PSTAR sections 7-9

Avoiding wake turbulence is

• the sole responsibility of ATC.
• the responsibility of the pilot, only when advised by ATC of the possibility of wake turbulence.
• a responsibility shared by both the pilot and ATC.
• the sole responsibility of the pilot.

Hazardous wake turbulence caused by aircraft in still air

• dissipates immediately.
• dissipates rapidly.
• may persist for
• minutes or more.
• persists indefinitely.

Which response is most correct with respect to wake turbulence?

• Wing tip vortices are carried by the ambient wind.
• Wing tip vortices have a circular and downward motion.
• Wake turbulence exists behind all aeroplanes and helicopters in flight.
• All of the above are correct.

The wing tip vortices generated by a heavy aeroplane can cause a lighter aircraft encountering them to

• go out of control.
• continue descent even when maximum power is applied.
• sustain structural damage.
• experience any of the above situations.

During the two minutes after the passage of a heavy aeroplane in cruising flight, hazardous wing tip vortices will

• dissipate completely.
• dissipate rapidly.
• dissipate very slowly.
• remain at cruising altitude.

The pilot of a light aircraft on final approach close behind a heavier aircraft should plan the approach to land

• beyond the touchdown point of the other aircraft.
• prior to the touchdown point of the other aircraft.
• at the touchdown point of the other aircraft.
• to the right or left of the touchdown point of the other aircraft.

Wake turbulence is produced by

• heavy aeroplanes only, regardless of their speed.
• turbo-jet powered aircraft only.
• fast moving aeroplanes only, regardless of their weight.
• all fixed and rotary wing aircraft.

Wake turbulence caused by a departing large aeroplane begins

• before rotation.
• with rotation.
• after becoming airborne.
• with full power application.

Wake turbulence caused by a departing aeroplane is most severe immediately

• before rotation.
• following take-off.
• above its flight path.
• following full power application.

Which statement concerning wing tip vortices is false?

• Vortices normally settle below and behind the aircraft.
• With a light crosswind, one vortex can remain stationary over the ground for some time.
• Lateral movement of vortices, even in a no wind condition, may place a vortex core over a parallel runway.
• Vortices are caused directly by ‘jet wash'.