Owais Crawford
At airports, the surface area is divided into two parts: the non-movement area and the movement area. The movement area, which includes taxiways and runways, is under the control of the Air Traffic Control (ATC) Tower, and all aircraft, vehicles, and pedestrians operating within it are required to maintain continuous communication with ATC. This ensures the safe and coordinated movement of all entities within the airport's operational airspace.
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What You'll Learn
Aircraft, vehicles, and pedestrians in the AMA must maintain contact with the ATC tower
The airport surface area is divided into two parts: the non-movement area and the movement area or Airport Movement Area (AMA). The movement area includes all taxiways and runways and is under the jurisdiction of the Air Traffic Control (ATC) tower.
The ATC tower is responsible for providing air traffic control services, directing aircraft traffic in the airspace under its responsibility, and controlling arrivals and departures at the airport. The ATC tower manages dozens of aircraft at a time, providing instructions and information to pilots to avoid collisions and maintain a safe distance between aircraft.
Therefore, all aircraft, vehicles, and pedestrians in the AMA must maintain contact with the ATC tower. This includes obtaining taxi clearance before entering the movement area and following instructions provided by the ATC tower. Failure to do so could result in safety hazards and disrupt the flow of air traffic.
Additionally, the ATC tower also controls ground traffic, including vehicles and pedestrians, within the movement area. This is to ensure the safe and efficient movement of all traffic within the airport and to prevent any potential hazards or conflicts with aircraft.
By maintaining contact with the ATC tower, aircraft, vehicles, and pedestrians can receive essential instructions and information, ensuring a safe and orderly flow of traffic within the AMA. This coordination is crucial in preventing incidents and maintaining the smooth operation of the airport. Additionally, applications and websites are available that share the live signals and interactions between ATC and pilots, which can be useful for training purposes.
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Airports are divided into movement and non-movement areas
Airports are divided into two distinct areas: the movement area and the non-movement area. This division is a standard protocol observed at towered airports, where the airport surface area is split into these two parts to facilitate efficient and safe operations.
The movement area primarily encompasses all taxiways and runways, falling under the direct jurisdiction of the control tower or Air Traffic Control (ATC). Any aircraft, vehicles, or pedestrians operating within this zone must maintain continuous communication with the ATC to ensure safe and coordinated movement within the airport's operational airspace. This area is marked by a dashed yellow line, indicating that clearance from the control tower is required to enter.
On the other hand, the non-movement area typically includes ramps and aprons, where aircraft can be moved or taxied without needing clearance from the control tower. This area is outside the direct control of ATC, providing more flexibility for ground operations. The boundary between the non-movement area and the taxiways is marked by two yellow lines: a solid line on the non-movement side and a dashed line on the movement side, similar to the markings on a highway.
It's important to note that temporary changes can be made to these designations. For example, a taxiway can be temporarily designated as a non-movement area in a NOTAM (Notice to Airmen). Additionally, airport management plays a crucial role in monitoring and reporting any conditions that may impact the safe use of the movement area, coordinating with ATC facilities to ensure the smooth flow of operations.
By dividing the airport into movement and non-movement areas, a clear structure is established, enabling efficient aircraft, vehicle, and pedestrian movement while maintaining the highest standards of safety within the complex airport environment.
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Movement areas include taxiways and runways
At airports, the surface area is divided into two parts: the non-movement area and the movement area. The movement area includes all taxiways and runways and is under the control of the control tower. This means that a taxi clearance from ATC Ground Control is required before entering the movement area.
The boundary between the non-movement area and the movement area is marked by two yellow lines: one solid and one dashed. The solid line is on the non-movement side, and the dashed line is on the movement side. This is similar to the double yellow line on a highway, where you can pass a car when the line is dashed but not when it is solid.
Taxiways are an important part of the movement area, as they allow aircraft to move between different parts of the airport. At some airports, aircraft may need to be held on a taxiway located in the approach or departure area of a runway to avoid interfering with operations on that runway. Holding position signs provide pilots with a visual cue to indicate the location of the holding position marking.
Runways are another crucial component of the movement area. They are specifically designated for aircraft take-off and landing and are subject to specific regulations and markings. For example, a "No Entry" sign prohibits aircraft from entering a particular area, often located at the intersection of vehicle roadways with runways or taxiways.
The movement area also includes the Air Operations Area (AOA), which comprises the aircraft movement area and parking area. Access to the AOA is restricted, and only authorised individuals with proper identification are permitted entry. This helps maintain security and ensure that only authorised personnel or passengers are granted access to aircraft and other secure locations within the airport.
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Non-movement areas include ramps and aprons
At towered airports, the airport surface area is divided into two parts: the movement area and the non-movement area. The non-movement area includes ramps and aprons and is not controlled by ATC (Air Traffic Control). This means that pilots can move their aircraft or taxi without clearance or communication with the control tower.
Ramps refer to areas where pre-flight activities are conducted. Passenger gates are the main feature of a terminal ramp. The term "ramp" is used in the US, Canada, the Maldives, and the Philippines, while the ICAO (International Civil Aviation Organization) and FAA (Federal Aviation Administration) use the term "apron" outside of these countries.
Aprons are designated areas for aircraft parking and maintenance. Apron control allocates aircraft parking stands (gates) and communicates this information to the control tower and airline handling agents. They also authorise vehicle movements to avoid conflicts with taxiing aircraft. The authority responsible for the aprons relays information about apron conditions, such as water, snow, construction, maintenance works, temporary hazards, and systems failures, to ATC.
The boundary between the non-movement area (ramps and aprons) and the movement area (taxiways and runways) is marked by two yellow lines: one solid and one dashed. Pilots must receive taxi clearance from ATC before crossing this boundary and entering the movement area.
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Airport management must report unsafe conditions
Airport management plays a crucial role in maintaining safety by observing and reporting on the condition of airport services, facilities, and movement areas. They are responsible for ensuring the safe and coordinated movement of all entities within the airport's operational airspace, including aircraft, vehicles, and pedestrians.
The movement area, which includes taxiways and runways, is under the control tower's jurisdiction. Any conditions that affect the safe use of this area must be reported to airport management for immediate action. For instance, if a runway condition restricts the use of a portion of the runway, airport management must be notified, and relevant information such as the take-off run available (TORA) and landing distance available (LDA) must be included in the report.
In addition, airport management must coordinate with Air Traffic Control (ATC) facilities to establish procedures for reporting unsafe conditions. This includes executing letters of agreement outlining the processes for originating NOTAMs (Notice to Airmen). These notices are crucial for informing pilots and aircraft operators of potential hazards, such as temporary changes to taxiways or the presence of hazardous wildlife.
Furthermore, airport management must maintain open communication with ATC towers to ensure the safe movement of aircraft within the airport's airspace. This continuous communication is essential for coordinating the movement of aircraft, vehicles, and pedestrians, especially in areas where aircraft have the right of way, such as designated taxiways.
Overall, airport management has a significant responsibility in maintaining airport safety by promptly reporting unsafe conditions, coordinating with relevant authorities, and ensuring efficient communication with ATC towers to facilitate safe aircraft operations. By adhering to these protocols, airport management contributes to the overall safety and smooth functioning of airport operations.
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Frequently asked questions
An airport movement area is defined as all taxiways and runways and is under the jurisdiction of the control tower.
The Air Traffic Control (ATC) Tower controls the airport movement area.
A taxi clearance is required prior to entering the airport movement area.
A movement area is controlled by ATC and requires clearance to enter, whereas a non-movement area is not controlled by ATC and can be entered without clearance.
Taxiway C at Helena Regional Airport is designated as a non-movement area.
