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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Radio Navigation > For DME/N equipment first installed after 1 January 1989, ICAO Annex 10 limits the combined error contribution from the transponder, its location coordinates, propagation and random pulse interference, excluding airborne equipment and on a 95% probability basis, to:

73 - ATPL Question Bank in English - For DME/N equipment first installed after 1 January 1989, ICAO Annex 10 limits the combined error contribution from the transponder, its location coordinates, propagation and random pulse interference, excluding airborne equipment and on a 95% probability basis, to:

Question 73 - Radio Navigation - ATPL - Airline Transport Pilot Licence

+ or - 0.5 NM or 3% of the distance measured whichever is the greater

±185 m (approximately ±0.1 NM).

+ or - 0.25 NM plus 3% of the distance measured up to a maximum of 5 NM

+ or - 1.25 NM plus 0.25% of the distance measured

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