Aerodrome Visual Aids Flashcards
Chevron Markings
Pre-threshold area exceeds 60m, can be used as stopway.
Centre-line markings
Uniformly spaced stripes and gaps
Used on a PAVED runway
Threshold Piano Keys
18m - 4
23m - 6
30m - 8
45m - 12
60m+ - 16m
Divide or multiply by 3.7 to find stripes / width
Transverse Stripe
Used on displaced threshold. One white line going width across.
Aiming Point
LDA 2400m or more - 400m from threshold to beginning of marking.
TDZ Markings
Spaced 150m apart.
Code 4 runways have 6 pairs
If aiming point within 50m of threshold, it is deleted.
Side Stripe Markings
Threshold of precision runways
Lack of contrast between runway edges and surrounding terrain.
Taxiway Centreline
Continuous yellow line - paved taxiway
Non Load Bearing Surfaces
Solid yellow solid lines.
Mandatory Signs
Red background, white writing.
On the left
Apron Safety Lines
Conspicuous markings that contrast with a/c stand markings
Pattern A
Closest to runway, mandatory sign to hold
Pattern B
Furthest from runway, ILS sensitive/critical areas.
E.g “09CATIII”
When will a runway holding point be established?
At the intersection of a runway with another runway, when the former runway s part of a standard taxi-rout.
Intermediate Holding Positions
Single yellow broken lines.
