TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

APPROACH SURFACE BASELINE [1 record]

Record 1 2022-12-07

English

Subject field(s)
  • Aircraft Piloting and Navigation
DEF

A line aligned to the runway centerline (RCL) that lies in a plane parallel to a tangent to the WGS [World Geodetic System]-Ellipsoid at the landing threshold point.

OBS

It is used as a baseline reference for vertical measurement of the height of glidepath and OCS [obstacle clearance surface].

French

Domaine(s)
  • Pilotage et navigation aérienne
CONT

La ROC [marge de franchissement d'obstacles requise] diminue à mesure que la distance du repère d'approche finale (FAF) augmente puisque l'OCS [surface de franchissement d'obstacles] et la trajectoire de descente convergent vers la hauteur de la base de surface d’approche (ASBL).

Spanish

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