Methods of Microburst Detection

AVIATION WEATHER

CHAPTER FOUR

here until the reaching position 3. At this point, the aircraft will be in a severe downdraft, and a

transition from a strong headwind to a strong tailwind will occur (position 4). The resulting loss

of indicated airspeed and lift will cause the aircraft to pitch down and lose altitude. At this point

(or earlier), the correct reaction would be to add maximum power and establish a climbing

attitude on the vertical gyro. Chances of successful recovery depend on reaction time, aircraft

performance capabilities, and the altitude of the aircraft.

Figure 4-8 Attitude Changes with Microburst Penetration

If you encounter a microburst on final approach or on takeoff, the results could be disastrous.

The best course of action is to avoid microbursts at all costs. This point cannot be over

emphasized. You must always be alert for the warning signs of a microburst. Remember, avoid,

avoid, avoid. You may only get one chance to make a life or death decision.

Methods of Microburst Detection

Microbursts are such a dangerous phenomenon, early detection is vital to mishap prevention. In

most microburst accidents warning signs have been ignored, misinterpreted, or misunderstood.

You must evaluate the warning signs and make a decision quickly and decisively. Here are some

very important clues indicating the presence of microburst.

Ground-based Doppler radar now has the capability to accurately detect hazards that can take the

form of microbursts, tornadoes, and other low-level wind shear activity. Therefore, when

weather observations or recordings mention low-level wind shear, or call for gusty winds, heavy

rain, or severe thunderstorms, be aware the potential for microburst activity exists.

Thunderstorms

4-9