What squawk code indicates unlawful interference?

What squawk code indicates unlawful interference?

• A. 7500
• B. 7600
• C. 7700
• D. 0000

Answer: (A)

Transponder squawk codes are a quick, standardized way for an aircraft to signal its status to air traffic control. The number used to indicate unlawful interference, i.e., a hijack, is 7500. When ATC sees 7500, they immediately activate hijack procedures, coordinate with authorities, and work to keep other traffic safe while verifying the situation with the crew. The other codes have different meanings: 7600 means loss of radio communications, so ATC knows the aircraft cannot establish contact; 7700 indicates a general emergency requiring urgent assistance. 0000 is not used to indicate hijack and isn’t the standard code for unlawful interference.

Transponder squawk codes are a quick, standardized way for an aircraft to signal its status to air traffic control. The number used to indicate unlawful interference, i.e., a hijack, is 7500. When ATC sees 7500, they immediately activate hijack procedures, coordinate with authorities, and work to keep other traffic safe while verifying the situation with the crew. The other codes have different meanings: 7600 means loss of radio communications, so ATC knows the aircraft cannot establish contact; 7700 indicates a general emergency requiring urgent assistance. 0000 is not used to indicate hijack and isn’t the standard code for unlawful interference.