(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) (2) Issued:20171207/2350Z (3) Volcano:Klyuchevskoy (CAVW #300260) (4) Current aviation colour code:ORANGE (5) Previous aviation colour code:orange (6) Source:KVERT (7) Notice Number:2017-259 (8) Volcano Location:N 56 deg 3 min E 160 deg 38 min (9) Area:Kamchatka, Russia (10) Summit Elevation:15580 ft (4750 m)(11) Volcanic Activity Summary:A gas-steam with some amount of ash activity of the volcano continues. Ash plume drift for about 86 km to the east-south-east from the volcano.\n\nActivity of the volcano continues. Ongoing activity could affect low-flying aircraft. (12) Volcanic cloud height:13120 ft (4000 m) AMSL Time and method of ash plume/cloud height determination: 20171207/2211Z – NOAA 18 (4m5)(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 53 mi (86 km)\nDirection of drift of ash plume/cloud of the volcano: ESE / azimuth 108 deg \nTime and method of ash plume/cloud determination: 20171207/2211Z – NOAA 18 (4m5)(14) Remarks:(15) Contacts: Anton A. Nuzhdaev, IVS FEB RAS\nenvi@kscnet.ru \n\nDuty scientist: +79622825253 (16) Next Notice:A new VONA will be issued if conditions change significantly or the colour code is changed. VONAs are posted at http://www.kscnet.ru/ivs/kvert/index_eng.php.\n\nIn Russia, KVERT, on behalf of the Institute of Volcanology and Seismology (IVS) FEB RAS, is responsible for providing information on volcanic activity to international air navigation services for the airspace users.