The main reason for mounting the detector unit of a remote reading compass in the wingtip of an aeroplane is: - ATPL

Question id 475 - General Navigation - ATPL - Airline Transport Pilot license

To minimise the amount of deviation caused by aircraft magnetism and electrical circuits

By having detector units on both wingtips, to cancel out the deviation effects caused by the aircraft structure

To ensure that the unit is in the most accessible position on the aircraft for ease of maintenance

To maximise the units exposure to the earth's magnetic field