kpayne on VMOFRWIN702 with $$_JOB

VerDate Sep<11>2014
Not greater than two (2) arc
minutes.

N/A .........................................

An SOC is required and must
include the appropriate calculations and an explanation of those calculations. Level B requires surface resolution not greater
than three (3) arc minutes.

X

X

When the eye is positioned
on a 3Section glide slope at the
slant range distances indicated with white runway
markings on a black runway surface, the eye will
subtend two (2) arc minutes: (1) A slant range of
6,876 ft with stripes 150 ft
long and 16 ft wide,
spaced 4 ft apart. (2) For
Configuration A, a slant
range of 5,157 feet with
stripes 150 ft long and 12 ft
wide, spaced 3 ft apart. (3)
For Configuration B, a slant
range of 9,884 feet, with
stripes 150 ft long and 5.75
ft wide, spaced 5.75 ft
apart.

4.f. ..............

Light point size ......................

Not greater than five (5) arc
minutes.

N/A .........................................

An SOC is required and must
include the relevant calculations and an explanation of those calculations.

X

X

Light point size may be
measured using a test pattern consisting of a centrally located single row of
light points reduced in
length until modulation is
just discernible in each visual channel. A row of 48
lights will form a 4Section angle
or less.

4.g. .............

Light point contrast ratio.

Jkt 247047

Surface resolution.

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4.g.1. ..........

Not less than 10:1 .................

N/A .........................................

An SOC is required and must
include the relevant calculations.

X

Pt. 60, App. C

A 1Section spot photometer may be
used to measure a square
of at least 1Section filled with light
points (where light point
modulation is just discernible) and compare the results to the measured adjacent background. During
contrast ratio testing, simulator aft-cab and flight deck
ambient light levels should
be zero.

Federal Aviation Administration, DOT

16:30 Jun 25, 2019

4.e. .............