"Memory" items Windshear

Question 1

Which manoeuvre has priority between windshear and TCAS?

Answer 1

Windshear

Question 2

What should you notify ATC of after experiencing windshear?

Answer 2

Loss or gain of speed and the altitude at which it was encountered

Question 3

Can an FO take off or land if windshear has been reported?

Answer 3

No

Question 4

Which computers are responsible for detecting windshear?

Answer 4

FACs

Question 5

At what times is the windshear detection function operative?

Answer 5

In CONF 1 or more, when:

At takeoff, 3 seconds after liftoff, up to 1300ft RA

At landing, from 1300ft RA until 50ft RA

Question 6

What would you experience during a windshear warning?

Answer 6

A visual red WINDSHEAR message on both PFDs for a minimum of 15 seconds

An aural synthetic voice announcing “windshear” three times

Question 7

What happens if the range ring is set to greater than 10nm and a predictive windshear warning alert is triggered?

Answer 7

W/S SET RNG 10NM is displayed on ND in the centre of the screen

Question 8

At what times is the predictive windshear system operative?

Answer 8

Below 1800ftRA

Below 2300ftRA

Depending on the system

Question 9

What is the scanning range of the PWS system?

Answer 9

5nm

Question 10

What are the possible PWS warnings?

Answer 10

Go around windshear ahead

or

Windshear ahead (twice) (This is at takeoff)

Question 11

What are the possible PWS cautions or advisories?

Answer 11

Caution

Monitor radar display

Advisory

Nil (although windshear icon on ND)

Question 12

During takeoff, if the PWS detects windshear, when will it show as an advisory?

Answer 12

Further ahead than 3nm

(And on some systems, when windshear detected between 25-40 degrees off track)

Question 13

During takeoff, if the PWS detects windshear, when will it show as a warning?

Answer 13

0.25nm either side of the track, up to a range of 3nm

Question 14

During flight, if the PWS detects windshear, when will it show as a warning?

Answer 14

0.25nm either side of the track, up to a range of 1.5nm

Question 15

During flight, if the PWS detects windshear, when will it show as an advisory?

Answer 15

Further ahead than 3nm

(And on some systems, when windshear detected between 25-40 degrees off track)

Question 16

During flight, if the PWS detects windshear, when will it show as a caution?

Answer 16

Between 1.5nm to 3nm

Question 17

When are PWS alerts inhibited?

Answer 17

Above 100kts up to 50ft on departure

Below 50ft during landing

Question 18

Which audio calls have priority over PWS, and which does PWS have priority over?

Answer 18

Has priority over TCAS, GPWS and other FWC aural warnings

Inhibited in event of reactive windshear detection and aural messages of stall warnings

Question 19

If W/S ahead is displayed on the PFD, will it be amber or red?

Answer 19

Depends on the level of the alert

Question 20

How does PWS display windshear on the ND?

Answer 20

Two yellow lines coming out of the aircraft at the bottom, which indicates the radials from the aircraft where the windshear has been detected, and red and black stripes, which indicate the distance away

(Indication only available in ARC and ROSE modes)

Question 21

What is the PF callout when carrying out a reactive windshear escape manoeuvre?

Answer 21

Windshear Toga

Question 22

What will happen if windshear is detected?

Answer 22

Windshear message displayed on one or both PFDs

Aural windshear three times

Question 23

What should you do if you hear “Windshear, windshear, windshear” during the takeoff roll?

Answer 23

You shouldn’t hear that as it is inhibited

Question 24

What should crew do if windshear suspected during takeoff roll?

Answer 24

Reject

Question 25

What are the windshear memory items needed if windshear experienced after V1?

Answer 25

THR LEVERS TOGA Reaching Vr - Rotate SRS orders follow If necessary, crew may apply full back stick If FD bars not displayed, initially aim for 17.5, then increase if necessary to prevent loss of altitude Do not change configuration (Slats/flaps/gear) until out of windshear

Question 26

What are the windshear memory items needed if windshear experienced after getting airborne, during the initial climb, or at landing?

Answer 26

THR LEVERS TOGA AP (if engaged) keep on SRS orders follow If necessary, crew may apply full back stick Autopilot disengages if the AoA value goes above alpha prot If FD bars not displayed, initially aim for 17.5, then increase if necessary to prevent loss of altitude Do not change configuration (Slats/flaps/gear) until out of windshear

Question 27

Can you disregard windshear?

Answer 27

Predictive windshear (windshear ahead or go around windshear ahead) can be disregarded, providing both: There are no other signs of possible windshear conditions And The reactive windshear system is operational Crew must always rely on reactive windshear (WINDSHEAR) alerts

Question 28

Should you reject takeoff based on a predictive windshear?

Answer 28

For predictive windshear warning, captain must reject takeoff For cautions, it is the decision of the captain to continue, considering toga or rejecting takeoff

Question 29

Can you change configuration based on a PWS alert?

Answer 29

Yes

Question 30

Can you change flight path based on a PWS alert?

Answer 30

"Ensure that the flight path does not include areas of suspected windshears" (FCTM)

Question 31

If you see 'monitor radar display', what does that mean?

Answer 31

PWS caution, so PWS system detects windshear 1.5nm to 3nm ahead during flight

Question 32

What happens if you see monitor radar display during approach?

Answer 32

You 'should' either delay the approach or divert If you decide to continue: Assess weather severity Consider most appropriate runway FLAPS 3 Use managed speed Can increase VAPP up to VLS+15kts

Question 33

What is the benefit of CONF3 during potential windshear conditions?

Answer 33

Better go around climb gradient capability More energy and less drag Higher margin to VFE

Question 34

What is the benefit of managed speed for potential windshear conditions?

Answer 34

Benefit from GS mini

Question 35

If selected speed is used for the approach, will it revert to managed in a go around?

Answer 35

Only when SRS engages

Question 36

What is the danger with suspected windshear in the takeoff roll with respect to V1?

Answer 36

It may be that a gust has brought speed to V1 earlier than expected, so rotation could occur at a lower than safe speed. Alternatively, if V1 is delayed due to transient wind changes, it may be that there is insufficient runway remaining to safely stop in the event of rejection

Question 37

What is a risk after having completed a low level windshear manoeuvre before landing?

Answer 37

That, due to maintaining config, the go around actions aren't completed once clear of windshear. When clear, a good call would be "Go around flaps" to return to normal operations

Question 38

In the event that alpha floor protection activates during windshear, what would happen once clear?

Answer 38

It would convert to toga lock. This, coupled with the aircraft configuration, could quickly lead to overspeed, so autothrust needs to be disconnected using the instinctive disconnect push buttons, then use manual thrust until satisfied that autothrust can be reengaged

Question 39

What are the FACs doing when considering windshear?

Answer 39

Calculating the predicted energy level, and issuing a warning if it falls below a predetermined threshold. The energy is expressed as an AoA, and compare it with the AoA threshold. This means that the FACs consider the significance of a shear, and also the aircraft overall energy level. This explains why minor shears can generate alerts, and therefore they must be followed

Question 40

What is the benefit of adding extra speed during a gusty approach?

Answer 40

The FACs calculate windshear alerts based on predicted energy, and by adding speed this increases the margin

Question 41

When SRS mode is engaged, which control surfaces control the speed target?

Answer 41

The elevators

Question 42

When will SRS become CLB?

Answer 42

When passing the FMGC entered acceleration altitude in the takeoff and go around perf pages

Question 43

What does the FMGC focus its pitch orders to when in SRS mode?

Answer 43

Control the elevators to maintain the commanded speed target If speed cannot be maintained, it targets +120ft/min vertical speed If vertical speed cannot be maintained, it increases pitch up to 22.5 degrees

Question 44

What will be the risk associated with SRS changing to CLB during a windshear escape manoeuvre?

Answer 44

CLB mode works to maintain the speed target only, which could cause the aircraft to descend (while SRS ensures +120fpm vertical speed is targetted once speed cannot be maintained)