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Change-over Point Distance (CPD)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: cpd.ttl
- Name
changeOverPointDistance- Datatype
- Real
- Definition
- The DME distance from the previous VORDME, VORTAC or TACAN to the point at which an aircraft navigating on an Air Traffic Service (ATS) route segment is expected to transfer its primary navigational reference to the next facility ahead of the aircraft.
- Description
- Change-over points are established to provide the optimum balance in respect of signal strength and quality between facilities at all levels to be used and to ensure a common source of azimuth guidance for all aircraft operating along the same portion of an Air Traffic Service (ATS) route segment.
- Accepted
- 2013-10-18
- Defined by
- DFDD
- Physical quantity
- length
- Recommended unit
- Nautical Mile
- Used by
- GA011 Air Traffic Service (ATS) Route Segment Direction
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.