16.2 ATC Facilities, Separation, ICAO Flight Plans, and Traffic Management

Make the Company Plan and ATC Plan Consistent

ATC manages traffic and clearances; the carrier manages operational control under its applicable system. The practical test includes facilities/equipment, separation, flight-plan filing, routing and rerouting, priority handling, and traffic management. A dispatcher should be able to prepare and update the ATC plan while verifying that its route remains within the authorized, safe company plan.

ATC facilities and responsibilities

Airport traffic control towers manage the traffic and movements within their responsibilities. TRACON/approach control supports terminal sequencing and radar services where available. ARTCCs manage enroute traffic in their areas, with oceanic/remote procedures as applicable. The Air Traffic Control System Command Center (ATCSCC) coordinates system traffic-management initiatives. Flight Service supplies its applicable briefing, flight-plan, communication, and emergency assistance services.

ATC clearance does not verify every airline fuel reserve, crew qualification, MEL restriction, or weight/performance input. A PIC and dispatcher cannot accept an operationally unsafe routing solely because ATC offered it. Conversely, a company release amendment does not authorize a flight to disregard an ATC clearance when a clearance change is required.

Separation and surveillance

FAA separation depends on airspace, surveillance/procedural methods, aircraft categories, wake requirements, and the situation. Common terminal radar minima include three nautical miles in applicable conditions, with five miles in other applicable radar circumstances; exceptions and specialized standards exist. Do not convert these examples into one universal minimum in every region or flight phase.

Vertical separation generally uses 1,000 feet below FL290 and in eligible RVSM operations from FL290 through FL410, with larger applicable separation elsewhere. Wake categories and their applicable approach/departure standards add separate requirements. An aircraft classified Large under a legacy wake scheme can be assigned differently under an implemented wake recategorization program. Use the actual ATC procedure and aircraft category rather than memorizing one distance for every pair.

Dispatch planning accounts for potential spacing and delays in fuel/alternate decisions. A radar label proving position does not remove the PIC's assigned navigation responsibility. At a non-towered airport, airport traffic coordination and the company's authorized terminal procedures matter even when an IFR clearance was issued by a remote facility.

ICAO flight-plan form

FAA Form 7233-4, the ICAO/international-format flight plan, supports domestic and international filing as applicable. Study its field meanings and the operator's approved filing method. Important information includes aircraft identification, flight rules/type, aircraft type/wake category, equipment/capabilities, departure time, route/speed/level, destination elapsed time and alternates, and required other information.

Capability codes are assertions

A code is not a request to receive an approval. For example, filing RVSM or PBN capability asserts that the actual aircraft and operation meet the relevant conditions. A deferred navigation, data-link, or altitude-keeping item can require changes to equipment codes, route, level, or procedures. Consult the current FAA/ICAO instructions for exact codes; do not construct an unverified code string from remembered abbreviations.

Check the difference between installed equipment, serviceability, and operational authorization. The aircraft may have a radio or sensor yet lack the required approved use for a route or approach. Ensure the filing and company release use the same applicable capability basis and version of the plan.

Filing, amendment, cancellation, and refiling

The operator submits the applicable plan through its approved service/provider or ATC process. A filed plan is not automatically an airborne clearance. Confirm actual clearance and any restrictions before flight. Changes to departure, route, destination, or capability require the applicable amendment procedure; an obsolete plan must be cancelled or superseded appropriately rather than leaving conflicting versions.

When ATC reroutes an active flight, evaluate revised time, fuel, terrain, aircraft restrictions, weather, and alternate impact. Coordinate any required company release amendment and ATC plan update. Intermediate stops, refueling, and provisional airports need their actual authorization and current operational assessment. Do not treat the original release as an unlimited permission to insert any airport later.

Traffic-management tools

A ground delay program (GDP) manages arrival demand at a constrained airport using departure delays and assigned times. A ground stop holds affected departures under its stated scope. An airspace flow program (AFP) manages constrained airspace demand. Other tools include miles-in-trail restrictions, reroute advisories, coded departure routes, and national playbook routes. Their scope, times, and exemptions vary.

An expected departure clearance time (EDCT) is a traffic-management timing element, not guaranteed takeoff permission or a forecast that destination weather will improve. Recheck the applicable current initiative and coordinate changes through approved channels. A route offered to bypass a constrained area can increase burn and alter ETOPS or other capability requirements.

Worked disruption exercise

A fictional flight is ready for a two-hour route, but a GDP adds a ground delay and ATC offers a longer northern routing. The dispatcher compares waiting with rerouting using current forecast windows, taxi/holding allowances, takeoff weight, cruise performance, and destination/alternate requirements. Crew scheduling assesses applicable duty implications. If the northern route demands a capability removed by an MEL item, that option is unavailable even if its predicted arrival is earlier.

The chosen plan is filed/amended consistently, and the crew receives the route and operational consequences. During flight, an emergency needing priority is communicated explicitly; “minimum fuel” alone is not an emergency priority request. At arrival or cancellation, close the applicable plan and records under their procedures. This completes the ATC lifecycle instead of ending the practical exercise at the first filed route.

Official References

Source check: 2026-10-12. FAA AIM clearances and flight plans; Lost communications § 91.185; Route communications § 121.99; FAA dispatcher PTS. For operational use, apply current issued authorizations and the assigned aircraft’s approved data.