During site selection, which measurement is used to determine suitability for MRES installation?

During site selection, which measurement is used to determine suitability for MRES installation?

• A. The slope between MAAS and the runway threshold
• B. The slope between the runway edge and MRES
• C. The slope between MAAS and MRES
• D. The slope between MAAS and the runway centerline

Answer: (C)

Assessing how the MRES will align with MAAS is what determines suitability. The slope between MAAS and MRES directly measures their relative position, telling you how steeply the MRES sits with respect to MAAS and whether the installation can meet required clearances, mounting angles, and access for maintenance. If this slope is acceptable, the installation can be arranged to maintain proper alignment, drainage, and structural stability. The other measurements involve distances or angles to runway features that don’t reflect how the two equipment elements relate to each other, so they don’t provide the critical information needed for determining whether the MRES can be installed safely and effectively with MAAS.

Assessing how the MRES will align with MAAS is what determines suitability. The slope between MAAS and MRES directly measures their relative position, telling you how steeply the MRES sits with respect to MAAS and whether the installation can meet required clearances, mounting angles, and access for maintenance. If this slope is acceptable, the installation can be arranged to maintain proper alignment, drainage, and structural stability. The other measurements involve distances or angles to runway features that don’t reflect how the two equipment elements relate to each other, so they don’t provide the critical information needed for determining whether the MRES can be installed safely and effectively with MAAS.