Which flight level corresponds to a pressure ranging from 29.81 to 29.72?

Which flight level corresponds to a pressure ranging from 29.81 to 29.72?

• A. FL170
• B. FL190
• C. FL200
• D. FL210

Answer: (C)

The correct flight level that corresponds to a pressure range of 29.81 to 29.72 inches of mercury (inHg) can be understood by considering the relationship between pressure and flight levels, which are defined in standard altimeter settings. Flight levels are calculated based on a standard atmospheric pressure of 29.92 inHg, with each flight level representing a specific altitude in hundreds of feet. Specifically, the conversion between pressure and flight level is based on the decrease in pressure with altitude in a standard atmosphere. At a standard pressure setting of 29.92 inHg (the standard atmosphere), the conversion typically shows that each flight level corresponds to approximately 1,000 feet in altitude but with variations depending on local atmospheric conditions. For instance: - FL170 corresponds to approximately 29.92 inHg at 17,000 feet, - FL190 corresponds to approximately 29.82 inHg around 19,000 feet, - FL200 is around 29.73 inHg at 20,000 feet, - FL210 corresponds to a pressure level of about 29.64 inHg at 21,000 feet. Given the specified range of 29.81 to 29.72 inHg, FL200 falls

The correct flight level that corresponds to a pressure range of 29.81 to 29.72 inches of mercury (inHg) can be understood by considering the relationship between pressure and flight levels, which are defined in standard altimeter settings.

Flight levels are calculated based on a standard atmospheric pressure of 29.92 inHg, with each flight level representing a specific altitude in hundreds of feet. Specifically, the conversion between pressure and flight level is based on the decrease in pressure with altitude in a standard atmosphere.

At a standard pressure setting of 29.92 inHg (the standard atmosphere), the conversion typically shows that each flight level corresponds to approximately 1,000 feet in altitude but with variations depending on local atmospheric conditions.

For instance:

• FL170 corresponds to approximately 29.92 inHg at 17,000 feet,

• FL190 corresponds to approximately 29.82 inHg around 19,000 feet,

• FL200 is around 29.73 inHg at 20,000 feet,

• FL210 corresponds to a pressure level of about 29.64 inHg at 21,000 feet.

Given the specified range of 29.81 to 29.72 inHg, FL200 falls