AS 408 TEST 2 (ERAU-GALLUP) QUESTIONS & ANSWERS
Microburst definition and types - Answer -Intense downdrafts that can be found near
thunderstorms
Wet or dry
Microburst detection - Answer -Low-level wind shear alert system; 6-30 ultrasonic
towers
Microburst size - Answer -Up to 2.5 miles wide
Microburst speed - Answer -3,000 - 6,000fpm downdraft
Microburst duration - Answer -8-15 minutes
Famous microburst accidents - Answer -Eastern Flight 66
Delta Flight 191
Windshear definintion - Answer -Rapid change in wind direction or velocity
Severe: Airspeed change of ≥ 15kts or ≥ 500 fpm
American Airlines Flight 331 - Answer -AC touched down 4,000ft down a 8,911 ft
runway
Third Day of a Three Day Trip
14kt tailwind
30 flaps were used instead of 40
Late application of brakes and thrust reverser
Overran the end of the runway at 70kts
Types of structural icing - Answer -Clear
Rime
Mixed
Clear ice temperature range - Answer -2 to -10°C
Rime ice temperature range - Answer --15 to -20°C
Mixed ice temperature range - Answer --10 to -15°C
Global Air Flight 73 - Answer -Montrose airport, Nov 28, 2004
Second flight of the day
Microburst definition and types - Answer -Intense downdrafts that can be found near
thunderstorms
Wet or dry
Microburst detection - Answer -Low-level wind shear alert system; 6-30 ultrasonic
towers
Microburst size - Answer -Up to 2.5 miles wide
Microburst speed - Answer -3,000 - 6,000fpm downdraft
Microburst duration - Answer -8-15 minutes
Famous microburst accidents - Answer -Eastern Flight 66
Delta Flight 191
Windshear definintion - Answer -Rapid change in wind direction or velocity
Severe: Airspeed change of ≥ 15kts or ≥ 500 fpm
American Airlines Flight 331 - Answer -AC touched down 4,000ft down a 8,911 ft
runway
Third Day of a Three Day Trip
14kt tailwind
30 flaps were used instead of 40
Late application of brakes and thrust reverser
Overran the end of the runway at 70kts
Types of structural icing - Answer -Clear
Rime
Mixed
Clear ice temperature range - Answer -2 to -10°C
Rime ice temperature range - Answer --15 to -20°C
Mixed ice temperature range - Answer --10 to -15°C
Global Air Flight 73 - Answer -Montrose airport, Nov 28, 2004
Second flight of the day