Windshear (FW) - Windshear Weather - 1

Question 1

The best defense against the hazards of low altitude windshear is:

Answer 1

Avoidance.

Question 2

Hazardous wind variations at low altitudes can result from:

Answer 2

All of the answers are correct.

Question 3

The most violent forms of wind change occur in the vicinity of:

Answer 3

Thunderstorms and rain showers.

Question 4

Airmass thunderstorms appear to be randomly distributed in unstable air and develop from:

Answer 4

Localized heating at the earth’s surface.

Question 5

What signals the beginning of the mature stage of an airmass thunderstorm?

Answer 5

Precipitation.

Question 6

Compared to airmass thunderstorms, frontal thunderstorms are:

Answer 6

More severe.

Question 7

The downward moving column of air, or downdraft, of a typical thunderstorm is about:

Answer 7

1 to 5 miles in diameter.

Question 8

The majority of documented windshear-associated accidents and incidents have occurred in:

Answer 8

The United States.

Question 9

Observations suggest that approximately what percentage of thunderstorms produce a microburst?

Answer 9

5%.

Question 10

The outflow region of a microburst is typically:

Answer 10

6000 to 12,000 feet across.

Question 11

Microburst outflows are:

Answer 11

Sometimes symmetric, sometimes not.

Question 12

Can more than one microburst occur in the same weather system?

Answer 12

Yes.

Question 13

After they contact the ground, microbursts typically dissipate within:

Answer 13

10 to 20 minutes.

Question 14

The wind speed change a pilot might expect when flying through the average microburst at its point of peak intensity is about:

Answer 14

45 knots.

Question 15

Some microbursts cannot be successfully escaped with known techniques.

Answer 15

True.

Question 16

If cumulus clouds are present in the sky, the greatest potential for microburst windshear exists:

Answer 16

If the air is hot and dry.

Question 17

If pilots fly beneath convective clouds producing virga conditions, they:

Answer 17

May encounter a dry microburst.

Question 18

In the course of analyzing past windshear accidents, the first and foremost “lesson learned” is:

Answer 18

The need to avoid windshear whenever possible.

Question 19

Typically, in a windshear encounter after takeoff, the first 5 seconds of liftoff may:

Answer 19

Appear normal.

Question 20

Successful recovery from an inadvertent windshear encounter after liftoff requires:

Answer 20

Maintaining or increasing pitch attitude and accepting lower than usual airspeed.

Question 21

To recognize and respond to a windshear encounter, you may have only:

Answer 21

5 to 15 seconds.

Question 22

Regarding windshear encounters on the runway, they:

Answer 22

May be difficult to recognize since the only indication may be slower than normal airspeed increase.

Question 23

One way to improve a flight crew’s ability to recognize and respond quickly to a windshear encounter is to:

Answer 23

Develop effective crew coordination, particularly standard callouts, for routine operational use.

Question 24

When encountering a windshear on the runway with insufficient runway left to accelerate to normal takeoff speed and inadequate runway to stop:

Answer 24

Increased pitch attitude may be required to obtain sufficient lift.

Question 25

Which of the following might contribute to a flight crew’s lack of timely and appropriate response in initiating a recovery when encountering windshear on approach?

Answer 25

All of the answers are correct.

Question 26

An increasing headwind (or decreasing tailwind) shear:

Answer 26

Increases indicated airspeed and thus increases performance.

Question 27

A rapid or large airspeed increase on approach should be viewed as a possible indication:

Answer 27

Of a forthcoming airspeed decrease and thus may be reason for discontinuing the approach.

Question 28

An airplane encountering a decreasing headwind shear may tend to:

Answer 28

Pitch down to regain trim speed.

Question 29

What is the size of a typical microburst downdraft?

Answer 29

Less than 1 mile in diameter.

Question 30

An airplane flying through a series of horizontal vortices generated by microbursts experiences:

Answer 30

Alternating updrafts and downdrafts causing pitch changes without pilot input.

Question 31

The most significant impact of rapidly changing vertical winds in a microburst is to:

Answer 31

Increase pilot workload during the recovery.

Question 32

Large crosswind shears:

Answer 32

May require large or rapid control wheel inputs.

Question 33

In order to prevent inadvertent entry into airplane stall:

Answer 33

Stick shakers are installed on some aircraft.

Question 34

During a windshear encounter due to a microburst, barometric altimeters may:

Answer 34

Provide distorted indications due to pressure variations within the microburst.

Question 35

During a windshear encounter, the vertical speed indicator:

Answer 35

May significantly lag actual airplane rate of climb/descent.

Question 36

It’s important to be aware of weather conditions and to count indications of potential windshear cumulatively. Which of the following are clues that there is a potential for windshear?

Answer 36

All of the answers are correct.

Question 37

A low-level windshear alert system (LLWAS) typically provides coverage:

Answer 37

Near the runways and does not extend beyond the middle marker.

Question 38

Which of the following are visual cues that can be seen from the cockpit that indicate the presence of microburst windshear?

Answer 38

Localized dust, flying debris, or virga.

Question 39

Airborne weather avoidance radar can detect:

Answer 39

Precipitation associated with convective clouds.

Question 40

To identify when attenuation is occurring during the use of airborne weather radar, the pilot may:

Answer 40

Tilt the radar antenna down and observe ground returns around the radar echo.

Question 41

Simulator training in the windshear recovery technique:

Answer 41

Cannot reproduce all the elements associated with actual windshear encounters.

Question 42

When implementing takeoff precautions due to possible windshear activity in the area, for takeoff you should use:

Answer 42

Maximum rated takeoff thrust.

Question 43

To properly calculate increased rotation speed (VR) as a precautionary technique for takeoff in possible windshear conditions,:

Answer 43

Use the field length limit maximum weight VR (up to 20 knots over actual weight VR).

Question 44

When commencing an approach into suspected windshear conditions and precautions are being taken, auto throttles:

Answer 44

Should be monitored closely for inappropriate thrust reductions.

Question 45

When calculating your approach speed for suspected windshear conditions which indicate precautions should be taken, you should remember that:

Answer 45

An additional 20 knots at touchdown can increase your stopping distance by as much as 25 percent.

Question 46

To effectively recognize a windshear encounter after liftoff:

Answer 46

Crews must develop an awareness of normal instrument indications.

Question 47

Below 1000 feet AGL during takeoff, flight crews should be prepared to execute the windshear recovery technique if deviations from target indicated airspeed exceed:

Answer 47

15 knots.

Question 48

Below 1000 feet AGL during approach, flight crews should be prepared to execute the windshear recovery technique if deviations from the target vertical speed exceed:

Answer 48

500 feet per minute.

Question 49

After liftoff or on approach, the most effective technique for recovering from a windshear encounter for turbojet aircraft when airborne is:

Answer 49

Applying necessary thrust and rotating initially toward 15 degrees pitch up attitude.

Question 50

During a recovery from an inadvertent windshear encounter after liftoff, airspeed should be increased by cautious reductions in pitch attitude:

Answer 50

Once the airplane is climbing and ground contact is no longer an immediate concern.

Question 51

During recovery from an airborne windshear encounter, the correct use of power is to:

Answer 51

Aggressively apply thrust as necessary to ensure adequate airplane performance.

Question 52

To recover from a windshear encounter during takeoff after liftoff, what should be done with flaps and landing gear?

Answer 52

Maintain flap and gear position until clearance is assured.

Question 53

If you have just encountered windshear and are working to recover, should you follow the guidance of a flight director?

Answer 53

Only if it is designed for operation in windshear; otherwise you should ignore it.

Question 54

During a windshear encounter recovery, stick shaker activation may result from:

Answer 54

All of the answers are correct.

Question 55

Immediately following a successful windshear recovery, a pilot should:

Answer 55

Make a PIREP to air traffic control as quickly as possible.

Question 56

When a windshear is encountered on the runway after V1 when reaching VR,:

Answer 56

Rotate toward 15 degrees pitch attitude by 2000 feet of runway remaining.