WHAT’S THIS BUTTON FOR?
Ever been into a cockpit? There was a time when children and enthusiasts were invited to get a glimpse of what it was like in the business end of the aeroplane.
Still, much of it remained a mystery. So what do all those buttons do?
According to the book How to Land A Plane, written by Mark Vanhoenacker, a huge effort goes into making it all very simple.
In a piece published by telegraph.co.uk, he says the External Power Control switch usually gets the most attention. It’s the button that keeps the aircraft powered while it is parked.
“You may hear a click or notice a brief flicker of the lights just before departure. That’s the pilots turning on the APU (Auxiliary Power Unit) and deselecting the external power – an auspicious signal that your jet is at last unplugged from the world, and your journey is about to begin.”