Air Traffic Skills Assessment (ATSA) PracticeTest

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Which of the following codes indicates a hijacking situation in aircraft communications?

  1. 7500

  2. 7600

  3. 7700

  4. 7800

The correct answer is: 7500

The code that indicates a hijacking situation in aircraft communications is indeed 7500. This specific transponder code is universally recognized in aviation as the alert signal for unlawful interference with an aircraft, which includes hijacking. When pilots enter 7500 into their transponder, it notifies air traffic control that they are in a situation where they cannot communicate openly because of the threat posed by an unauthorized individual on board. In contrast, other transponder codes are associated with different situations. For example, 7600 indicates a radio communication failure, meaning the aircraft is experiencing issues with its ability to communicate with air traffic control, but does not imply any unlawful interference. The code 7700 is used as a general emergency code that can signify any type of in-flight emergency, but again, it does not specifically pertain to hijacking. The code 7800 is not part of the standard aviation codes and does not have a recognized meaning in this context. Thus, 7500 is the clear choice when identifying the code for hijacking situations.

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