Hello Aviation enthusiastic, my name is Sander. In the previous edition I wrote a global article about my job as a flight dispatcher at Amsterdam Schiphol Airport. This edition will feature working with different procedures under specified weather conditions. The winter period has arrived. As the days get shorter and colder it still has its great days full off glamorous sunshine. A low hanging sun reflects amazing on the aircrafts fuselages and the morning dew above the field is just fantastic. I personally love working with temperatures around 32 ° F / 0 ° C is making those sunny days perfect for dispatching. Although winter can be beautiful, with all the respect to mother nature, winter can create major problems for the Aviation industry. On a cold winter morning you can discover ice on an aircraft and that could mean the aircraft needs to be cleared of contamination( Ice or snow). When the pilot makes a walk-around to inspect the aircraft he or she will check the wings surface for contamination on the leading and trailing edge devices. If Ice or snow is spotted the pilot instantly decides for de-icing. They also check for ice and snow on the rudder and stabilo. The reason of de-icing is simple; an aircraft will generate lift while making speed on the runway to get up in the air. With ice or snow on the wing the aircraft can not generate enough lift to get airborne. To calculate the time an aircraft has to get airborne after de-icing is called the‘’ HOT” Hold over time. Hold over Time is the estimated time for which an anti-icing fluid will prevent the formation of frost or ice and the accumulation of snow on the protected surfaces of an aeroplane under specified weather conditions. The pilot report to us if they need de-icing or not. If they do need de-icing we as dispatchers inform the ramp coordination. Ramp is providing and planning the de-icing trucks for us. To minimize any chance on a delay we anticipate as soon as possible. We start the boarding and loading of cargo and bags sooner than usual. Passengers and flight crew rely on us that we close the aircraft doors