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JH🫡🫡🫡 Airplane Squawk Codes (Transponder Codes)
🚨 Emergency Squawk Codes (Universal)
➡️These are standardized worldwide under International Civil Aviation Organization (ICAO):
Code Meaning When Used
7500 Unlawful interference / Hijacking Aircraft under hijack threat
7600 Radio communication failure Total radio failure
7700 General emergency Fire, engine failure, etc..
⚠️ These codes override normal ATC assignments and trigger immediate attention.
🧭 Common Operational Squawk Codes may vary by country
🛫 How Squawk Codes Are Used
➡️Entered via the transponder control panel
➡️Transmitted to secondary surveillance radar (SSR)
Allows ATC to see:
▪️Aircraft identity
▪️Altitude (Mode C)
▪️Callsign & intent (Mode S)
🎓 Quick Memory Tip
75 – Taken (Hijack)
76 – No Talk (Radio failure)
77 – Trouble (Emergency)
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