Wednesday, 20 August 2014 10:27

Safe separate distance between aircraft reduced to 30km

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Mongolian Air TrafficMongolian air traffic control separation standards will be reduced from 90 to 30 kilometres in September 18, 2014 following an review of the Civil Aviation Authority of Mongolia (MCAA) safety assessment requirements.

Tim Bradding, a former Airways Safety Manager and current regional Chief Controller, visited Ulaanbaatar in Mongolia recently to assist the MCAA in their reduction of aircraft separation distances. Since the installation in 2012 of radar sites across the region, radar control in the area has been introduced gradually, and currently relies on a 90 kilometre separation between aircraft.

Mr.Bradding says he worked closely with the MCAA to assess reducing radar separation standards to more closely align with the ICAO standard of five nautical miles (10 kilometres).

“Reducing aircraft separation requirements in a safe manner will allow the Mongolian CAA to more rapidly increase their air traffic flows, with economic benefits across the country and the region,” says Mr Bradding.

According to the official statement by the MCAA, previously the separation distance standards stated that the distance between two aircraft must be 150 km which was later reduced to current 90km with the installation of real-time monitoring radiolocation system or simply radar sites. The MCAA plans to add 2 radar sites to existing 5 radar sites and 5 ADSB. As for the human resource, the MCAA held 5 air traffic controller trainings involving 60 trainees in partnership with Aerotai Company from Thailand.
The MCAA views the reduced separation distance as an opportunity to reduce the pressure of current air traffic flows, thus increasing the number of commercial flights and over-flights through the country’s air corridor. At the moment all aircraft entering into the Mongolian airspace have to increase the distance between them.

The MCAA believes also that the new standard will economically benefit airlines by reducing their operational costs because aircraft can fly at their designated altitude, increase fuel economy and lower carbon emission.

The number of over-flight passages through the Mongolian airspace in 2014 was increased by 3,555 flights compared to the same period of the last year.

Following is the data showing the number increase of overflights by international airlines compared to previous year:

Air China – by 506;
KLM – by 524,
China Eastern Airlines – by 556,
China Southern – by 1438,
Lufthansa Cargo – by 345,
TNT – by 236,
Cathay Pacific – by 347
British Airways – by 556 flights respectively.

Four airlines also requested to use Mongolian airspace for the first time; among them are Czech Airlines, Fedex, Philippine Airlines and El Al Israel Airlines.