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PLOT PAGES (7 of 9)

APPROACH PLOT (continued)

Section 3:

• Current glideslope deviation
  This is the current deviation distance in dots from the active runway glideslope beam centreline (or virtual glide-slope if non-GS equipped). It is always calculated, irrespective of aircraft position.
• Current localiser deviation
  This is the current deviation distance in dots from the active runway centre line. It is always calculated, irrespective of the aircraft's position.
• Maximum glideslope deviation
  This is the maximum glideslope deviation from the active runway. It is always calculated, irrespective of the aircraft's position.
• This Maximum localiser deviation
  This is the maximum localiser deviation from the active runway. It is always calculated, irrespective of the aircraft's position.
• Threshold crossing height
  This is the height at which the aircraft crosses the runway threshold as it flies down the ILS glideslope.
• Touchdown distance
  This is the point to point distance from the aircraft to the active runway touchdown zone. This touchdown zone is represented on most runways as 2 large white blocks either side of the runway centreline, approximately 1000ft from the runway threshold.