Transponder Codes Made Easy: A Pilot’s Survival List
Pilot Institute
FEBRUARY 28, 2025
If you plan to fly in: Group I Terminal Control Area (TCA). Above 10,000 feet MSL , excluding areas at and below 2,500 feet AGL. If youre in Visual Flight Rules (VFR) conditions, continue your flight visually and land as soon as practical at an appropriate airport. This makes 4,096 possible codes.
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