Publication: Magyar Közlöny
Issue: MK-2009-104 (Year: 2009, Number: 104)
Era: 2004-2010
Section: 
Paragraph Index: 319

k) QNH and, when applicable, QFE (QFE included only in local routine and special reports). Note.— The location indicators referred to under b) and their significations are published in Location Indicators (Doc 7910). 4.5.2 Recommendation.— In addition to elements listed under 4.5.1 a) to k), local routine and special reports and METAR and SPECI should contain supplementary information to be placed after element k). 4.5.3 Optional elements included under supplementary information shall be included in METAR and SPECI in accordance with regional air navigation agreement. 4.6 Observing and reporting meteorological elements 4.6.1 Surface wind 4.6.1.1 The mean direction and the mean speed of the surface wind shall be measured, as well as significant variations of the wind direction and speed, and reported in degrees true and kilometres per hour (or knots), respectively. 4.6.1.2 Recommendation.— When local routine and special reports are used for departing aircraft, the surface wind observations for these reports should be representative of conditions along the runway; when local routine and special reports are used for arriving aircraft, the surface wind observations for these reports should be representative of the touchdown zone. 4.6.1.3 Recommendation.— For METAR and SPECI, the surface wind observations should be representative of conditions above the whole runway where there is only one runway and the whole runway complex where there is more than one runway. 4.6.2 Visibility 4.6.2.1 The visibility as defined in Chapter 1 shall be measured or observed, and reported in metres or kilometres. Note.— Guidance on the conversion of instrument readings into visibility is given in Attachment D. 4.6.2.2 Recommendation.— When local routine and special reports are used for departing aircraft, the visibility observations for these reports should be representative of conditions along the runway; when local routine and special reports are used for arriving aircraft, the visibility observations for these reports should be representative of the touchdown zone of the runway. 4.6.2.3 Recommendation.— For METAR and SPECI, the visibility observations should be representative of the aerodrome. Chapter 4 Annex 3 — Meteorological Service for International Air Navigation 4-5 7/11/07 4.6.3 Runway visual range Note.— Guidance on the subject of runway visual range is contained in the Manual of Runway Visual Range Observing and Reporting Practices (Doc 9328). 4.6.3.1 Runway visual range as defined in Chapter 1 shall be assessed on all runways intended for Category II and III instrument approach and landing operations. 4.6.3.2 Recommendation.— Runway visual range as defined in Chapter 1 should be assessed on all runways intended for use during periods of reduced visibility, including:

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