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Home > Exam Questions > ATPL - Airline Transport Pilot license > Radio Navigation > How does a Mode S interrogator identify aircraft?

138 - ATPL - How does a Mode S interrogator identify aircraft?

Question 138 - Radio Navigation - ATPL - Airline Transport Pilot license

An eight bit identifier, which gives 212 unique combinations

A 24 bit identifier, giving over 16 million combinations

The P3 pulse

The four letter SELCAL code

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