How do you convert Bearing To the Station (BTS) to Bearing From the Station (BFS)?

When converting Bearing To the Station (BTS) to Bearing From the Station (BFS), you need to consider the orientation of the bearings involved. BTS is the bearing from the aircraft to the navigation aid or station, while BFS is the bearing that represents the direction from the station back to the aircraft.

To find the BFS, you can visualize it as taking the opposite direction of the BTS. Since bearings are measured clockwise from north, to find the BFS you need to add 180 degrees to the BTS. This effectively rotates the direction 180 degrees around the compass, providing you with the reverse bearing to the aircraft from the station.

So, if you received a BTS of 30 degrees, for example, adding 180 degrees would yield a BFS of 210 degrees. This relationship and method of conversion is fundamental in navigation, ensuring that pilots can accurately determine their position relative to navigation aids.