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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Aircraft General Knowledge - Instrumentation > Why should a pilot avoid using steep turns to obtain reliable heading information from a conventional direct-reading magnetic compass in the Northern Hemisphere?

128 - ATPL Question Bank in English - Why should a pilot avoid using steep turns to obtain reliable heading information from a conventional direct-reading magnetic compass in the Northern Hemisphere?

Question 128 - Aircraft General Knowledge - Instrumentation - ATPL - Airline Transport Pilot Licence

The turning error depends only on magnetic variation and is unaffected by bank angle

The compass is free of dip-related turning error in every right turn

Dip-related turning error depends on bank angle, heading and latitude; a steep turn does not imply one fixed numerical error in all conditions

Every steep turn produces exactly a 180° error, irrespective of heading and magnetic dip

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