 Applicability.... 54 § 179.173 General. 54 § 179.175 Briefing, Consultation and Display. 55 § 179.177 Flight Documentation.... 56 § 179.179 Automated Pre-Flight Information Systems for Briefing, Consultation, Flight Planning and Flight Documentation. 57 § 179.181 Meteorological information for Aircraft in Flight. 59 SUBPART K – INFORMATION FOR AIR TRAFFIC SERVICES, SEARCH AND RESCUE SERVICES AND AERONAUTICAL INFORMATION SERVICES...... 60 § 179.191 Applicability....60 § 179.193 Information for ATS Units. 60 § 179.195 Supply, dissemination and transmission arrangements to ATS Units. 60 § 179.197 Information for SAR Units. 61 § 179.199 Information for AIS provider....61 SUBPART L –USE OF COMMUNICATIONS TO EXCHANGE METEOROLOGICAL INFORMATION 63 § 179.201 Applicability....63 § 179.203 Requirements for Communications....63 § 179.205 Use of aeronautical fixed service communications and the public Internet....64 § 179.209 World area forecast system forecasts. 65 § 179.211 Use of Aeronautical Mobile Service Communications....65 § 179.213 Use of Aeronautical Data Link Service –D-VOLMET...... 66 § 179.215 Use of Aeronautical Broadcasting Service –VOLMET Broadcasts...... 66 SUBPART M – QUALITY MANAGEMENT SYSTEM 67 Page 3 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA General Authority of Civil Aviation [Non-Text] GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION § 179.221 Applicability....67 § 179.223 Quality Management System. 67 § 179.225 Customer Forum....69 § 179.227 Users and Customer Feedback.... 69 § 179.229 Meteorological Information Check after Aircraft Accident or Serious Incident. 69 § 179.231 Malfunctions and Erroneous Information Management.... 70 SUBPART N – RECORDS AND REPORTS.... 71 § 179.301 Document Retention.... 71 § 179.303 Promulgated Information Incident Reports.... 71 Page 4 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA العربيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION SUBPART A - GENERAL § 179.1 Applicability. This Part prescribes – (a) Rules governing the provision of meteorological (MET) services for air navigation in the Kingdom of Saudi Arabia (KSA) within the Jeddah FIR by a certified MET service provider that holds or is required to hold an Air Navigation Service Certificate (ANSC) under General Authority of Civil Aviation Regulation (GACAR) Part 170; and (b) Rules governing aircraft operators requiring meteorological service or changes in the meteorological services provided. § 179.3 Restrictions on a certified MET Service Provider. (a) Except as provided in GACAR 170 §170.1(d), no person may provide MET services in the KSA for air navigation and within the Jeddah FIR unless the person complies with the provisions of this Part and has been certificated by the President under GACAR Part 170 to provide such services. (b) Except as provided in GACAR Part 170, the certified MET service provider must comply with the limitations and provisions of their certificate, operations specifications, and manual prepared under Subpart C during the provision of meteorological service as defined by the President. (c) No meteorological service must be provided if: (1) required meteorological input data is unavailable or unreliable; (2) essential equipment performance does not meet specified standards; (3) required monitoring or verification systems are not operational; or (4) there is reasonable doubt about meteorological data integrity or accuracy. (d) The certification of a MET service provider must be considered as a formal arrangement between the President and the provider in the provision of defined meteorological services. (e) The National Center for Meteorology (NCM) is the aeronautical MET service provider and is certified to provide meteorological service for domestic and international air navigation in the KSA. Details of the certified meteorological service provider must be included in the KSA aeronautical information Page 5 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبقيه لالطبقيه من المحدني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION publication, in accordance with GACAR Part 175. (f) The certified MET service provider must describe the arrangements for the provision of meteorological services within the Jeddah FIR in the KSA Aeronautical Information Publication (KSA AIP). Note.— Detailed specifications concerning presentation and contents of the aeronautical information publication are defined in GACAR Part 175. § 179.5 Objective, determination and provision of meteorological service. (a) The objective of meteorological service for air navigation must be to contribute towards the safety, regularity and efficiency of air navigation. (b) The certified MET service provider must comply with the requirements of the WMO in respect of qualifications, competencies, education, and training of meteorological personnel providing service for domestic and international air navigation. § 179.7 Notifications Required from Operators. a) An operator requiring meteorological service or changes in existing meteorological service must notify, sufficiently in advance, the certified MET service provider concerned. The minimum amount of advance notice required must be as agreed between the certified MET service provider or Aerodrome meteorological office, or station, and the operator concerned. b) The certified MET service provider must be notified by the operator requiring service when: (1) New routes or new types of operations are planned; (2) Changes of a lasting character are to be made in scheduled operations; and (3) Other changes, affecting the provision of meteorological service, are planned. Such information must contain all details necessary for the planning of appropriate arrangements by the certified MET service provider. c) The certified MET service provider must make arrangements and coordination procedures with aircraft operators and users to: (1) establish suitable telecommunications facilities for obtaining meteorological information from aerodrome meteorological offices or other appropriate sources. Page 6 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبقيه لالطبقيه من المحدز General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION (2) notify the aerodrome meteorological office concerned: (i) of flight schedules; (ii) when non-scheduled flights are to be operated; and (iii) when flights are delayed, advanced or cancelled. d) The notification to the aerodrome meteorological office of individual flights must contain the following information except that, in the case of scheduled flights, the requirement for some or all of this information may be waived as agreed between the aerodrome meteorological office and the operator concerned: (1) aerodrome of departure and estimated time of departure; (2) destination and estimated time of arrival; (3) route to be flown and estimated times of arrival at, and departure from, any intermediate aerodrome(s); (4) alternate aerodromes needed to complete the operational flight plan and taken from the relevant list contained in the regional air navigation plan; (5) cruising level; (6) type of flight, whether under visual or instrument flight rules; (7) type of meteorological information requested for a flight crew member, whether flight documentation and/or briefing or consultation; and (8) time(s) at which briefing, consultation and/or flight documentation are required. e) The President must be notified of all arrangements and coordination procedures between the certified MET service provider and all aircraft operators and users. The President must also be notified when operators require new or changes to existing meteorological services. § 179.9 Coordination Requirements. (a) The certified MET service provider must establish systems and procedures for ensuring coordination between each of the following agencies: GACAR Part 179 Page 7 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبقيه من الم茱ني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION (1) General Authority of Civil Aviation (GACA); (2) Each aeronautical telecommunication service provider operating in accordance with GACAR Part 173; (3) Each aeronautical information service (AIS) provider operating in accordance with GACAR Part 175; (4) Each air traffic service provider (ATS) operating in accordance with GACAR Part 171; (5) Each search and rescue (SAR) authority operating in accordance with GACAR Part 177; (6) Aircraft operators; (7) The Saudi Arabian Armed Forces; (8) Each civil aerodrome operator and water aerodrome operator in the KSA operating in accordance with GACAR Part 137, 138 and 139; (9) Certified unmanned traffic management (UTM) service provider; and (10) Any other service providers or operators requesting MET Services. (b) The certified MET service provider must establish coordination procedures with System wide Information Management (SWIM) registry operators and information service providers to ensure meteorological information compatibility with automated air traffic management systems. The coordination must include data format standardization, service level agreements for information exchange, and incident response procedures for system interoperability issues. (c) All agreements and working arrangements must be submitted to the President for inclusion in the operation specifications. § 179.11 Regional Air Navigation Agreements. The certified MET service provider must coordinate with GACA when interacting with foreign States or foreign MET providers and when there are implications for Regional Air Navigation Agreements for which the KSA is a party. GACAR Part 179 Page 8 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA العربيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION § 179.13 Applicability of the Standards of the International Civil Aviation Organization and the World Meteorological Organization. (a) The certified MET service provider must provide services in full compliance with this Part and the applicable standards and technical specifications of: (1) ICAO Annex 3 Meteorological Service for International Air Navigation; (2) ICAO Procedures for Air Navigation Services — Meteorology (PANS-MET, Doc 10157); (3) WMO Technical Regulation, Volume I, General Meteorological Standards and Recommended Practices, (WMO-No 49, Vol. I); (4) WMO Technical Regulation, Volume II, Meteorological Service for International Air Navigation, (WMO-No 49, Vol. II); (5) Guide to Instruments and Methods of Observation (WMO-No. 8); and (6) Implementation of Quality Management Systems for National Meteorological and Hydrological Services and Other Relevant Service Provider (WMO-No. 1100). (b) In respect of qualifications, competencies, education and training of meteorological personnel providing service for domestic and international air navigation, the certified MET service provider must adopt: (1) the training and qualification requirements defined in WMO Implementation of Education and Training Standards in Meteorology and Hydrology, Volume I – Meteorology (WMO-No 1083); and (2) the WMO Technical Regulations Volume I — General Meteorological Standards and Recommended Practices, (WMO-No. 49, Vol I): (i) Part V — Qualifications and Competencies of Personnel Involved in the Provision of Meteorological (Weather and Climate) and Hydrological Services; (ii) Part VI — Education and Training of Meteorological Personnel; and (iii) Appendix A — Basic Instruction Packages. Page 9 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبق والطبق من المحدني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION § 179.15 Human Factors. (a) The certified MET service provider must ensure that the meteorological information supplied to the users is consistent with Human Factors principles and must be in forms that require a minimum of interpretation by these users. Note.— Guidance material on the application of Human Factors principles can be found in the ICAO Human Factors Training Manual (Doc 9683). (b) The certified MET service provider must ensure that the meteorological information supplied to the users listed in §179.9 is provided through information services consistent with (SWIM) principles. The information services must enable machine-to-machine interaction in a service-oriented architecture, facilitate automated data processing, and maintain data integrity throughout the information exchange process. Note 1.— In the context of (SWIM), the notion of information service addresses machine-to-machine interaction in a service-oriented architecture. Note 2.— Procedures on information services are contained in the ICAO Procedures for Air Navigation Services — Information Management (PANS-IM, Doc 10199). Note 3.— Guidance material on information services can be found in the ICAO Manual on System-wide Information Management Implementation (Doc 10039). §179.17 Site Requirements. The certified MET service provider must ensure that: (a) Each of its aerodrome meteorological offices, stations, and facilities is: (1) sited and configured in accordance with security measures designed to prevent unlawful or accidental interference; and (2) provided with suitable power supplies and means to ensure appropriate continuity of service. (b) Each weather observing station is installed and maintained in a technically appropriate position to ensure that the facility provides an accurate representation of the local and prevailing meteorological conditions. These observations must meet the operational desirable accuracy of measurement and observation as per ICAO PANS-MET, Doc 10157, Attachment A. Page 10 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبقيه للطبقيه من المميز General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION (c) Site security measures must prevent unlawful access and accidental interference with meteorological operations. Power supply arrangements must ensure service continuity during primary power failures through appropriate backup power systems. §179.19 Verification, Validation, Periodic Inspection, Testing, and Calibration. a) The certified MET service provider must ensure that all meteorological equipment is maintained to ensure required precision and accuracy levels are consistently achieved. The MET equipment maintenance records must document calibration results, performance verification, and any deviations from specified standards. b) The certified MET service provider must establish procedures for: (1) routine verification of meteorological information obtained and provided by the certified MET service provider; (2) periodic inspection of each of its aerodrome meteorological offices/stations; (3) periodic inspection, testing and calibration of each of its facilities; and (4) validating information, bulletins and messages that are exchanged internationally to ensure accuracy, integrity, formatting and timeliness requirements. c) The procedures required under §179.19 (a) must ensure that: (1) the systems required for the routine verification of meteorological information have the capability and integrity necessary for verifying the meteorological information; (2) appropriate inspection equipment and systems are available to personnel for the inspection of each aerodrome meteorological offices/stations; (3) appropriate inspection, measuring, and test equipment and systems are available to personnel for the inspection, testing, and calibration of each facility; (4) the inspection, measuring, and test equipment and systems have the precision and accuracy necessary for the inspections, measurements, and tests being carried out; and (5) all meteorological observing facilities are calibrated and configured so that the environmental sensors fitted or incorporated yield, as far as possible, reliable, accurate, and Page 11 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA العربيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION representative of meteorological information. Calibration standards must be traceable to national or international measurement standards. d) The certified MET service provider must ensure that digital meteorological information systems undergo regular validation to ensure IWXXM format compliance, data transmission accuracy, and system interoperability. The validation procedures must include end-to-end testing of automated data flows, verification of digital signature integrity, and assessment of system response times. Non-conformities must be documented and corrected within specified timeframes. e) The certified MET service provider must establish procedures for verification of meteorological information accuracy and release authorization. The personnel competence for information verification and release must be formally assessed and documented. f) The certified MET service provider must establish procedures for notification of operational status changes. When meteorological services are interrupted or degraded, appropriate NOTAM procedures must be followed, and affected users notified immediately. § 179.21 Inspections. The certified MET service provider must allow the President to make any inspections, at any time, in order to allow the President to determine compliance with the requirements of this Part. GACAR Part 179 Page 12 UNCONTROLLED DOCUMENT WHEN DOWNLOADED Consult the GACA website for current version VERSION 6.0 GACA الมาيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION SUBPART B – PERSONNEL § 179.31 Personnel Requirements. The certified MET service provider must employ, contract, or otherwise engage: (a) A senior person, acceptable to the President, identified for the purposes of this Part as the Director of Meteorological Services, who: (1) has the authority within the organization to ensure that all activities undertaken by the organization can be financed and carried out to meet applicable regulatory requirements; and (2) is responsible for ensuring that the organization complies with the requirements of this Part. (b) A senior person or persons, acceptable to the President, responsible to the Director of Meteorological Services for ensuring that the organization: (1) complies with its manual; and (2) establishes and implements a properly organized quality system. (c) Sufficient technical personnel to plan, operate, inspect, supervise, maintain the facilities listed in the manual, and certify all meteorological offices and facilities. The personnel allocation must be based on documented workload analysis and service requirements. § 179.33 Meteorological Personnel Qualifications. (a) The certified MET service provider must ensure that each person assigned duties as meteorological personnel is competent and holds appropriate qualifications to perform the duties that they are assigned. (b) The certified MET service provider must ensure that each person assigned duties as meteorological personnel has: (1) successfully completed an appropriate training program that is accepted by the President; and (2) has been assessed as competent through a formal process by a person who is qualified. GACAR Part 179 Page 13 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الมาيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION (c) The certified MET service provider must provide each person assigned duties as meteorological personnel a certificate containing the following: (1) name of the meteorological personnel; (2) a description of the functions that the person is authorized to perform; and (3) a description of the period during which the certificate is effective and valid. (d) The certified MET service provider must ensure that the training organized for the delivery of the certificate comprises: (1) a theory part as defined by the WMO; and (2) a practical part which must include on-the-job training where the trainee is under the supervision of a certified and experienced meteorological observer or forecaster in order to: (i) enable observing and forecast techniques to be practiced; and (ii) allow the trainee's competence to be assessed to meet the competency requirements for Aeronautical Meteorological Personnel as defined by the WMO Technical Regulations (WMO-No. 49). (e) The certified MET service provider must develop a periodic and comprehensive recurrent training program accepted by the President to ensure that each person assigned duties as meteorological personnel maintains the appropriate level of qualification. The established period must not exceed 18 months. (f) The certified MET service provider must ensure that meteorological personnel receive training on digital meteorological information systems, including IWXXM format interpretation, automated system operations, quality assurance procedures for digital data, and cybersecurity awareness relevant to meteorological information management. The competency assessments must include an evaluation of digital system “proficiency. (g) The certified MET service provider must establish procedures to assess and maintain the competence of all authorized meteorological personnel. Written evidence of personnel authorization must be maintained and made available for inspection. Competency assessments must be conducted at intervals not exceeding 18 months. (h) The certified MET service provider must develop and publish job descriptions for all technical staff Page 14 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA العربيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION assigned to provide MET services. Note.— The meteorological personnel qualifications must be based on the standards and recommended practices of ICAO (Annex 3 and PANS MET - Doc 10157) and the WMO as defined under § 179.13. § 179.35 Staffing Levels and Training. The certified MET service provider must: (a) Establish arrangements that define the person responsible and the process to be followed to ensure an adequate number of suitably trained and qualified staff are available in respect of MET services. (b) Define the method by which staffing levels are determined in relation to the MET services to be provided. (c) Establish arrangements that define the management responsibilities and process for ensuring adequate staff supervision. Arrangements must include the mechanisms that ensure only trained and competent staff undertake the provision of MET services. § 179.37 Human Performance. (a) The certified MET service provider must ensure that Human Factors and performance are applied in the provision of MET services. The following activities must be conducted: (1) mandating Human Factors input to specific tasks/projects; (2) raising awareness of Human Factors and initiating Human Factors training across all concerned departments in an appropriate manner; (3) keeping abreast of developments within Human Factors and applying this knowledge as appropriate. (4) considering Human Factors aspects in incident investigation. Note.— Guidance material on the application of Human Factors principles can be found in ICAO Human Factors Training Manual (Doc 9683). (b) The certified MET service provider must have processes and procedures to: (1) ensure that each person assigned duties as meteorological personnel is not under the influence GACAR Part 179 Page 15 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبق والطبق General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION of psychoactive substances or medication or suffering from any illness or injury to an extent that may impact their performance during the provision of aeronautical meteorological services; (2) retain evidence that the duty time set by the adopted rostering arrangements and scheduling are not exceeded and that non-duty period requirements are met; (3) ensure that assignment during unscheduled duties for meteorological personnel avoids extended periods of being awake; (4) familiarize its meteorological personnel with the principles of fatigue management; (5) ensure that variations from the duty time for addressing sudden, unforeseen operational circumstances will not impact the performance of meteorological personnel during the provision of aeronautical meteorological services. Page 16 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA العربيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION SUBPART C – MANUAL REQUIREMENTS § 179.41 General. This Subpart prescribes requirements for the certified MET service provider to prepare and maintain a manual covering all meteorological services provided in accordance with this Part and with the following WMO standards, recommended practices, and guidance: (a) Technical Regulation, Volume I, General Meteorological Standards and Recommended Practices, (WMO-No 49, Vol. I); (b) Technical Regulation, Volume II, Meteorological Service for International Air Navigation, (WMO-No 49, Vol. II); and (c) Implementation of Education and Training Standards in Meteorology and Hydrology, Volume I – Meteorology (WMO-No 1083). (d) Guide to Instruments and Methods of Observation (WMO-No. 8), § 179.43 Manual Contents. (a) The certified MET service provider must provide the President with a manual containing: (1) a statement of compliance with applicable regulations signed by the Director of Meteorological Services, on behalf of the organization confirming that: (i) the manual defines the organization and demonstrates its means and methods for ensuring ongoing compliance with this Part; and (ii) the manual, and all associated manuals, operating, and maintenance instructions, must be complied with by the organization's personnel at all times. (2) an organization chart showing the lines of responsibility of the senior persons and the staffing level; (3) a summary of the organization's staffing structure at each location listed under paragraph (a)(4); (4) a list of MET locations and facilities to be operated under the authority of the certified MET service provider; Page 17 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الมาيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION (5) a summary of the scope of activities at each location where the organization's personnel are based for the purpose of providing MET services under paragraph (a)(4); (6) a description of the initial training, qualifications, and certification of meteorological personnel; (7) the detailed procedures required under §179.19 for verification, validation, periodic inspection, testing and calibration, §179.227 for users and customer feedback and §179.223 regarding the quality management system; (8) detailed procedures to control, amend, and distribute the manual; (9) procedures for controlling all operational documentation, including technical standards, procedures, and manuals. Document control procedures must address revision approval processes, distribution control, and removal of obsolete versions using formal change management procedures; and (10) procedures for obtaining all necessary meteorological input data tailored to each service provided. Procedures must ensure adequacy of meteorological equipment, displays, and observing systems for all authorized services. (b) The manual must identify all output information for each meteorological service, establish output standards and formats, and include procedures to ensure compliance with these standards. Output verification procedures must be documented and implemented. (c) Each manual, and all of its revisions, must be acceptable to the President. (d) The certified MET service provider must: (1) ensure that its manual is amended, as required, to maintain an up-to-date description of the certified MET service provider organization, services and facilities; (2) ensure that any amendments made to its manual meet the applicable requirements of this Part; (3) comply with the manual amendment procedure contained in its manual; (4) ensure that each amendment to its manual is accepted by the President; and (5) make such amendments to its manual as the President may consider necessary in the interests of aviation safety. Page 18 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA العربيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION § 179.45 Local observing and reporting procedures. The certified MET service provider must ensure that local observing and reporting procedures: (a) Are established for each aerodrome meteorological observation; (b) Include the way in which observations are conducted, recorded, and disseminated both within and beyond the aerodrome, including any necessary backup arrangements; (c) Include working arrangements to ensure that observers obtain full information regarding the weather to be expected during the period of their duty/watch. This may be accomplished by a study of forecasts and charts routinely supplied by the designated watch office; and (d) Include a description of recurrent training to maintain the competency of assigned meteorological personnel. Page 19 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED Consult the GACA website for current version VERSION 6.0 GACA العربيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION SUBPART D – GLOBAL SYSTEMS, SUPPORTING CENTRES AND METEOROLOGICAL OFFICES § 179.51 Applicability. This Subpart prescribes the requirements related to the World Area Forecast System, Aerodrome Meteorological services, Meteorological Watch Office services, advisory information on volcanic ash and tropical cyclones, and space weather phenomena. § 179.53 World Area Forecast Centers (WAFC) within the framework of the world area forecast system. (a) The certified MET service provider must disseminate the following information received from the world area forecast center (WAFC): (1) upper wind; (2) upper-air temperature and humidity; (3) geopotential altitude of flight levels; (4) flight level and temperature of tropopause; (5) direction, speed and flight level of maximum wind; (6) cumulonimbus clouds; (7) icing; (8) turbulence; (9) significant weather (SIGWX) phenomena; and (10) global forecasts of significant weather (SIGWX) phenomena. (b) The certified MET service provider must disseminate: Page 20 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبقيه من المحدني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION (1) the forecasts referred to in (a) in digital form to the users; (2) received information concerning the release of radioactive materials into the atmosphere from its associated WMO regional specialized meteorological center (RSMC) for the provision of transport model products for radiological environmental emergency response, in order to include the information in SIGWX forecasts; and (c) The certified MET service provider must establish and maintain contact with the associated WAFC for the collection of information on volcanic activity in order to make available information on volcanic eruptions in SIGWX forecasts to the users. § 179.55 Aerodrome Meteorological Offices. (a) The certified MET service provider must have aerodrome meteorological offices which must be adequate for the provision of the meteorological service required to satisfy the needs of domestic and international air navigation. (b) An aerodrome meteorological office must carry out all or some of the following functions as necessary to meet the needs of flight operations at the aerodrome: (1) prepare and/or obtain forecasts and other relevant information for flights with which it is concerned; the extent of its responsibilities to prepare forecasts must be related to the local availability and use of en-route and aerodrome forecast material received from other aerodrome meteorological offices; (2) prepare and/or obtain forecasts of local meteorological conditions; (3) maintain a continuous survey of meteorological conditions over the aerodromes for which it is designated to prepare forecasts; (4) provide briefing, consultation and flight documentation to flight crew members and/or other flight operations personnel; (5) supply other meteorological information to aeronautical users; (6) display the available meteorological information; (7) exchange meteorological information with other aerodrome meteorological offices; and (8) supply information received on pre-eruption volcanic activity, a volcanic eruption or Page 21 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العام للطبق واللتراثن المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION volcanic ash cloud, to its associated air traffic services unit, aeronautical information service unit and MWO as agreed between the meteorological service provider, aeronautical information service provider and air traffic service provider concerned. (c) The aerodrome meteorological offices at which flight documentation is required, as well as the areas to be covered, must be described in the KSA AIP. (d) The aerodromes for which landing forecasts are required will be determined by regional air navigation agreement (ICAO Regional Air Navigation Agreements (Doc 7030 / ANPs)). (e) For aerodromes without an aerodrome meteorological office located at the aerodrome: (1) the certified MET service provider must designate one or more aerodrome meteorological offices to supply meteorological information as required; and (2) the certified MET service provider must establish means by which such information can be supplied to the aerodromes concerned. § 179.57 Meteorological Watch Offices (MWOs). (a) The certified MET service provider must establish one or more MWO within the flight information regions or control areas for which they have been assigned MET responsibilities by the President. (b) Each MWO must: (1) maintain watch over meteorological conditions affecting flight operations within its area of responsibility; (2) prepare SIGMET and other information relating to its area of responsibility; (3) supply SIGMET information and, as required, other meteorological information to associated air traffic services units; (4) disseminate SIGMET information; (5) when required by regional air navigation agreements: (i) prepare AIRMET information related to its area of responsibility; GACAR Part 179 Page 22 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبق واللحن General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION (ii) supply AIRMET information to associated air traffic services units; and (iii) disseminate AIRMET information. (c) Each MWO must supply information received on pre-eruption volcanic activity, a volcanic eruption and volcanic ash cloud for which a SIGMET has not already been issued, to its associated area control center (ACC)/ flight information center (FIC), as agreed between the certified MET service provider and the ATS service provider, and to its associated VAAC as determined by regional air navigation agreement; (d) Each MWO must supply information received concerning the release of radioactive materials into the atmosphere, in the area for which it maintains watch or adjacent areas, to its associated ACC/FIC, as agreed between the certified MET service provider and the appropriate ATS service provider, and to the AIS provider, as agreed between the certified MET service provider and the aeronautical information service (AIS) service provider. The information must comprise location, date and time of the release, and forecast trajectories of the radioactive materials, The information must comprise location, date and time of the release, and forecast trajectories of the radioactive materials; (e) Each MWO must maintain a continuous watch, however in areas with a low density of traffic, the watch may be restricted to the period relevant to expected flight operations; (f) The boundaries of the area over which meteorological watch is to be maintained by an MWO must be coincident with the boundaries of an FIR or a CTA or a combination of FIRs and/or CTAs; and (g) Each Meteorological Watch Office (MWO) must coordinate, as necessary, the content of SIGMET messages with neighboring MWOs when an en-route weather phenomenon extends or is expected to extend beyond its area of responsibility, to ensure consistency and harmonization of SIGMET information. Note.— Guidance on the bilateral or multilateral coordination between MWOs of Contracting States for the provision of SIGMET can be found in the ICAO Manual of Aeronautical Meteorological Practice (Doc 8896). § 179.59 Volcanic Ash. The certified MET service provider must: (a) Ensure that any received notification on volcanic eruptions or volcanic ash is made available to the users. (b) Disseminate any received advisory information regarding the extent and forecast movement of the Page 23 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبق واللحن General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION volcanic ash cloud to: (1) MWOs, area control centers and flight information centers; (2) international NOTAM offices, and centers designated in KSA AIP for the operation of aeronautical fixed service Internet-based services; and (3) airlines requiring the advisory information through the AFTN address provided specifically for this purpose. (c) Disseminate any received updated advisory information to the MWOs, area control centers, and flight information centers. (d) For significant volcanic ash “clouds” on which VAACs have issued forecasts of quantitative volcanic ash concentration information for a volcanic ash “cloud”, the certified MET service provider must disseminate all the details on the quantitative volcanic ash concentration information for the volcanic ash “cloud” to users, as required under this Part. The quantitative information must include concentration levels, flight level ranges, and forecast trajectories with specified confidence intervals. Note 1.— The VAACs in a position to provide quantitative volcanic ash concentration information are included in the ICAO Handbook on the International Airways Volcano Watch (IAVW) — Operational Procedures and Contact List (Doc 9766). Note 2.— Significant volcanic ash “clouds” in this context means an ash “cloud” that poses a widespread impact to aircraft operations and air navigation. Guidance on the criteria is provided in the ICAO Handbook on the International Airways Volcano Watch (IAVW) — Operational Procedures and Contact List (Doc 9766). Note 3.— Back-up procedures to be used in case of interruption of the operation of a VAAC are included in the ICAO Handbook on the International Airways Volcano Watch (IAVW) — Operational Procedures and Contact List (Doc 9766). § 179.61 Tropical Cyclone Advisory Centers (TCAC). The certified MET service provider must: (a) Ensure any received information on the development of tropical cyclones is made available to the users. (b) Disseminate any received advisory information concerning the position of the cyclone center, Page 24 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبقيه للطبقيه وتم الحضري General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION changes in its intensity at the time of observation, its direction and speed of movement, central pressure and maximum surface wind near the center; to: (1) MWOs, and; (2) centers designated by regional air navigation agreement for the operation of aeronautical fixed service satellite distribution systems. (c) Disseminate any received updated advisory information for each tropical cyclone, as necessary, but at least every six hours. § 179.63 Space Weather Centers (SWXC). (a) The certified MET service provider must take the required measures to: (1) receive from the designated Space Weather Centers (SWXC) any advisory information on space weather phenomena affecting the Jeddah FIR; (2) ensure that any received advisory information on space weather phenomena affecting the Jeddah FIR is made available to the users; (3) Disseminate any received advisory information regarding the extent, severity, and duration of the space weather phenomena that have an impact in the following areas: (i) high frequency (HF) radio communications; (ii) communications via satellite; (iii) GNSS-based navigation and surveillance; and (iv) radiation exposure at flight levels. (4) Ensure that the advisory information referred to in (a)(1) is disseminated to: (i) area control centers, flight information centers, and aerodrome meteorological offices which may be affected; and (ii) international NOTAM offices and centers designated by regional air navigation agreement for the operation of aeronautical fixed service Internet-based services. GACAR Part 179 Page 25 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA العربيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION (5) Disseminate any updated advisory information on space weather phenomena, as necessary, but at least every six hours until such time as the space weather phenomena are no longer detected and/or are no longer expected to have an impact. (b) The certified MET service provider who accepted the responsibility for providing a regional space weather center (SWXC) within the framework of the space weather information service, must arrange for that center to support the global SWXCs in their responsibilities as defined under ICAO Annex 3 Chapter 3. Page 26 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED Consult the GACA website for current version VERSION 6.0 GACA الมาيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION SUBPART E – Aerodrome meteorological observational information § 179.71 Applicability. This Subpart prescribes the requirements for meteorological observations and reports. It incorporates and adopts by reference ICAO Procedures for Air Navigation Services — Meteorology PANS-MET, Doc 10157), Chapter 2. § 179.73 Aeronautical Meteorological Stations and Observations. (a) The certified MET service provider must establish, where necessary, aerodrome aeronautical meteorological stations. An aeronautical meteorological station may be a separate station or may be combined with a synoptic station. Note.— Aeronautical meteorological stations may include sensors installed outside the aerodrome, where considered justified, by the certified MET service provider to ensure the compliance of meteorological service for air navigation with the provisions of this Part. (b) Aeronautical meteorological stations must make routine observations at fixed intervals. At aerodromes, the routine observations must be supplemented by special observations whenever specified changes occur in respect of surface wind, visibility, runway visual range, present weather, clouds and/or air temperature. (c) The certified MET service provider must arrange for its aeronautical meteorological stations to be inspected at sufficiently frequent intervals to ensure that a high standard of observation is maintained, including instruments and all their indicators are functioning correctly, and that the exposure of the instruments has not changed significantly. Note.— Guidance on the inspection of aeronautical meteorological stations including the frequency of inspections is given in the ICAO Manual on Automatic Meteorological Observing Systems at Aerodromes (Doc 9837). (d) At aerodromes with runways intended for Category II and III instrument approach and landing operations, automated equipment for measuring or assessing, as appropriate, and for monitoring and remote indicating of surface wind, visibility, runway visual range, height of cloud base, air and dew-point temperatures and atmospheric pressure must be installed to support approach and landing and takeoff operations. These devices must be integrated automatic systems for acquisition, processing, dissemination and display in real time of the meteorological parameters affecting landing and takeoff operations. The design of integrated automatic systems must observe Human Factors principles and include back-up procedures. Page 27 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الมาيه العامه للطيران المضني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION Note 1.— Categories of precision approach and landing operations are defined in ICAO Annex 6 – Operation of Aircraft, Part I – International Commercial Air Transport – Aeroplanes. Note 2.— Guidance material on the application of Human Factors principles can be found in the ICAO Human Factors Training Manual (Doc 9683). (e) Unless otherwise accepted by the President, at aerodromes with runways intended for Category I instrument approach and landing operations, automated equipment for measuring or assessing, as appropriate, and for monitoring and remote indicating of surface wind, visibility, runway visual range, height of cloud base, air and dew-point temperatures and atmospheric pressure must be installed to support approach and landing and takeoff operations. These devices must be integrated automatic systems for acquisition, processing, dissemination, and display in real time of the meteorological parameters affecting landing and take-off operations. The design of integrated automatic systems must observe Human Factors principles and include back-up procedures. (f) Where an integrated semi-automatic system is used for the dissemination/display of meteorological information, it must be capable of accepting the manual insertion of data covering those meteorological elements which cannot be observed by automatic means, and the observations must form the basis for the preparation of reports to be disseminated at the aerodrome of origin and of reports to be disseminated beyond the aerodrome of origin. (g) The observations must form the basis for the preparation of reports to be disseminated at the aerodrome of origin and of reports to be disseminated beyond the aerodrome of origin. <PAGE>Note.— Guidance on the operationally desirable accuracy of measurement or observation is given contained in Attachment A to the PANS-MET (Doc 10157). (i) Owing to the variability of meteorological elements in space and time, to limitations of forecasting techniques and to limitations caused by the definitions of some of the elements, the specific value of any of the elements given in a forecast must be understood by the recipient to be the most probable value which the element is likely to assume during the period of the forecast. Similarly, when the time of occurrence or change of an element is given in a forecast, this time must be understood to be the most probable time. Note.— Guidance on the operationally desirable accuracy of forecasts is given contained in Attachment B to the PANS-MET (Doc 10157). Page 28 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA الطبق العاميه للطبق بالراحن المضارع General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION (j) The meteorological instruments used at an aerodrome must be situated in such a way as to supply data which are representative of the area for which the measurements are required. Note.— Specifications concerning the siting of equipment and installations on operational areas, aimed at reducing the risk of damage to aircraft to a minimum, are contained in Annex 14 – Aerodromes, Volume I – Aerodrome Design and Operations, Chapter 9. (k) Meteorological instruments at aeronautical meteorological stations must be exposed, operated and maintained in accordance with the practices, procedures and specifications promulgated by the World Meteorological Organization (WMO). Note.— Practices, procedures and specifications of WMO are contained in the Guide to Instruments and Methods of Observation (WMO-No. 8), Volume I – Measurement of Meteorological Variables, Volume III – Observing Systems; and Volume V – Quality Assurance and Management of Observing Systems. (1) The observers at an aerodrome must be located, in so far as is practicable, so as to supply data which are representative of the area for which the observations are required. § 179.75 Agreement Between the certified MET Service Provider and the ATS Service Provider. (a) An agreement between the certified MET service provider and the ATS service provider must be established to cover, among other things: (1) the provision in air traffic services units of displays related to integrated automatic systems; (2) the calibration and maintenance of these displays/instruments; (3) the use to be made of these displays/instruments by air traffic services personnel; (4) as and where necessary, supplementary visual observations (for example, of meteorological phenomena of operational significance in the climb-out and approach areas) if and when made by air traffic services personnel to update or supplement the information supplied by the meteorological office/station; (5) meteorological information obtained from aircraft taking off or landing (for example, on wind shear); and (6) if available, meteorological information obtained from ground weather radar. Page 29 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED Consult the GACA website for current version VERSION 6.0 GACA الطبق العاميه للطبقيه من الم茱ز General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION (b) The agreement between the certified MET service provider and the ATS service provider must be complemented by local agreements signed between the aerodrome meteorological office or station and the ATS Unit providing services at the aerodrome to ensure effective coordination. Note.1— Guidance on the subject of coordination between the certified MET service provider and the ATS service provider is contained in the ICAO Manual on Coordination between Air Traffic Services, Aeronautical Information Services and Aeronautical Meteorological Services (Doc. 9377). Note.2— The template of the local agreement is defined by a GACA Advisory Circular (to support effective implementation of a local agreement between an aerodrome MET Office/Station and an ATS Unit where ATS is provided). § 179.77 Routine Observations and Reports. (a) At aerodromes, routine observations must be made throughout the 24 hours each day, except as otherwise agreed between the certified MET service provider, the ATS service provider and the operators concerned. Such observations must be made at intervals of one hour or at intervals of one half-hour as described in the KSA AIP. At other aeronautical meteorological stations, such observations must be made as determined by the certified MET service provider taking into account the requirements of air traffic services units and aircraft operations. The President must be notified on any agreement for the provision of routine observations. Note.— Procedures and technical specifications related to this section are contained in the PANS-MET (Doc 10157), Chapter 2. (b) Reports of routine observations must be issued as: (1) local routine reports, only for dissemination at the aerodrome of origin, (intended for arriving and departing aircraft); and Note.— Technical specifications of the issuance of local routine reports are contained in the PANS-MET (Doc 10157), Chapter 2. (2) METAR for dissemination beyond the aerodrome of origin (mainly intended for flight planning, VOLMET broadcasts and D-VOLMET). Note.— Technical specifications of the issuance and the dissemination of METAR are contained in the PANS-MET (Doc 10157), Chapter 2. (c) At aerodromes that are not operational throughout 24 hours in accordance with (a), METAR must be issued prior to the aerodrome resuming operations in accordance with regional air navigation Page 30 GACAR Part 179 UNCONTROLLED DOCUMENT WHEN DOWNLOADED VERSION 6.0 Consult the GACA website for current version GACA العربيه العامه للطيران المضاني General Authority of Civil Aviation GACAR PART 179 – METEOROLOGICAL SERVICE FOR AIR NAVIGATION agreement. Note.—Meteorological information used in ATIS (voice-ATIS and D-ATIS) is to be extracted from the local routine report by the certified ATS provider, in accordance with GACAR Part 171 §171.673 § 179.79 Special Observations and Reports. (a) A list of criteria for special observations must be established by the certified MET service provider in consultation with the ATS service provider, operators and others concerned, and in accordance with Annex 3 SARPs. Note.— Procedures and technical specifications related to this section are contained in the PANS-MET (Doc 10157), Chapter 2. (b) Reports of special observations must be issued as: (1) local special reports, only for dissemination at the aerodrome of origin (intended for arriving and departing aircraft); and Note.— Technical specifications for the issuance of local routine reports are contained in the PANS-MET (Doc 10157), Chapter 2. (2) SPECI for dissemination beyond the aerodrome of origin (mainly intended for flight planni …(83,537 more chars)