What is the required transponder setting for indicating unlawful interference?

The required transponder setting for indicating unlawful interference is 7500. This specific code is designated for situations where an aircraft is experiencing hijacking or similar unlawful interference. When activated, this code alerts air traffic control and other entities to the nature of the emergency, allowing for an appropriate response and prioritization of the aircraft in distress.

In aviation communication, different transponder codes are assigned to convey specific situations. For example, 7600 indicates a communication failure, meaning the aircraft is unable to communicate with air traffic control, while 7700 is used for general emergencies that do not specifically relate to unlawful interference. Meanwhile, 7222 is a code used for special VFR operations and is not associated with unlawful interference situations. Understanding these codes and their implications is crucial for safe aviation operations and effective emergency response measures.