one-hundred-and-eighty-degree error

one-hundred-and-eighty-degree error

one-hundred-and-eighty-degree error
Beacon's position can be either at A or B. This ambiguity can be removed by superimposing polar diagram of selysn aerial on the loop aerial.
An error caused by misreading the compass by flying the reciprocal of the desired course. This can be avoided by following the “red-on-red” rule, which is the traditional method for setting up a magnetic compass.