Predictive Windshear System (PWS)

Question 1

What are the three levels of wind-shear detection?

Answer 1

Advisory
Caution
Warning

Question 2

PWS Detection System provides detection of wind-shear ____ of the aircraft during ___ and ____ phases of flight.

Answer 2

PWS Detection System provides detection of wind-shear in front of of the aircraft during takeoff and landing phases of flight.

Question 3

Is there F/D, A/T, or Autopilot guidance for wind-shear escape?

Answer 3

No.

Question 4

How is wind-shear detected?

Answer 4

Weather Radar uses an advanced microprocessor to use the Doppler concept to detect areas of moderate and high turbulence, as well as low level wind-shear (microburst)

Question 5

Where does the PWS operate?

Answer 5

2,300 AGL and below.

Question 6

The detection of wind-shear conditions is accomplished by

Answer 6

Detecting the Doppler Shift of the horizontal wind component.

Question 7

The weather radar automatically begins scanning for wind-shear when:

Answer 7

Thrust levers set for takeoff, even if engine is off or IRS not aligned or,

In flight below 2,300 RA (predictive wind-shear alerts issued below 1,200 RA)

Question 8

When are predictive wind-shear alerts issued?

Answer 8

Below 1,200 RA

Question 9

A wind-shear CAUTION is generated whenever:

Answer 9

Wind-shear event occurs outside the wind-shear warning region and within +/- 30° of the aircraft heading and less than 3 NM from the aircraft.

Question 10

A wind-shear WARNING is generated whenever:

Answer 10

Wind-shear event occurs within +/- .25NM of the longitudinal axis of the aircraft and within +/- 30° of the aircraft heading.

When on the ground wind-shear warning occurs for wind-shear events within 3NM..

Question 11

Cautions & Warnings :

Takeoff Roll - 80 Knots
80 knots - 400 ft.
400 ft. - 1200 ft.

All new alerts are ___ from time aircraft passes ____ until it reaches ____ ft.

Answer 11

Cautions & Warnings :

Takeoff Roll - 80 Knots - BOTH
80 knots - 400 ft. - Warnings Only
400 ft. - 1200 ft. - BOTH

All new alerts are disabled from time aircraft passes 100knots until it reaches 50 ft.

Question 12

Priority:

1.
2.
3.
4.

Answer 12

1. Wind-shear Conditions Alert (Aircraft in Wind-shear)
2. GPWS - Above PWS and TCAS
3. PWS - Above TCAS
4. TCAS - last priority

Question 13

Which of these Predictive Wind-shear Alerts will not produce an aural alert?

Answer 13

Advisory