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)

To determine the correct flight level corresponding to a pressure ranging from 29.81 to 29.72 inches of mercury (inHg), it is essential to understand how flight levels are defined in relation to atmospheric pressure. Flight levels are typically expressed in hundreds of feet and represent standard pressure settings. At standard atmospheric pressure, 29.92 inHg corresponds to a flight level of FL180, which is at an altitude of 18,000 feet. As you descend in pressure, flight levels increase. For instance, at a pressure of 29.92 inHg, FL180 is established, while a slight decrease to 29.80 inHg would correspond to FL170, and a further decrease leads to FL160, and so on. In the case of a pressure range from 29.81 to 29.72 inHg, this indicates that the associated flight levels would be higher than FL180. Specifically, at 29.72 inHg, the pressure correlates to FL200, where the aircraft would typically be flying at about 20,000 feet. This is supported by the fact that lower pressures lead to corresponding higher flight levels since the aircraft would need to maintain a certain safe height above terrain and obstacles within that pressure

To determine the correct flight level corresponding to a pressure ranging from 29.81 to 29.72 inches of mercury (inHg), it is essential to understand how flight levels are defined in relation to atmospheric pressure. Flight levels are typically expressed in hundreds of feet and represent standard pressure settings.

At standard atmospheric pressure, 29.92 inHg corresponds to a flight level of FL180, which is at an altitude of 18,000 feet. As you descend in pressure, flight levels increase. For instance, at a pressure of 29.92 inHg, FL180 is established, while a slight decrease to 29.80 inHg would correspond to FL170, and a further decrease leads to FL160, and so on.

In the case of a pressure range from 29.81 to 29.72 inHg, this indicates that the associated flight levels would be higher than FL180. Specifically, at 29.72 inHg, the pressure correlates to FL200, where the aircraft would typically be flying at about 20,000 feet. This is supported by the fact that lower pressures lead to corresponding higher flight levels since the aircraft would need to maintain a certain safe height above terrain and obstacles within that pressure