Met

Question 1

What are the Indications of Windshear?

Answer 1

Unacceptable flight path deviations recognised as uncontrolled changes from normal steady state flight conditions below 1000’ AGL, in excess of any of the following:
1. 15KIAS,
2. 500fpm V/S,
3. 5° pitch,
4. 1 dot glide-slope,
5. Unusual thrust settings for a significant period of time,
Or wind-shear immediate alert warning.

Question 2

What are some signs of possible windshear?

Answer 2

1. TS;
2. Virga;
3. Pilot reports;
4. LLWAS warnings;
5. Horizontal wind changes;
6. High gusts.

Question 3

What are some common causes of windshear?

Answer 3

1. Frontal surfaces;
2. Jetstreams;
3. Thunderstorms;
4. Mountain waves;
5. Microbursts;
6. Gust fronts;
7. Surface obstructions;
8. Sea breezes.