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Private Pilot Airplane practice question 46

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

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Correct answer: C. 7500

When changing codes, avoid accidentally selecting 7500 (unlawful interference), 7600 (lost communications) or 7700 (emergency), because each one can trigger an alarm at ATC.

References

AIM 4-1-20

Practice 10 random questions Practice 20

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Question 46 from the FAA document Private Pilot-Airplane (PAR) Sample Questions (U.S. Government work, public domain) · ACS/LSC code PA.VI.B.K4. The FAA does not publish an answer key; the answer and explanation are ours, with references. Verify against the current regulations and handbooks.