Microburst

Question 1

What is the expected duration of an individual microburst?

Answer 1

Seldom longer than 15 minutes from the time the burst strikes the ground until dissipation.

Question 2

Maximum downdrafts in a microburst encounter may be as strong as

Answer 2

6,000 feet per minute

Question 3

An aircraft that encounters a headwind of 45 knots, within a microburst, may expect a total shear across the microburst of

Answer 3

90 knots.

Question 4

(Refer to figure 13.) While flying an ILS approach, which aircraft will climb above the glide slope without changing pitch or power while passing through a microburst?

Answer 4

1

Question 5

(Refer to figure 13.) The aircraft in position 3 will experience which effect in a microburst encounter?

Answer 5

Strong downdraft.

Question 6

(Refer to figure 13.) How will the aircraft in position 4 be affected by a microburst encounter?

Answer 6

Performance decreasing with a tailwind and downdraft.

Question 7

(Refer to figure 13.) If involved in a microburst encounter, in which aircraft positions will the most severe downdraft occur?

Answer 7

3 and 4.

Question 8

Microbursts are characterized by having downdrafts which

Answer 8

can cause even a high performance aircraft to lose substantial altitude

Question 9

(Refer to figure 13.) When flying an ILS approach, an aircraft in position 4 which has encountered a microburst will experience what effect?

Answer 9

Strong tailwind