Windshear

Question 1

Which radar tests PWS?

Answer 1

Radar #1

Question 2

PWS works below _______ feet?

Answer 2

1200’

Essentially on takeoff before lever climb and inside of 4nm final.

Question 3

If PWS switch is in auto position, will you get PWS indications on the ground?

Answer 3

Yes

Question 4

When does PWS work on the ground?

Answer 4

Radar on – immediately if PWS is in auto

Radar off – when acceleration is sensed at beginning of takeoff roll

Question 5

When is PWS available on takeoff roll?

Answer 5

From beginning of takeoff roll to 100 knots, then inhibited until just after liftoff (50’).

Question 6

What does “PWS Scan” mean if displayed on ND?

Answer 6

Means radar is off but radar has been automatically activated for windshear detection. (verify)

Question 7

Radar scan

Answer 7

Normal – +/- 90 degrees
Descend through 2300’ – shrinks to +/- 60 degrees
Identify windshear – +/- 30 degrees

Question 8

How far ahead does PWS detect and display windshear?

Answer 8

5 nm

Question 9

If you hear an aural PWS caution, the windshear is within ____ nm?

Answer 9

3 nm

Question 10

PWS differentiates by intensity or position?

Answer 10

Position, nothing to do with intensity.

Question 11

PWS displays windshear on the _____? It must be in ___ nm scale to display the windshear. If it is not, it will prompt the pilot to reduce range with “_______ _____” on the ND.

Answer 11

ND
10nm
Red or amber “W/S SET RNG 10 NM”

Question 12

On approach, a PWS warning will be displayed as a caution if aircraft is below ____’ AGL?

Answer 12

370’

Question 13

On approach, “Go around, Windshear ahead!” is replaced by “______ _____ _____” if location is estimated to be beyond the ________point.

Answer 13

Monitor Radar Display

Touchdown

Question 14

PWS has aural priority over ______, ________, or _____ ___ __________.
__________ and _______ ___________ have priority over PWS.

Answer 14

TCAS, GPWS, other FWC warnings

Windshear, stall warning

Question 15

Things that make it through Takeoff Inhibit?

Answer 15

FFOR SEF

Engine Failure
Engine Fire
Engine Oil Pressure (verify)
Reverser Unlocked/Pressurized
Side Stick Fault (L or R)
L+R Elevator Fault
FWC 1+2 Fault

Question 16

What visual indication of PWS windshear warning?

Answer 16

Red “Windshear Ahead” on PFD

Red & black crosshatched block at appropriate range on ND with amber azimuth bars showing left/right orientation

Question 17

What is aural indication of a PWS windshear warning?

Answer 17

Takeoff environment – “Windshear ahead, windshear ahead”

Question 18

What visual indication of PWS windshear caution?

Answer 18

Amber “Windshear Ahead” on PFD

Red & black crosshatched block at appropriate range on ND with amber azimuth bars showing left/right orientation

Question 19

What is aural indication of a PWS windshear caution?

Answer 19

“Monitor radar display”

Question 20

What part of FMGEC provides reactive windshear detection?

Answer 20

E = envelope

Question 21

Below what altitude does reactive windshear detection work?

Answer 21

1300’ AGL

Question 22

When is reactive windshear inhibited?

Answer 22

Below 50’ on landing

Question 23

With what flap configuration is reactive windshear available?

Answer 23

Config 1 or greater

Question 24

What triggers a reactive windshear warning?

Answer 24

If the angle of attack plus a factor for gusts and windshears reaches a threshhold value (as detected by the Envelope computer)