Pilot Institute

FEBRUARY 28, 2025

Pilots and ATCs daily use transponder codes, also known as squawk codes. Lets examine the key transponder codes, what they mean, and how useful they can be when used correctly. Lets examine the key transponder codes, what they mean, and how useful they can be when used correctly. What Are Transponder Codes?

Transponder 52

Transponder Air Traffic Control Visual Flight Rules True Airspeed 52

Flight Training Central

MARCH 10, 2025

Have an operating transponder with altitude reporting. A temporary flight restriction (TFR) may be issued for: Areas around major sporting events below 3,000 AGL and within 3 nautical miles. VOR/DME must complete an online course covering flight operations in the D.C. Special Flight Rules Area (SFRA).

Visual Flight Rules 92

Visual Flight Rules Transponder Instrument Flight Rules Ceiling 92

Flight Training Central

MARCH 18, 2024

There are different requirements if the flight is operated under Instrument Flight Rules (IFR) or Visual Flight Rules (VFR). For example, a pilot flying IFR in controlled airspace will have to file an IFR flight plan and receive an ATC clearance. It typically extends to 4,000′ AGL.

AGL 52

AGL Indicated Airspeed Clearance Transponder 52

Pilot Institute

SEPTEMBER 26, 2024

Aircraft need to have a two-way radio, transponder with Mode C, and Automatic Dependent Surveillance-Broadcast (ADS-B) Out equipment. Maintaining awareness of airspace boundaries helps with the planning and carrying out of successful flights. Transponder with Mode C to report altitude.

Clearance 52

Clearance Transponder Knot Indicated Airspeed 52

Universal Weather

JANUARY 24, 2025

be equipped with an appropriate transponder with ADS-B Out capabilities that performs to the Minimum Operational Performance Standards of RTCA DO-260B, or newer; and have antenna capability for broadcast toward both ground-based as well as space-based ADS-B receivers.

True Airspeed 59

True Airspeed Instrument Flight Rules Knot Air Traffic Control 59

Universal Weather

APRIL 9, 2024

be equipped with an appropriate transponder with ADS-B Out capabilities that performs to the Minimum Operational Performance Standards of RTCA DO-260B, or newer; and have antenna capability for broadcast toward both ground-based as well as space-based ADS-B receivers.

True Airspeed 52

True Airspeed Instrument Flight Rules Knot Air Traffic Control 52

Flight Training Central

APRIL 29, 2024

MTR’s with segments above 1,500′ AGL are identified by a three-digit number. MTR’s flown entirely below 1,500′ AGL are identified by a four-digit number. Special flight rules provide for general aviation operations within the area. SFRA flight plan. VFR pilots must file a D.C.

Clearance 111

Clearance AGL NOTAMs Pilot 111