How wind shear could affect flights in St Helena

1 Air currents of differing velocities or direction create friction or 'shear'

between them

Localised air flow from wind coming up off the steep coastlline of St Helena

2 Wind shear has a

significant effect during take-off and landing of aircraft due to its effects on the control of the aircraft

4 km

4 miles

Jamestown

Airport

St Helena

Africa

South

America

Atlantic

Ocean

St Helena

Runway

Wind at higher levels

4 km

4 miles

Jamestown

Airport

St Helena

Africa

South

America

Atlantic

Ocean

St Helena

Runway

Wind at higher levels

2 Wind shear has a significant

effect during take-off and

landing of aircraft due to

its effects on the control

of the aircraft

1 Air currents of differing

velocities or direction

create friction or 'shear'

between them

Localised air flow from

wind coming up off

the steep coastlline

of St Helena