Which of the following best describes the term 'Stationary front' as used in flight operations?

• A. The stationary weather boundary.
• B. A turn greater than standard rate; in visual flight, anything greater than a 45° bank.
• C. A fixed radio navigation feature.
• D. A flight maneuver limiting bank angle to 30°.

Answer: (B)

A stationary front is a weather boundary between two contrasting air masses that isn’t moving much relative to the ground. In flight operations, this boundary can bring persistent weather conditions such as clouds, rain, and shifting winds, which pilots must anticipate for planning and during the flight. The other descriptions describe actions or features unrelated to weather boundaries—maneuvers with bank angles or fixed radio navigation aids—so they don’t describe what a stationary front is. Therefore, the term refers to a stationary weather boundary and the weather it brings.