Publication: Magyar Közlöny
Issue: MK-2009-104 (Year: 2009, Number: 104)
Era: 2004-2010
Section: 
Paragraph Index: 381

3. Abbreviations used to describe clouds Conversion of knots into kilometres per hour knots km/h knots * In-flight documentation for flights operating up to FL100. This symbol refers to “squall line”. ** The following information should be included at the side of the chart: radioactive materials symbol; latitude/longitude of accident site; date and time of accident; check NOTAM for further information. *** The following information should be included at the side of the chart: volcanic eruption symbol; name and international number of volcano (if known); latitude/longitude; date and time of the first eruption (if known); Check SIGMETs and NOTAM or ASHTAM for volcanic ash. **** This symbol does not refer to icing due to precipitation coming into contact with an aircraft which is at a very low temperature. NOTE: Height indications between which phenomena are expected, top above base as per chart legend.

Source: https://magyarkozlony.hu/hivatalos-lapok/1f7c6b0e16b4b71a92e5ad24416008bbe2e26aab/dokumentumok/710811d1f7f958a2990684d0cbf918e84f5497e5/letoltes