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DA will be published for all future instrument approach
procedures with vertical guidance.
Decision Height (DH) – See Decision Altitude
Departure End of Runway (DER) – The end of runway available for the ground run of an aircraft departure. The end of the runway that is opposite the landing
threshold, sometimes referred to as the stop end of the
runway.
altitude, velocity vector, and direction to all other aircraft and air traffic control facilities within a specific
area. Automatic dependent surveillance-broadcast
(ADS-B) information will be displayed in the cockpit
via a cockpit display of traffic information (CDTI) unit,
providing the pilot with greater situational awareness.
ADS-B transmissions will also provide controllers with
a more complete picture of traffic and will update that
information more frequently than other surveillance
equipment.
Automatic Terminal Information Service (ATIS) – A
recorded broadcast available at most airports with an
operating control tower that includes crucial information about runways and instrument approaches in use,
specific outages, and current weather conditions,
including visibility.
Center Radar ARTS Presentation/Processing (CEN-
RAP) – CENRAP was developed to provide an alternative to a non-radar environment at terminal facilities
should an ASR fail or malfunction. CENRAP sends aircraft radar beacon target information to the ASR terminal facility equipped with ARTS.
Changeover Point (COP) – A COP indicates the point
where a frequency change is necessary between navigation aids when other than the midpoint on an airway, to
receive course guidance from the facility ahead of the
aircraft instead of the one behind. These COPs divide
an airway or route segment and ensure continuous
reception of navigational signals at the prescribed minimum en route IFR altitude.
Charted Visual Flight Procedure (CVFP) – A CVFP
may be established at some towered airports for environmental or noise considerations, as well as when necessary for the safety and efficiency of air traffic
operations. Designed primarily for turbojet aircraft,
CVFPs depict prominent landmarks, courses, and recommended altitudes to specific runways.
Cockpit display of traffic information (CDTI) – The
display and user interface for information about air traffic within approximately 80 miles. It will typically
combine and show traffic data from TCAS, TIS-B, and
ADS-B. Depending on features, the display may also
show terrain, weather, and navigation information.
Collision Hazard – A condition, event, or circumstance that could induce an occurrence of a collision or
surface accident or incident.
Columns - See Database Columns
Contact Approach – An approach where an aircraft on
an IFR flight plan, having an air traffic control authorization, operating clear of clouds with at least one mile
flight visibility, and a reasonable expectation of contin
C-8
Descend Via – A descend via clearance instructs you to
follow the altitudes published on a STAR. You are not
authorized to leave your last assigned altitude unless
specifically cleared to do so. If ATC amends the altitude or route to one that is different from the published
procedure, the rest of the charted descent procedure is
canceled. ATC will assign you any further route, altitude, or airspeed clearances, as necessary.
Digital ATIS (D-ATIS) – An alternative method of
receiving ATIS reports by aircraft equipped with
datalink services capable of receiving information in
the cockpit over their Aircraft Communications
Addressing and Reporting System (ACARS) unit.
Diverse Vector Area (DVA) – An airport may establish
a diverse vector area if it is necessary to vector aircraft
below the minimum vectoring altitude to assist in the
efficient flow of departing traffic. DVA design requirements are outlined in TERPS and allow for the vectoring of aircraft immediately off the departure end of the
runway below the MVA.
Dynamic Magnetic Variation – A field which is simply a computer model calculated value instead of a
measured value contained in the record for a waypoint.
Electronic Flight Bag (EFB) – An electronic display
system intended primarily for cockpit or cabin use.
EFB devices can display a variety of aviation data or
perform basic calculations (e.g., performance data, fuel
calculations, etc.). In the past, some of these functions
were traditionally accomplished using paper references
or were based on data provided to the flight crew by an
airline’s “flight dispatch” function. The scope of the
EFB system functionality may also include various
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Instrument Procedures Handbook (IPH)仪表程序手册上(186)
