Hello, I'm Gareth Mitchell and on this edition of Business Daily, I've come to London

Luton Airport where I'm standing just outside a state-of-the-art flight simulator facility is where they do

lots of pilot training and they're going to show me how issues with GPS are affecting aviation

and indeed what pilots are doing about it.

And it's not just airline pilots.

This is a programme about how a system that millions of us around the world rely on every day

for everything from logistics and shipping to banking and even dating is proving a bit, well, vulnerable.

You can see if it senses that we've got a discrepancy between ground-based radio aids

and the aircraft's air data.

This is Mark. He's a pilot and one of the instructors here in the Avion Flight Simulator at Luton.

We've climbed into a complete Airbus A320 cockpit with its arrays of displays, flight controls

and banks of switches.

The GPS thinks we are and where the aircraft IRS think that we are positioned. So we're always

made aware by the airplane if there is a disagreement.

Mark's setting up the simulator and getting me strapped in, just as if we were taking off for a routine departure with passengers.

What we're going to experience now is a simulated flight as the aircraft goes into motion.

In the right hand seat, that's Ryan Visser.

He's an experienced Boeing 747 pilot, ably demonstrating that he also knows his way around

the airbus pretty well.

He's the facility manager here.

Well, this is exciting.

We're ready to go.

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