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AVIATION KNOWLEDGE HUB

Understand the data behind live flight tracking

Sanum.store Flight Tracker explains the terminology and technology behind live aircraft tracking in plain language. Explore ADS-B, aircraft identifiers, altitude, speed, airport codes and the reasons live coverage can change from one place to another.

Aircraft radar illustration
AVIATION GUIDEHow live flight radar works

Learn how ADS-B receivers, aircraft transponders and map software work together to create live flight tracking.

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AVIATION GUIDEWhat is ADS-B?

A clear introduction to ADS-B, the aircraft broadcast technology behind much of modern live flight tracking.

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AVIATION GUIDECallsign vs flight number

Understand the difference between an airline flight number, radio callsign, registration and ICAO hex code.

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AVIATION GUIDEAircraft altitude explained

Understand barometric altitude, geometric altitude, flight levels and why trackers can show different values.

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AVIATION GUIDEWhat is a squawk code?

Learn what the four-digit transponder code means on a live aircraft tracker.

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AVIATION GUIDEHow airport radar pages work

How Sanum.store Flight Tracker focuses live traffic around airports and why nearby aircraft counts change constantly.

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AVIATION GUIDEAircraft registration guide

Learn how aircraft registrations differ by country and how registrations can be used for aircraft tracking.

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AVIATION GUIDEGround speed vs airspeed

Why a flight tracker usually shows ground speed and how wind changes the number you see.

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AVIATION GUIDEICAO vs IATA airport codes

Learn the difference between three-letter IATA codes and four-letter ICAO airport identifiers.

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AVIATION GUIDEWhy aircraft disappear from live radar

Common reasons an aircraft can vanish temporarily from a public flight tracking map.

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