If the sensor is not installed at touchdown areas, what location serves as the center of the runway complex for temperature, dew point, pressure, lightning and winds?

• A. The control tower
• B. The center of the runway complex
• C. The runway edge
• D. The observation location

Answer: (B)

When a sensor isn’t placed at the touchdown areas, the center of the runway complex is used as the reference point for ambient readings such as temperature, dew point, pressure, lightning, and winds. This location provides a representative snapshot of the air conditions that affect the runway operations as a whole, avoiding localized effects near the ends of the runway where heat, pavement, and aircraft activity can skew measurements. By standardizing on the center of the runway complex, weather observations stay consistent and comparable for pilots and controllers across the entire runway area. The other spots—like the control tower, the runway edge, or a generic observation location—either aren’t positioned to reflect the conditions encountered by the runway environment or aren’t the standardized site for all these measurements, making them less suitable as the central reference.