FAA Questions/Flight Instructor/Question #92
communicationsFAA-published sample question (FIA, Aug 2021)

When making routine transponder code changes, pilots should avoid inadvertent selection of which codes?

A

0700, 1700, 7000.

B

1200, 1500, 7000.

C

7500, 7600, 7700.✓ Correct Answer

Explanation

AIM 4-1-20 cautions pilots, when making routine code changes, to avoid inadvertently selecting 7500 (hijack), 7600 (lost communications) or 7700 (emergency), which would trigger alarms at ATC facilities. The codes in the other options have no special meaning.

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