When severe weather occurs, it can mean huge costs for airlines and airports.
aviation industry operates 24 hours a day, 365 days a year, regardless of weather changes and conditions. Sometimes, when the weather is severe, it can mean huge costs for airlines and airports, with delays and cancellations, as well as bad publicity during difficult times.
airtime portal He gives the case taken as an example December 2010, Where Europe faced tough adversity in the week before Christmas. Frankfurt Airport registered more than 246 cancellation number of flights in a single day, while the airport Charles de Gaulle in Paris, He was short of anti-icing liquid.
presence of ice on the wings of the aircraft Aside from frost and ice, known as wing contamination, it is one of the most serious threats to flight safety, phenomena that have caused numerous accidents throughout aviation history.
in January 1982For example, Air Florida Flight 90 crashed into the frozen Potomac River 30 seconds after takeoff. Washington National Airportin which 78 people died, The main reason was the presence of ice and snow on critical surfaces of the aircraft.
Contamination with ice, snow, or frost on the surface of an aircraft has two serious effects: increased weight and decreased instrument performance, increased stall speed and decreased lift, and rarely any three millimeters of frost They can increase the distance an aircraft needs to fly by more than 80%.
To avoid these types of accidents, airlines and aviation bodies support the clean aircraft concept, which means that no aircraft should take off from contaminated critical surfaces. it is accomplished by melt why anti snow.
an aircraft can be defrosted Using liquids or mechanical means. But care must be taken when applying any liquid to the surface. There are specific areas with no spray, such as antennas, windows, landing gear, probes, etc. equipment and engines.
anti ice This is a preventive procedure that is completed after the removal of snow, ice or frost. Provides protection for a limited period of time called time off (Hot).
Pilots take advice in such cases hot table To determine the maximum length of time for the prevailing conditions, and before the aircraft undergo a further process of fluid used melt.
during the flight, Aircraft use anti-icing systems Integrated into the engine and wings. Pneumatic de-icing boots are common on small aircraft, which expand to break up ice on the wings.
Jet aircraft use warm bleed air from the engines directed through tubes near the surface of the wing. Los Boeing 787 they use coils electrothermal more efficient.
Before aircraft are certified, they are subjected to extreme weather tests, in conditions up to -35°C for several hours, during which all systems are tested and monitored.
Airports also rely on weather forecasters to predict and plan for winter weather. Up to five days in advance, forecasts detailing any extreme weather are produced.
In addition to snow, frost and ice, airport forecasts often include lesser known weather phenomena such as freezing rain. (FZRA), freezing wind (FZDZ); frozen mist (FZFG), Snowball (GS), among others.
Notwithstanding the foregoing, if the airport It is not free of snow and iceAircraft will not be able to take off, as there is a fleet of snow removal vehicles that work at these sites twenty four hours To keep the taxiways, aprons and most importantly runways clean and safe.
As seen, for airports accustomed to dealing with winter weather, in a coordinated effort, snow removal can take just 20 minutes, reducing runway closures and flight delays. Once the runway is cleared, airport officials measure surface friction to determine if it is safe for aircraft to reopen.