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11 Cards in this Set
- Front
- Back
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Airspeed or vertical speed changes greater than this is considered windshear
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15 knots or 500 fpm
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Typical duration of a microburst
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2-5 min.
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Typical diameter of a microburst
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2 miles
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Vertical speed which microburst downdrafts can exceed
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6000 fpm
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Maximum temperature for heating the canopy transparency when deicing
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150º F
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Outside air temperature where icing may occur
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≤ 5º C
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Amount of slush or water in which hydroplaning may occur
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> 0.1 inch
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Airspeed at which hydroplaning on the nose tire may occur (normal tire pressure)
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≥ 85 knots
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Airspeed at which hydroplaning on the main tires may occur (normal tire pressure)
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≥ 115 knots
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Preheating is recommended prior to engine start (outside air temperature)
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< -29º C
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External power is recommended for engine start (outside air temperature)
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< -18º C
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