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Presented by
National Oceanic and Atmospheric Administration
National Weather Service
Warning Decision Training Branch
Aviation Weather Aviation Weather Training for FAA Air Training for FAA Air Traffic ControllersTraffic Controllers
Aviation Weather Aviation Weather Training for FAA Air Training for FAA Air Traffic ControllersTraffic Controllers
Adverse WindAdverse Wind
2Adverse Wind
You will identify the characteristics and effects You will identify the characteristics and effects of adverse wind that impact aviation.of adverse wind that impact aviation.
ObjectivesObjectivesObjectivesObjectives
3Adverse Wind
MotivationMotivationMotivationMotivation
4Adverse Wind
Responsible for most Responsible for most weather-related weather-related accidentsaccidents
Often trigger air traffic Often trigger air traffic management decisions management decisions that adversely impact that adversely impact traffictraffic
Adverse WindAdverse WindAdverse WindAdverse Wind
5Adverse Wind
Adverse Wind PhenomenaAdverse Wind PhenomenaAdverse Wind PhenomenaAdverse Wind Phenomena
6Adverse Wind
CrosswindCrosswindCrosswindCrosswind
Crosswind - A wind that has a Crosswind - A wind that has a component directed component directed perpendicularly to the perpendicularly to the heading of an aircraft. The heading of an aircraft. The drift produced by crosswind drift produced by crosswind is critical to air navigation, is critical to air navigation, being especially dangerous being especially dangerous during takeoff and landing.during takeoff and landing.
7Adverse Wind
Gust – A sudden, brief Gust – A sudden, brief increase in the speed increase in the speed of the wind.of the wind.
GustsGustsGustsGusts
8Adverse Wind
Tailwind – A wind with a component of Tailwind – A wind with a component of motion from behind the aircraft.motion from behind the aircraft.
TailwindTailwindTailwindTailwind
9Adverse Wind
Variable wind – Wind that changes Variable wind – Wind that changes direction frequently.direction frequently.
Sudden wind shift – A line or Sudden wind shift – A line or narrow zone along which there is narrow zone along which there is an abrupt change of wind an abrupt change of wind direction.direction.
Variable Wind / Sudden Wind Variable Wind / Sudden Wind ShiftShift
Variable Wind / Sudden Wind Variable Wind / Sudden Wind ShiftShift
10Adverse Wind
Airplanes with Airplanes with higher approach higher approach speeds are less speeds are less affected by affected by crosswinds and crosswinds and tailwindstailwinds
Effects of Approach SpeedEffects of Approach SpeedEffects of Approach SpeedEffects of Approach Speed
11Adverse Wind
Even if an airplane is oriented into the wind, Even if an airplane is oriented into the wind, gusts during takeoff and landing may cause the gusts during takeoff and landing may cause the aircraft to _______.aircraft to _______.
A.A. drift off the side of the runwaydrift off the side of the runway
B.B. bounce on the runwaybounce on the runway
C.C. roll off the end of the runwayroll off the end of the runway
Response ItemResponse ItemResponse ItemResponse Item
12Adverse Wind
A variable wind, even at low speeds, can be A variable wind, even at low speeds, can be hazardous on takeoff and landing because it hazardous on takeoff and landing because it could _______.could _______.
A.A. cause engine failurecause engine failure
B.B. cause the plane to bounce on the runwaycause the plane to bounce on the runway
C.C. quickly become a crosswind or tailwindquickly become a crosswind or tailwind
Response ItemResponse ItemResponse ItemResponse Item
13Adverse Wind
_______ perform better in adverse winds _______ perform better in adverse winds because most have demonstrated tailwind and because most have demonstrated tailwind and crosswind thresholds that exceed FAA runway crosswind thresholds that exceed FAA runway thresholds.thresholds.
A.A. Larger airplanesLarger airplanes
B.B. Smaller airplanesSmaller airplanes
C.C. HelicoptersHelicopters
Response ItemResponse ItemResponse ItemResponse Item
14Adverse Wind
The EndThe EndThe EndThe End
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