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What does transponder code 7500 indicate?
Choices
A two-way radio communication failure
7600 indicates lost communication.
✓ Unlawful interference (hijacking)correct
7500 signals unlawful interference such as a hijacking.
A general emergency
7700 signals a general emergency.
Normal VFR operations
Normal VFR is 1200, not 7500.
Why
Code 7500 indicates unlawful interference (hijacking). The memory aid is "seventy-five taken alive."
FAA source: AIM 4-1-20 / 6-2-2 / 6-3-4 / 6-4-2browse the reference library →
This is taught in Transponder Codes and Flight Following — study the lessons free, then practice with grading and mastery tracking.
Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.