Predictive Windshear Alerts

Question 1

PWS alerts are provided by the _____

Answer 1

Weather radar

Question 2

Predictive windshear alerts are inhibited by these 3 things:

Answer 2

1. Actual windshear
2. Look ahead terrain alerts
3. RA based alerts

Question 3

T/F The WX RDR does not provide alerting for ALL types of windshear, the pilot must continue to rely on traditional windshear avoidance methods.

Answer 3

True

Question 4

“Windshear ahead”

Answer 4

Windshear close and directly ahead.

Takeoff to 1200 RA

Question 5

“Go-around, windshear ahead”

Answer 5

Windshear within 1.5 miles and directly ahead

During approach below 1200 RA

Question 6

“Monitor Radar Display”

Answer 6

Windshear within 3 miles ahead of the aircraft

TAKEOFF and APPROACH below 1200 RA

Question 7

Radar automatically begins SCANNING for windshear when:

Answer 7

1. Thrust levers set for takeoff (whether engine off or IRS not aligned)
2. In flight below 2300 RA (ALERTS NOT UNTIL BELOW 1200 RA)

Question 8

Windshear alerts available approximately ____ seconds after the WX RDR begins scanning

Answer 8

12 seconds

*Have WX RDR on to save the 12 seconds

Question 9

During takeoff and landing, new predictive windshear CAUTION alerts are inhibited between ____ knots and ____ RA

Answer 9

80 knots and 400 RA

Question 10

During takeoff and landing new WARNING alerts are inhibited between _____ knots and _____ RA

Answer 10

100 knots and 50 RA

Question 11

Actions in response to PWS caution (“Monitor Radar Display”) or warning (Windshear ahead, windshear ahead, go around”)

Answer 11

Prior to initiating takeoff roll - Delay takeoff
Takeoff roll to V1 - REJECT
After V1 - Apply max thrust and continue normal takeoff
During approach - (Caution) if stabilized approach can be maintained land, if not, go around normally (Warning) Go around with two TOGA pushes