Inside 12 miles, the vertical separation for jets and turboprops can be reduced to 800 feet.

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Inside 12 miles, the vertical separation for jets and turboprops can be reduced to 800 feet.

Inside 12 miles, the airspace can use a tighter vertical separation between jets and turboprops because controllers can rely on steady monitoring and precise altitude-keeping with good radar coverage and standard instrument guidance in this terminal area. Reducing the separation to 800 feet still maintains a safe gap when both aircraft are on compatible vertical profiles, reporting altitudes, and are operating in a well-controlled environment where wake turbulence considerations and spacing are managed. The figure of 800 feet is chosen as a safe compromise to improve flow without sacrificing safety in that zone. A larger separation, like 1000 feet, is typical further out, while going down to 500 or 600 feet would not provide enough margin given potential altitude-pitch control variations and monitoring limitations.

Inside 12 miles, the airspace can use a tighter vertical separation between jets and turboprops because controllers can rely on steady monitoring and precise altitude-keeping with good radar coverage and standard instrument guidance in this terminal area. Reducing the separation to 800 feet still maintains a safe gap when both aircraft are on compatible vertical profiles, reporting altitudes, and are operating in a well-controlled environment where wake turbulence considerations and spacing are managed. The figure of 800 feet is chosen as a safe compromise to improve flow without sacrificing safety in that zone. A larger separation, like 1000 feet, is typical further out, while going down to 500 or 600 feet would not provide enough margin given potential altitude-pitch control variations and monitoring limitations.

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