259
Federal Aviation Administration, DOT
§ 23.812
(4) The location of the operating han-
dle and instructions for opening each
emergency exit from inside the air-
plane must be shown by marking that
is readable from a distance of 30 inches;
(5) Each passenger entry door oper-
ating handle must—
(i) Be self-illuminated with an initial
brightness of at least 160 micro-
lamberts; or
(ii) Be conspicuously located and well
illuminated by the emergency lighting
even in conditions of occupant crowd-
ing at the door;
(6) Each passenger entry door with a
locking mechanism that is released by
rotary motion of the handle must be
marked—
(i) With a red arrow, with a shaft of
at least three-fourths of an inch wide
and a head twice the width of the shaft,
extending along at least 70 degrees of
arc at a radius approximately equal to
three-fourths of the handle length;
(ii) So that the center line of the exit
handle is within
±
one inch of the pro-
jected point of the arrow when the han-
dle has reached full travel and has re-
leased the locking mechanism;
(iii) With the word ‘‘open’’ in red let-
ters, one inch high, placed horizontally
near the head of the arrow; and
(7) In addition to the requirements of
paragraph (a) of this section, the exter-
nal marking of each emergency exit
must—
(i) Include a 2-inch colorband out-
lining the exit; and
(ii) Have a color contrast that is
readily distinguishable from the sur-
rounding fuselage surface. The contrast
must be such that if the reflectance of
the darker color is 15 percent or less,
the reflectance of the lighter color
must be at least 45 percent. ‘‘Reflec-
tance’’ is the ratio of the luminous flux
reflected by a body to the luminous
flux it receives. When the reflectance
of the darker color is greater than 15
percent, at least a 30 percent difference
between its reflectance and the reflec-
tance of the lighter color must be pro-
vided.
[Amdt. 23–36, 53 FR 30814, Aug. 15, 1988; 53 FR
34194, Sept. 2, 1988, as amended by Amdt. 23–
46, 59 FR 25773, May 17, 1994]
§ 23.812
Emergency lighting.
When certification to the emergency
exit provisions of § 23.807(d)(4) is re-
quested, the following apply:
(a) An emergency lighting system,
independent of the main cabin lighting
system, must be installed. However,
the source of general cabin illumina-
tion may be common to both the emer-
gency and main lighting systems if the
power supply to the emergency light-
ing system is independent of the power
supply to the main lighting system.
(b) There must be a crew warning
light that illuminates in the cockpit
when power is on in the airplane and
the emergency lighting control device
is not armed.
(c) The emergency lights must be op-
erable manually from the flightcrew
station and be provided with automatic
activation. The cockpit control device
must have ‘‘on,’’ ‘‘off,’’ and ‘‘armed’’
positions so that, when armed in the
cockpit, the lights will operate by
automatic activation.
(d) There must be a means to safe-
guard against inadvertent operation of
the cockpit control device from the
‘‘armed’’ or ‘‘on’’ positions.
(e) The cockpit control device must
have provisions to allow the emergency
lighting system to be armed or acti-
vated at any time that it may be need-
ed.
(f) When armed, the emergency light-
ing system must activate and remain
lighted when—
(1) The normal electrical power of
the airplane is lost; or
(2) The airplane is subjected to an
impact that results in a deceleration in
excess of 2g and a velocity change in
excess of 3.5 feet-per-second, acting
along the longitudinal axis of the air-
plane; or
(3) Any other emergency condition
exists where automatic activation of
the emergency lighting is necessary to
aid with occupant evacuation.
(g) The emergency lighting system
must be capable of being turned off and
reset by the flightcrew after automatic
activation.
(h) The emergency lighting system
must provide internal lighting, includ-
ing—
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