Questions

1.

What is meant by ‘low altitude windshear’?

a.

Turbulence at or below FL50

b.

A sudden change in wind direction at any altitude below 2000 ft

c.

A sudden change in wind velocity on the runway, final approach or in the

climb-out

d.

An unexpected crosswind when the aeroplane is on the runway

2.

Vertical windshear is defined as:

a.

a change in wind velocity with height

b.

a change in wind speed with an increase in altitude

c.

a change in wind direction, contrary to that expected, with an increase in

altitude

d.

a rapid change in speed of an ascending current of air

3.

Horizontal windshear is defined as:

a.

a change in wind direction with a change in horizontal distance

b.

a change in wind force over a defined area

c.

a change of wind velocity with horizontal distance

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d.

any change in speed of a wind that is blowing horizontally

Questions

4.

What would you expect to happen in an ‘up and down draught’ windshear?

a.

The wind velocity to vary with both altitude and horizontal displacement from

a datum

b.

Initially an updraught causing the aeroplane to rise uncontrollably, and

subsequently a downdraught causing uncontrolled descent

c.

Encountering alternately rising and descending air currents in the vicinity of

large cloud formations

d.

Vertical excursions in horizontal flight

5.

With what met phenomena is windshear most associated?

a.

Thunderstorms

b.

Passage of a warm front

c.

Tropical revolving storms

d.

Standing mountain waves

6.

Apart from the answer to Q5, windshear can also be found in the vicinity of hills

and structures. Where particularly would windshear in this instance be found?

a.

Upwind and above the hills or structures

b.

In the lee of hills and structures but well above the ground

c.

Downwind of hills and structures from ground level upwards

d.

On the seaward side of hills and structures where no other obstructions are

found

a.

suffer a loss of lift

apply power

b.

increase speed due to reduced drag

lift the nose

c.

yaw to starboard

apply right rudder

d.

suffer an energy gain

reduce power and lower the nose

8.

Shortly after take-off the attitude of the aeroplane suffers an abrupt pitch-up and

IAS rapidly decreases followed quickly by a decrease in altitude. Engine indications

are normal. You should suspect what, and what should you do?

a.

Marked temperature drop; apply full power

b.

Loss of headwind or an increase in tailwind; apply full power

c.

Incipient engine failure (ignore instruments); lower the nose to gain airspeed

d.

Local clear air turbulence; reduce speed to VRA and ride it out

9.

On an ILS final approach, you notice that the sky is darkening, visibility is reducing

and turbulence is increasing. At the same time you encounter an energy gain

situation causing you to ‘balloon’ above the glide path. What should you do?

a.

Suspect windshear and correct power and attitude to regain the glide path

b.

Suspect that you have passed through the top of the turbulence layer and

that the wind is no longer geostrophic, so corrections to power and attitude

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are required

Questions

c.

Suspect microburst activity and pre-empt the inevitable energy loss situation

of the microburst

by leaving power and attitude settings as before and then correct once clear

d.

Suspect microburst activity, apply full power, climb as per the missed approach

procedure and go around for a further approach after the microburst has

cleared the approach area

10.

With which of the following should you be aware of the possibility of microburst

activity?

1

2

3

4

5

6

7

8

9

10

c

a

c

d

a

c

a

b

d

a