Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 1095

d) nil when the turbulence index is 0 (i.e. the peak value of the EDR is less than 0.1). Note.— The EDR is an aircraft-independent measure of turbulence. However, the relationship between the EDR index and the perception of turbulence is a function of aircraft type, and the mass, altitude, configuration and airspeed of the aircraft. 2.6.3 Special air-reports Special air-reports on turbulence shall be made during any phase of the flight whenever the peak value exceeds the EDR 2007/70/II. szám Appendix 4 Annex 3 — Meteorological Service for International Air Navigation APP 4-3 25/11/04 value of 0.5. The special air-report on turbulence shall be made with reference to the 1-minute period immediately preceding the observation. Both the average and peak value of turbulence shall be observed. The average and peak values shall be reported in terms of a turbulence index as indicated in the shaded part of Table A4-1. Special air-reports shall be issued every minute until such time that the peak values of turbulence fall below the EDR value of 0.5. 2.7 Humidity The humidity shall be reported as the relative humidity, rounded to the nearest whole per cent. Note.— The ranges and resolutions for the meteorological elements included in air-reports are shown in Table A4-4. 3. EXCHANGE OF AIR-REPORTS 3.1 Responsibilities of the meteorological watch offices 3.1.1 The meteorological watch offices shall assemble the routine air-reports received by voice communications and shall disseminate them to WAFCs and other meteorological offices in accordance with regional air navigation agreement. Note.— The exchange of collectives on an hourly basis may be found desirable when reports are numerous. 3.1.2 The meteorological watch office shall transmit without delay the special air-reports received by voice communications to WAFCs. 3.1.3 The meteorological watch office shall transmit without delay special air-reports of pre-eruption volcanic activity, a volcanic eruption or volcanic ash cloud received to the associated VAACs. 3.1.4 When a special air-report is received at the meteorological watch office but the forecaster considers that the phenomenon causing the report is not expected to persist and, therefore, does not warrant issuance of a SIGMET, the special air-report shall be disseminated in the same way that SIGMET messages are disseminated in accordance with Appendix 6, 1.2.1, i.e. to meteorological watch offices, WAFCs, and other meteorological offices in accordance with regional air navigation agreement. 3.2 Responsibilities of world area forecast centres Air-reports received at WAFCs shall be further disseminated as basic meteorological data. Note.— The dissemination of basic meteorological data is normally carried out on the WMO global telecommunication system. 3.3 Supplementary dissemination of air-reports Recommendation.— Where supplementary dissemination of air-reports is required to satisfy special aeronautical or meteorological requirements, such dissemination should be arranged between the meteorological authorities concerned. 3.4 Format of air-reports Air-reports shall be exchanged in the format in which they are received, except that when voice communications are used, if the position is given by reference to an ATS reporting point, it shall be converted, by the meteorological watch office, into the corresponding latitude and longitude. 4. SPECIFIC PROVISIONS RELATED TO REPORTING WIND SHEAR AND VOLCANIC ASH 4.1 Reporting of wind shear 4.1.1 Recommendation.— When reporting aircraft observations of wind shear encountered during the climb-out and approach phases of flight, the aircraft type should be included. 4.1.2 Recommendation.— Where wind shear conditions in the climb-out or approach phases of flight were reported or forecast but not encountered, the pilot-in-command should advise the appropriate air traffic services unit as soon as practicable unless the pilot-in-command is aware that the appropriate air traffic services unit has already been so advised by a preceding aircraft. 4.2 Post-flight reporting of volcanic activity Note.— The detailed instructions for recording and reporting volcanic activity observations are given in the PANS- ATM (Doc 4444), Appendix 1. 4.2.1 On arrival of a flight at an aerodrome, the completed report of volcanic activity shall be delivered by the operator or a flight crew member, without delay, to the aerodrome meteorological office, or if such office is not easily accessible to arriving flight crew members, the completed form shall be dealt with in accordance with local arrangements made by the meteorological authority and the operator. 4.2.2 The completed report of volcanic activity received by a meteorological office shall be transmitted without delay to the meteorological watch office responsible for the provision of meteorological watch for the flight information region in which the volcanic activity was observed. 2007/70/II. szám Annex 3 — Meteorological Service for International Air Navigation Appendix 4 25/11/04 APP 4-4 Table A4-1. Turbulence index to be reported as a function of the average and peak value of turbulence (Classes corresponding to severe turbulence are shaded) Table A4-2. Time of occurrence of the peak value to be reported Peak value of turbulence Average value of turbulence EDR (m2/3 s–1) Nil report EDR (m2/3 s–1) < 0. 1 0.1 – 0.2 0.2 – 0.3 0.3 – 0.4 0.4 – 0.5 0.5 – 0.8 > 0.8 < 0.1 0.1 – 0.2 0.2 – 0.3 0.3 – 0.4 0.4 – 0.5 0.5 – 0.8 > 0.8 Nil report Peak value of turbulence occurring during the one-minute period Value to be reported 0 – 1 1 – 2 2 – 3 13 – 14 14 – 15 No timing information available 2007/70/II. szám Appendix 4 Annex 3 — Meteorological Service for International Air Navigation APP 4-5 25/11/04 Table A4-3. Template for the special air-report (downlink) Key: M = mandatory, part of every message C = inclusion conditional; included whenever available Note.— Message to be prompted by the pilot-in-command. Currently only the condition “SEV TURB” can be automated (see 2.6.3). Notes.—

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