Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 1142

b) at transonic levels and supersonic cruising levels: turbulence — moderate turbulence MOD TURB — severe turbulence SEV TURB cumulonimbus — isolated cumulonimbus ISOL CB — occasional cumulonimbus OCNL CB — frequent cumulonimbus FRQ CB hail — hail GR volcanic ash — volcanic ash VA (+ volcano name, (irrespective of altitude) if known) 1.1.5 SIGMET information shall not contain unnecessary descriptive material. In describing the weather phenomena for which the SIGMET is issued, no descriptive material 2007/70/II. szám Annex 3 — Meteorological Service for International Air Navigation Appendix 6 25/11/04 APP 6-2 additional to that given in 1.1.4 shall be included. SIGMET information concerning thunderstorms or a tropical cyclone shall not include references to associated turbulence and icing. 1.1.6 Recommendation.— Meteorological watch offices in a position to do so should issue SIGMET information for volcanic ash cloud and tropical cyclones in graphical format using the WMO BUFR code form, in addition to the issuance of this SIGMET information in abbreviated plain language in accordance with 1.1.1. Note.— The BUFR code form is contained in WMO Publication No. 306, Manual on Codes, Volume I.2, Part B — Binary Codes. 1.2 Dissemination of SIGMET messages 1.2.1 SIGMET messages shall be disseminated to meteorological watch offices, WAFCs and to other meteorological offices in accordance with regional air navigation agreement. SIGMET messages for volcanic ash shall also be disseminated to VAACs. 1.2.2 SIGMET messages shall be disseminated to international OPMET data banks and the centres designated by regional air navigation agreement for the operation of aeronautical fixed service satellite distribution systems, in accordance with regional air navigation agreement. 2. SPECIFICATIONS RELATED TO AIRMET INFORMATION 2.1 Format of AIRMET messages 2.1.1 The content and order of elements in an AIRMET message shall be in accordance with the template shown in Table A6-1. 2.1.2 The sequence number referred to in the template in Table A6-1 shall correspond with the number of AIRMET messages issued for the flight information region since 0001 UTC on the day concerned. The meteorological watch offices whose area of responsibility encompasses more than one FIR and/or CTA shall issue separate AIRMET messages for each FIR and/or CTA within its area of responsibility. 2.1.3 The flight information region shall be divided in sub-areas, as necessary. 2.1.4 In accordance with the template in Table A6-1, only one of the following phenomena shall be included in an AIRMET message, using the abbreviations as indicated below: at cruising levels below flight level 100 (or below flight level 150 in mountainous areas, or higher, where necessary): — surface wind speed – widespread mean surface SFC WSPD wind speed above (+ wind speed and units) 60 km/h (30 kt) — surface visibility – widespread areas affected SFC VIS by reduction of (+ visibility) visibility to less than (+ one of the following 5 000 m, including the weather phenomena weather phenomenon or combinations thereof: causing the reduction of BR, DS, DU, DZ, FC, visibility FG, FU, GR, GS, HZ, IC, PL, PQ, RA, SA, SG, SN, SQ, SS or VA) — thunderstorms – isolated thunderstorms ISOL TS without hail – occasional thunderstorms OCNL TS without hail – isolated thunderstorms ISOL TSGR with hail – occasional thunderstorms OCNL TSGR with hail — mountain obscuration – mountains obscured MT OBSC — cloud – widespread areas of broken or overcast cloud with height of base less than 300 m (1 000 ft) above ground level: – broken BKN CLD (+ height of the base and top and units) – overcast OVC CLD (+ height of the base and top and units) – cumulonimbus clouds which are: – isolated ISOL CB – occasional OCNL CB – frequent FRQ CB – towering cumulus clouds which are: – isolated ISOL TCU – occasional OCNL TCU – frequent FRQ TCU — icing – moderate icing MOD ICE (except for icing in convective clouds) 2007/70/II. szám Appendix 6 Annex 3 — Meteorological Service for International Air Navigation APP 6-3 25/11/04 — turbulence – moderate turbulence MOD TURB (except for turbulence in convective clouds) — mountain wave – moderate mountain wave MOD MTW 2.1.5 AIRMET information shall not contain unnecessary descriptive material. In describing the weather phenomena for which the AIRMET is issued, no descriptive material additional to that given in 2.1.4 shall be included. AIRMET information concerning thunderstorms or cumulonimbus clouds shall not include references to associated turbulence and icing. Note.— The specifications for SIGMET information which is also applicable to low-level flights are given in 1.1.4. 2.2 Dissemination of AIRMET messages 2.2.1 Recommendation.— AIRMET messages should be disseminated to meteorological watch offices in adjacent flight information regions and to other meteorological offices, as agreed by the meteorological authorities concerned. 2.2.2 Recommendation.— AIRMET messages should be transmitted to international operational meteorological data banks and the centres designated by regional air navigation agreement for the operation of aeronautical fixed service satellite distribution systems, in accordance with regional air navigation agreement. 3. SPECIFICATIONS RELATED TO SPECIAL AIR-REPORTS Note.— This appendix deals with the uplink of special airreports. The general specifications related to special airreports are in Appendix 4. 3.1 Recommendation.— Special air-reports should be uplinked for 60 minutes after their issuance. 3.2 Recommendation.— Information on wind and temperature included in automated special air-reports should not be uplinked to other aircraft in flight. 4. DETAILED CRITERIA RELATED TO SIGMET AND AIRMET MESSAGES AND SPECIAL AIR-REPORTS (UPLINK) 4.1 Identification of the flight information region Recommendation.— In cases where the airspace is divided into a flight information region (FIR) and an upper flight information region (UIR), the SIGMET should be identified by the location indicator of the air traffic services unit serving the FIR. Note.— The SIGMET message applies to the whole airspace within the lateral limits of the FIR, i.e. to the FIR and to the UIR. The particular areas and/or flight levels affected by the meteorological phenomena causing the issuance of the SIGMET are given in the text of the message. 4.2 Criteria related to phenomena included in SIGMET and AIRMET messages and special air-reports (uplink) 4.2.1 Recommendation.— An area of thunderstorms and cumulonimbus clouds should be considered:

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