Atc tower facility levels code#

Pilot: ' Danbury Clearance, Cessna One Seven Two Seven Victor at Arrow, Information Alpha, VFR to the west, requesting 4,500'.The complexity of the radio call depends upon if the pilot is departing under Visual Flight Rules (VFR) or Instrument Flight Rules (IFR).

Atc tower facility levels code#

Before calling for a clearance, however, pilots must listen to the Automated Terminal Informatino Service or Automated Surface Observing System (ASOS)/Automated Weather Observing System (AWOS) to receive local weather/NOTAMs as well as the information code.Clearances may, however, be obtained via Flight Service via phone, or radio, approach control, ARTCC, via a relay clearance.Pilots generally obtain their clearance by contacting clearance delivery or ground before engine start.Reading back a clearance implies acceptance unless you reject it and give a reason in favor of receiving an amended clearance.A clearance is not an authorization to deviate from any rule, regulation, or minimum altitude nor to conduct unsafe operations of an aircraft.Clearances are issued based on a prediction of known traffic and known physical airport conditions.An ATC clearance is an authorization for an aircraft to proceed under specified conditions within controlled airspace.Chart Supplement as well as several online sources such as Clearance delivery frequencies can be found in the U.S.Clearance delivery has no control function and is used solely as the name implies, for the delivery of clearances.Where clearance delivery is not a dedicated frequency, ground control absorbs this function.Clearance delivery is established at busy airports to facilitate the delivery of flight instructions without congesting the ground frequency.The municipality has the option of using its own employees or subcontracting for these services. Non-federal low-activity VFR ATCT providing air traffic control services for a municipality or subdivision thereof which is not under contract to the FAA. This terminal requires such a large number of radar control positions that it precludes the rotation of controllers through all positions. Some may provide tower services along with approach control and en route services.Īn airport traffic control terminal that provides traffic advisories, spacing, sequencing and separation services to VFR and IFR aircraft operating within the vicinity of the airport using a combination of radar and direct observations.Īn air traffic control terminal that provides radar approach control services for two or more large hub airports, as well as other satellite airports, where no single airport accounts for more than 60 percent of the total Combined TRACON facility’s air traffic count. These towers provide air traffic advisories, spacing, sequencing, and separation services to VFR aircraft operating within the vicinity of the airport using direct observation and a radar display as an extension of direct observation.Īn air traffic control facility that provides approach control services for one or more airports as well as en route air traffic control (center control) for a large area of airspace. These two areas are located within the same facility, or in close proximity to one another, and controllers rotate between both areas.Ĭombination Non-Radar Approach Control and Tower without RadarĪn air traffic control terminal that provides air traffic control services for the airport at which the tower is located and without the use of radar, approach and departure control services to aircraft operating under Instrument Flight Rules (IFR) to and from one or more adjacent airports.Īn air traffic control tower that is not responsible for using radar to separate traffic. This terminal is divided into two functional areas: radar approach control positions and tower positions. These terminals are located at airports where the principal user category is low performance aircraft.Īn air traffic control terminal that provides radar-control service to aircraft arriving or departing the primary airport and adjacent airports, and to aircraft transiting the terminal’s airspace.Ĭombination Radar Approach Control and Tower with RadarĪn air traffic control terminal that provides radar control services to aircraft arriving or departing the primary airport and adjacent airports, and to aircraft transiting the terminal’s airspace. These are facility types still available in OPSNET:Īn airport traffic control terminal that provides service using direct observation primarily to aircraft operating under Visual Flight Rules (VFR). Today, facilities are sorted by classifications, but facility types are still available in OPSNET for historical purpose. Before July 1, 2008, OPSNET allowed the input of data by facility types.