![From celebrity jets to Pelosi's Taiwan trip, flight trackers are the sleeper hit of the summer | Air transport | The Guardian From celebrity jets to Pelosi's Taiwan trip, flight trackers are the sleeper hit of the summer | Air transport | The Guardian](https://i.guim.co.uk/img/media/d20cc739d6669ab49407adfe8960646f2573e970/0_134_2044_1227/master/2044.jpg?width=1200&height=900&quality=85&auto=format&fit=crop&s=84c51c4dcc6e7434eb39bda9c5eabe6c)
From celebrity jets to Pelosi's Taiwan trip, flight trackers are the sleeper hit of the summer | Air transport | The Guardian
![Flightradar24 on Twitter: "What's the difference between a flight number, call sign, and radio call sign? And what are each used for? We clear up some call sign confusion: https://t.co/qE96hTzEwr https://t.co/cAck09L4LA" / Flightradar24 on Twitter: "What's the difference between a flight number, call sign, and radio call sign? And what are each used for? We clear up some call sign confusion: https://t.co/qE96hTzEwr https://t.co/cAck09L4LA" /](https://pbs.twimg.com/media/FSlksrNXwAQk8Ih.jpg:large)
Flightradar24 on Twitter: "What's the difference between a flight number, call sign, and radio call sign? And what are each used for? We clear up some call sign confusion: https://t.co/qE96hTzEwr https://t.co/cAck09L4LA" /
![Flightradar24 app lets you track military aircraft in the sky - and it's used by millions - Birmingham Live Flightradar24 app lets you track military aircraft in the sky - and it's used by millions - Birmingham Live](https://i2-prod.birminghammail.co.uk/incoming/article23352735.ece/ALTERNATES/s1200c/0_Flight-radar.jpg)