Speed Assignments

When assigning airspeeds, use the following:

1. To aircraft operating between FL 280 and 10,000 feet, a speed not less than 250 knots or the equivalent Mach number.
2. To aircraft operating beneath Class B airspace or in a VFR corridor designated through Class B airspace: assign a speed not more than 200 knots.
3. To arrival aircraft operating below 10,000 feet:
   1. Turbojet aircraft:
      1. Assign a speed not less than 210 knots, except for the aircraft as specified in subparagraph b above, or
      2. Assign a speed not less than 170 knots when the aircraft is within 20 flying miles of the runway threshold.
   2. Reciprocating and turboprop aircraft:
      1. Assign a speed not less than 200 knots, or
      2. Assign a speed not less than 150 knots when the aircraft is within 20 flying miles of the runway threshold.
4. To departures:
   1. Turbojet aircraft: assign a speed not less than 230 knots.
   2. Reciprocating and turboprop aircraft: assign a speed not less than 150 knots.
5. To helicopters: Assign a speed not less than 60 knots.
6. Lower speeds may be assigned when operationally advantageous.