About Fleyra

Fleyra brings aircraft, vessels and satellites onto one calm, honest map. It is built for curious explorers and for aviation, shipping and astronomy enthusiasts alike.

How aircraft tracking works

Many aircraft broadcast their position via ADS-B. Volunteer receivers on the ground pick these signals up and share them with open networks. Coverage depends on where receivers are; over oceans and remote areas there are often none. Routes, flight numbers and arrival times are not part of ADS-B and are only shown when a licensed source provides them.

How vessel tracking works

Ships transmit AIS messages with position, course and identity. Terrestrial receivers hear these within roughly 20–60 nautical miles of the coast. Satellite AIS can extend coverage but is a paid service. Destinations and ETAs are typed in by the crew and can be outdated.

How satellite positions work

Satellites are not tracked by GPS. Public orbital elements are published a few times a day, and Fleyra computes positions from them with the SGP4 model. Accuracy decreases as elements age; we show their age on every satellite.

Reliability

Fleyra is for information and enthusiasts. It is not a navigation, air traffic control or maritime safety system. Data can be delayed, incomplete or wrong.