A/d Visual Aids And Markings Flashcards
A/d visual aids and markings are located in annex
14
Colour of the wind direction indicator
Where possible a single colour - white or orange
Wind sock
Should be visible from the a/c in flight and on the movement area
L/d direction indicator is a
White or orange T
ATC signalling lamp colours
Red white and green
Able to be aimed manually
Capable of transmitting morse code
Signals panel and signals area is used for
Non radio traffic
Lack of this - non radio traffic is not except in an emerg
R/y marking colours
White
T/y markings colour
Yellow
Yellow chevrons indicate
When the pre t/hold area exceeds 60m and not suitable for use but can be used as a stopway
What happens with 4 parallel r/ys
The QDM for 1 pair will be increased
R/y width and no of stripes
18m = 4 23 = 6 30 = 8 45 = 12 60 or more = 16
Width/3.7 or No of stripes x 3.7 gets you a rough answer
Purpose and colour of a transverse stripe
Indicates a displaced t/hld
Solid white line before the piano keys
Aiming point distances
2 conspicuous white stripes
Less than 800m = 150m
800 up to but not inc 1200 = 250
1200 up to but not inc 2400 = 300
2400 or more = 400
Touchdown zone markings spacing
Pairs of pairs - start at 150m from the t/hld and spaced 150m apart
Code 4 r/ys (1800m+) = 6 pairs
R/y side stripe markings are provided when
Between the t/hld and paired r/y where there is a lack of contrast
Non load bearing t/y markings
Designated by side stripes
Apron safety lines colour
Conspicuous colour
Contrast with that used for an a/c stand markings (yellow)
Pattern A r/y hold markings
Closest to the r/y
2 solid lines
2 dashed lines
Visual holding point
Must always stop here unless cleared at position B
Pattern B r/y hold markings
Ladder pattern
Indicates the start of the ILS sensitive area
Further from the r/y
Category of the ILS/MLS is on the sign
Intermediate holding posn consists of
A single broken yellow line
Where 2 or more t/y meet
If you have this line on your t/y you do not have priority
Road holding posn are marked in accordance with
Local traffic regulations
Mandatory sign colours
White on a red background
Information signs colours
Black on a yellow background
Number only signs
Refers to r/ys
When shall signs be retro reflective/illuminated
If RVR is 800m or less
Location signs
Yellow lettering on a black background
R/y vacated sign is located
At the end of the ILS sensitive area
T/y are designated by and what should be avoided
Letter followed by a number
I,O and X should be avoided
Markers purpose
Displayed above the ground to indicate an obstacle or boundary where lights are not provided or does not serve the purpose
Boundary markers purpose and separation
Provided at an a/d where the l/d r/y has no r/y
Intervals of not more than 200m
Fixed distance markers indicate, intervals and where is the first marker
Indicates distance to go for r/y longer than 4,000ft
Left side of the r/y
Distances in 1,000 ft
First marker = 1,000ft (300m) from the far end of the t/hld
Parking stand colours
Yellow on black
Or
White on blue
