If the pressure altitude remains at 5,000 feet, what is the effect of a temperature increase from 25 to 50°F on density altitude?

If the pressure altitude remains at 5,000 feet, what is the effect of a temperature increase from 25 to 50°F on density altitude?

• A. 1,200-foot increase.
• B. 1,400-foot increase.
• C. 1,650-foot increase.
• D. No change.

Answer: (C)

In aviation, density altitude is directly affected by temperature; as temperature increases, density altitude also increases. When the pressure altitude is held constant, rising temperatures lead to a decrease in air density, which in turn increases the density altitude. The situation presented indicates that the pressure altitude is maintained at 5,000 feet, with a temperature increase from 25 to 50°F. This temperature rise will alter the air density, causing the density altitude to rise as well. To quantify this, it's important to understand that for every degree Fahrenheit increase in temperature above the standard temperature at that pressure altitude, the density altitude can increase significantly. Typically, a rule of thumb is that for every 1°F increase, the density altitude increases by approximately 120 feet at a pressure altitude of about 5,000 feet. In this case, the temperature changes from 25°F to 50°F, resulting in a change of 25°F. Multiplied by the standard increase of approximately 120 feet per degree Fahrenheit, this results in an increase of roughly 3,000 feet (25°F x 120 feet/°F). When calculating the specific increases given in the answer choices, the result leads to a specific identified increase, thus indicating that the

In aviation, density altitude is directly affected by temperature; as temperature increases, density altitude also increases. When the pressure altitude is held constant, rising temperatures lead to a decrease in air density, which in turn increases the density altitude.

The situation presented indicates that the pressure altitude is maintained at 5,000 feet, with a temperature increase from 25 to 50°F. This temperature rise will alter the air density, causing the density altitude to rise as well.

To quantify this, it's important to understand that for every degree Fahrenheit increase in temperature above the standard temperature at that pressure altitude, the density altitude can increase significantly. Typically, a rule of thumb is that for every 1°F increase, the density altitude increases by approximately 120 feet at a pressure altitude of about 5,000 feet.

In this case, the temperature changes from 25°F to 50°F, resulting in a change of 25°F. Multiplied by the standard increase of approximately 120 feet per degree Fahrenheit, this results in an increase of roughly 3,000 feet (25°F x 120 feet/°F). When calculating the specific increases given in the answer choices, the result leads to a specific identified increase, thus indicating that the