What is the minimum width for the 180 MRT (Fixed) configuration?

What is the minimum width for the 180 MRT (Fixed) configuration?

• A. 210
• B. 228
• C. 240
• D. 250

Answer: (B)

The question tests how the minimum corridor width is determined from the aircraft’s turning envelope in a specific configuration. For the 180 MRT (Fixed) setup, you must provide enough width to accommodate the full lateral path of the aircraft during a 180-degree maneuver. That path forms a circle whose radius is defined by the MRT parameter; the required width is the diameter of that circle. With the MRT geometry in this configuration, the diameter comes out to 228 feet, so that is the smallest width that safely accommodates the aircraft’s footprint. Wider options would exceed the minimum clearance, while narrower ones would not provide enough clearance for the turn.

The question tests how the minimum corridor width is determined from the aircraft’s turning envelope in a specific configuration. For the 180 MRT (Fixed) setup, you must provide enough width to accommodate the full lateral path of the aircraft during a 180-degree maneuver. That path forms a circle whose radius is defined by the MRT parameter; the required width is the diameter of that circle. With the MRT geometry in this configuration, the diameter comes out to 228 feet, so that is the smallest width that safely accommodates the aircraft’s footprint. Wider options would exceed the minimum clearance, while narrower ones would not provide enough clearance for the turn.