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7 Cards in this Set
- Front
- Back
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Define Indicated Altitude |
Altimeter reading |
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Define True Altitude |
height above MSL AA = height AGL |
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Define Absolute Altitude |
height above terrain |
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Define Pressure Altitude |
height when altimeter set to 29.92mmHg |
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Define DENSITY ALTITUDE |
PA corrected for nonstandard T * most important factor affecting airplane performance DA = (T - 15°C or 59°F) x 120 + PA |
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What Affects Density Altitude? |
Humidity: ↑ DA - humidity decreases air density (water molecules take the place of air molecules) Temperature: ↑ DA - air molecules moving faster, decreasing density Altitude: ↑ DA - air is less with ↑ altitude |
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What is Relationship between Density Altitude and Aircraft Performance? |
↑ DA lead to ↓ performance |
