Dispatch Release And Aviation Operations In Severe Weather Conditions

Safety first is always the most critical air transport policy. In threaten aviation safety elements, with the aircraft itself improve security, legal regulations and operating procedures of the sound, mechanical factors and human factors are dropping, while at the same time the proportion of the impact of meteorological factors, but in the year increased. This paper selects the greatest impact on flight safety, flight risk weather:thunderstorms, wind shear, icing and fog, summed up their principles, types, characteristics such as knowledge, analyzes the Beijing Capital International Airport and Nanjing Airport thunderstorms and fog occurrence and variation; binding airport security capabilities by actual typical flight accident case study on the different meteorological conditions affecting flight safety, on this basis, the use of some of dispatch resource management ideas and methods of making the work release checklist procedures for these four main impact of air transport aircraft safety risk weather, severe weather conditions presented pilots and dispatchers tree disposal measures for reducing pilots and dispatchers in adverse weather conditions runtime making omissions and air transport safety and security to provide the necessary technical support, and has good application prospects.Thunderstorms would seriously interfere with the operation of the flight crew and to increase its workload. We further validated through research aircraft crossing dissipate more likely to be struck by lightning thunderstorm stage conclusions. According to the Beijing Capital International Airport METAR packet analysis, we found the airport spring thunderstorm first appeared in March, at the latest in May Beijing Capital International Airport in summer thunderstorms in the afternoon to the evening generated, duration mostly less than1hour; when the thunderstorm cloud top height is less than7000m, the weather is generally live showers; Cloud top in 7000-10000m when a small to moderate thunderstorm; Cloud top in10000-13000m when moderate to strong thunderstorms; Cloud top when greater than13000m will be accompanied by hail. Beijing Capital International Airport early autumn thunderstorm ended in September, at the latest at the end of November, from September to November, thunderstorms occur days showed a decreasing trend. Running under the thunderstorm flights, for flight crew speaking, we must grasp the characteristics of thunderstorms, thunderstorms can understand the dangers posed by weather, master flight fly around thunderstorms approach. For dispatchers, the release decision-making should be considered prior to the following aspects:route or airport terminal area thunderstorm intensity and trends, airport flight traffic control delays caused by the passenger waiting time, flight crew duty period requirements, the subsequent flight plan, fuel demand, reliability alternate airport, civil aviation regulations and Company Manual requires aircraft fault preserved restrictions, etc., will eventually need to grasp the principle of safety first, timely communication with the flight crew, flight or terminate the joint release flight operation.Windshear, especially micro downburst caused by vertical wind shear and wind shear easily direct threat to flight safety. Pilots can determine by visual discrimination and instrumentation are two ways to determine if they are about to or have already encountered windshear. Beijing Capital International Airport occurred greater than20m/s winds occur most frequently in spring is March, spring windy weather at the latest in May occurred.Dispatchers known or predictable route on the airport terminal or wind shear weather exists and affects the safe operation must be swift decision. For the flight route, the monitoring windshear weather, dispatchers should immediately via air-ground data link system or satellite phone to inform pilots latest information.Aircraft in the air encountered severe icing or de-icing is not complete when the ground easily lead to serious flight accidents or incidents. Through the winter capital airport meteorological data analysis, the earliest history of the final snow date January23, the latest is March15. Flight crew in the snow weather before takeoff the aircraft critical surfaces must ensure that no ice, snow, frost contamination. Flight flight dispatchers released when the weather changes and keep abreast of the latest NOTAMs, master aircraft maintenance progress and airport traffic control situation. In running sluggish things to adjust flights. For the flight route, when monitoring the route and terminal area icing weather, be sure to promptly inform the flight crew.Fog cause the pilot can not visually determine the current position, and therefore may induce flight accidents or incidents. In foggy weather, the pilot must increase the inspection frequency device status inside the cabin, when the aircraft down to the minimum descent altitude or decision height, only to establish the necessary visual reference before they can continue to decline. Nanjing airport in October, November, and January, the foggy days in these months was significantly higher than in other months. In Spring, Beijing Capital International Airport fog from March to May in general showed a decreasing trend ended in heavy fog early March. Winter<1km and <4km reduced visibility peak times at the8-9o’clock. Flight dispatchers when working in heavy fog needs to be combined with the live airport meteorological wind, temperature, dew point, and weather market situation and other factors analysis of the causes of heavy fog, according to the characteristics of fog, mist determine the duration. Dispatchers flight in foggy weather when the next release, we must ensure a reliable route alternate airports, and aircraft to carry sufficient fuel.