AGL Airspace Classes Cockpit 
Pilot Institute
DECEMBER 27, 2024
The code is manually set by the pilot using a selector switch in the cockpit. A transponder is not required unless an aircraft is operating: In Class A, Class B, or Class C airspace. Above 10,000 feet Mean Sea Level (MSL), excluding airspace below 2,500 feet Above Ground Level (AGL).
Pilot Institute
DECEMBER 19, 2024
Pattern altitudes are typically 1,000 feet above ground level (AGL) for piston aircraft. Losing situational awareness: Distractions in the cockpit or confusion about airport layout can lead to unintended incursions. SVFR is only available in controlled airspace (Class B, C, D, or E surface areas) where ATC services are available.
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