Which runway designators are utilized by EFTA?

The correct answer refers to the runway designators used by EFTA, which stands for the European Free Trade Association. In aviation, runway designators are based on the magnetic azimuth of the runway's direction, rounded to the nearest ten degrees.

Runway designators like RWY 13 and RWY 31 are appropriate for airports where the runways are oriented approximately 130 degrees and 310 degrees, respectively. This pairing of runway designators indicates that one runway is aligned in a northeastern direction (13) while the reciprocal of that (31) indicates the direction facing southwest.

While other options suggest different runway alignments, 13 and 31 are specifically recognized as valid runway designators in this context, maintaining adherence to standard aviation practices for naming runways. Having this understanding is crucial, especially for planning and operational use in aviation, as runway designators help pilots and air traffic control establish the correct orientation for takeoff and landing.