(These are listed on the Operational Information System.) Preferential Route Information in facilities.Īdvisories issued by ATCSCC. Operators should amend flight plans when they are more than 45 minutes from departure. They are issued to:Įnsure aircraft operate with the “flow” of traffic.Īvoid areas of known weather or where aircraft are deviating or refusing to fly. Reroutes are ATC routings other than the filed flight plan. (See Chapter 18, Section 12, Collaborative Trajectory Options Program ( CTOP).) (See Chapter 18, Section 11, Airspace Flow Programs ( AFP).)Ĭollaborative trajectory options program ( CTOP). (See Chapter 18, Section 10, Ground Delay Programs.)Īirspace flow programs. Normally, this involves departures from multiple airports. This is normally done when the operating environment supports holding and the weather conditions are expected to improve shortly this ensures aircraft are available to fill the capacity at the airport.ĭeparture Sequencing Program ( DSP)- Assigns a departure time to achieve a constant flow of traffic over a common point. Planned holding of aircraft may be utilized. Assigning an aircraft a fix other than in the filed flight plan in the arrival or departure phase of flight to equitably distribute demand.Īirborne holding. It is normally used in a non-radar environment, or when transitioning to a non-radar environment, or additional spacing is required due to aircraft deviating around weather.įix balancing. The number of minutes required between successive aircraft. MIT are used to apportion traffic into manageable flows, as well as, provide space for additional traffic (merging or departing) to enter the flow of traffic. The criteria may be airport, fix, altitude, sector, or route specific. The number of miles required between aircraft that meet specific criteria. LAADR requires a written agreement with the customers prior to implementing. LAADR may apply to the departure or the arrival phase of flight. A set of routings with altitude expectations for usage in times of capacity constraints in the NAS. Low Altitude Arrival/Departure Routing (LAADR). Capping may apply to the initial segment of the flight or for the entire flight. Tunneling- Term to indicate aircraft will be descended prior to the normal descent point to avoid airspace or traffic constraints.Ĭapping- Term to indicate aircraft will be cleared to an altitude lower than their requested altitude until they are clear of a particular airspace. To maintain the integrity of the air traffic system, facility TM personnel must employ the least restrictive methods available to minimize delays.Īltitude: used to separate different flows of traffic or flights flying in close proximity to each other. Comply with restrictions issued by the receiving controller unless otherwise coordinated. See FAA Order JO 7110.65, subparagraph 5-4-5e. TMIs do not include controller coordinated actions.
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