67
Federal Aviation Administration, DOT
Pt. 60, App. A
4.b.1.
.............
Continuous collimated
visual field-of-view.
Continuous collimated field-
of-view providing at least
45
°
horizontal and 30
°
vertical field-of-view for
each pilot seat. Both pilot
seat visual systems must
be operable simulta-
neously.
N/A
...............................
Required as part of MQTG but not re-
quired as part of continuing evalua-
tions.
X
X
A vertical field-of-view
of 30
°
may be insuf-
ficient to meet visual
ground segment re-
quirements.
4.b.2.
.............
(Reserved)
4.b.3.
.............
Continuous, collimated,
field-of-view.
Continuous field-of-view of
at least 176
°
horizontally
and 36
°
vertically.
N/A
...............................
An SOC is required and must explain
the geometry of the installation. Hori-
zontal field-of-view must be at least
176
°
(including not less than 88
°
either
side of the center line of the design
eye point). Additional horizontal field-
of-view capability may be added at the
sponsor’s discretion provided the min-
imum field-of-view is retained. Vertical
field-of-view must be at least 36
°
from
each pilot’s eye point. Required as
part of MQTG but not required as part
of continuing qualification evaluations.
X
X
The horizontal field-of-
view is traditionally
described as a 180
°
field-of-view. How-
ever, the field-of-
view is technically
no less than 176
°
.
Field-of-view should
be measured using
a visual test pattern
filling the entire vis-
ual scene (all chan-
nels) with a matrix of
black and white 5
°
squares. The in-
stalled alignment
should be addressed
in the SOC.
4.c.
................
System geometry.
..................
5
°
even angular spacing
within
±
1
°
as measured
from either pilot eye point
and within 1.5
°
for adja-
cent squares.
N/A
...............................
The angular spacing of any chosen 5
°
square and the relative spacing of ad-
jacent squares must be within the stat-
ed tolerances.
X
X
X
X
The purpose of this
test is to evaluate
local linearity of the
displayed image at
either pilot eye point.
System geometry
should be measured
using a visual test
pattern filling the en-
tire visual scene (all
channels) with a ma-
trix of black and
white 5
°
squares
with light points at
the intersections.
4.d.
................
Surface contrast ratio.
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