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453 - ATPL Question Bank in English - When coefficient A represents a constant compass installation/index error caused by mechanical misalignment of the housing, how is that component corrected?

Question 453 - General Navigation - ATPL - Airline Transport Pilot Licence

Using the compensation magnets.
By realigning the compass housing about its vertical axis, in accordance with the applicable maintenance procedure.
Removing disturbing magnetic material from the close vicinity of the compass.
Degaussing (demagnetising) the compass.

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