How can a windshear encounter during flight be avoided?
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A
Avoid take-off and landing during heavy showers or thunderstorms.
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B
Avoid areas of precipitation, particularly during winter, and choose low flight altitudes.
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C
Avoid take-offs and landings in mountainous terrain and remain in flat areas whenever possible.
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D
Stay away from thermally active areas, particularly in summer, or fly below these regions.
Refer to figures.
Windshear could be defined as an abrupt and localized change of wind velocity, that is strength, direction or both.
There can be several causes of low-level wind shear:
- The passage of the front in which the isobars change direction;
- A marked temperature inversion;
- Sea breeze;
- Topography and large buildings;
- Surface friction; and
- Cumulonimbus clouds, and their associated weather of heavy rain and hail, which can give rise to the phenomenon known as Microburst.
The primary methods a pilot can employ to avoid a potentially dangerous encounter with wind shear:
- Acknowledge the presence of wind shear;
- Ascertain the extent of the change;
- Stay ready to rectify the situation or execute a go-around maneuver promptly.
- Avoid take-off and landing especially during the passage of heavy showers or thunderstorms.
- If it is required initiate a "go-around" by:
- DISengaging the autopilot;
- Applying full power;
- Establishing the "best climb speed"
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Austro Control
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