The aiming point marking serves as a visual aiming point for a landing aircraft. These two rectangular markings consist of a broad white stripe located on each side of the runway centerline at a distance from the threshold specified in the table below. Where an aiming point marking is provided:

It is white and located at a specific distance from the threshold as per the table below.
Takes precedence over touchdown zone markings, therefore, a pair of touchdown zone markings is omitted if it would otherwise fall within 50 metres of the aiming point marking.

Declared Landing Distance Available	Location of Aiming Point Marking Distance From Threshold
less than 800 m	150 m
800 m up to but not including 1,200 m	250 m
1,200 m up to but not including 2,400 m	300 m
2,400 m or more	400 m

Definitions

Touchdown Zone: The first 3,000 ft of the runway or the first third of the runway, whichever is less, measured from the threshold in the direction of landing.

References

AIM AGA 5.4 Runway Markings

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