367
Federal Aviation Administration, DOT
Pt. 125, App. A
extending along at least 70 degrees of arc at
a radius approximately equal to
3
⁄
4
of the
handle length; and
(ii) The word ‘‘open’’ in red letters 1 inch
high placed horizontally near the head of the
arrow.
(2) For a passenger-carrying airplane for
which the application for the type certificate
was filed on or after May 1, 1972, the location
of each passenger emergency exit operating
handle and instructions for opening the exit
must be shown in accordance with the re-
quirements under which the airplane was
type certificated. On these airplanes, no op-
erating handle or operating handle cover
may continue to be used if its luminescence
(brightness) decreases to below 100 micro-
lamberts.
(f)
Emergency exit access.
Access to emer-
gency exits must be provided as follows for
each passenger-carrying airplane:
(1) Each passageway between individual
passenger areas, or leading to a Type I or
Type II emergency exit, must be unob-
structed and at least 20 inches wide.
(2) There must be enough space next to
each Type I or Type II emergency exit to
allow a crewmember to assist in the evacu-
ation of passengers without reducing the un-
obstructed width of the passageway below
that required in paragraph (f)(1) of this sec-
tion. However, the Administrator may au-
thorize deviation from this requirement for
an airplane certificated under the provisions
of part 4b of the Civil Air Regulations in ef-
fect before December 20, 1951, if the Adminis-
trator finds that special circumstances exist
that provide an equivalent level of safety.
(3) There must be access from the main
aisle to each Type III and Type IV exit. The
access from the aisle to these exits must not
be obstructed by seats, berths, or other pro-
trusions in a manner that would reduce the
effectiveness of the exit. In addition—
(i) For an airplane for which the applica-
tion for the type certificate was filed prior to
May 1, 1972, the access must meet the re-
quirements of § 25.813(c) of this chapter in ef-
fect on April 30, 1972; and
(ii) For an airplane for which the applica-
tion for the type certificate was filed on or
after May 1, 1972, the access must meet the
emergency exit access requirements under
which the airplane was certificated.
(4) If it is necessary to pass through a pas-
sageway between passenger compartments to
reach any required emergency exit from any
seat in the passenger cabin, the passageway
must not be obstructed. However, curtains
may be used if they allow free entry through
the passageway.
(5) No door may be installed in any parti-
tion between passenger compartments.
(6) If it is necessary to pass through a door-
way separating the passenger cabin from
other areas to reach any required emergency
exit from any passenger seat, the door must
have a means to latch it in open position,
and the door must be latched open during
each takeoff and landing. The latching
means must be able to withstand the loads
imposed upon it when the door is subjected
to the ultimate interia forces, relative to the
surrounding structure, listed in § 25.561(b) of
this chapter.
(g)
Exterior exit markings.
Each passenger
emergency exit and the means of opening
that exit from the outside must be marked
on the outside of the airplane. There must be
a 2-inch colored band outlining each pas-
senger emergency exit on the side of the fu-
selage. Each outside marking, including the
band, must be readily distinguishable from
the surrounding fuselage area by contrast in
color. The markings must comply with the
following:
(1) If the reflectance of the darker color is
15 percent or less, the reflectance of the
lighter color must be at least 45 percent.
‘‘Reflectance’’ is the ratio of the luminous
flux reflected by a body to the luminous flux
it receives.
(2) If the reflectance of the darker color is
greater than 15 percent, at least a 30 percent
difference between its reflectance and the re-
flectance of the lighter color must be pro-
vided.
(3) Exits that are not in the side of the fu-
selage must have the external means of
opening and applicable instructions marked
conspicuously in red or, if red is incon-
spicuous against the background color, in
bright chrome yellow and, when the opening
means for such an exit is located on only one
side of the fuselage, a conspicuous marking
to that effect must be provided on the other
side.
(h)
Exterior emergency lighting and escape
route.
(1) Each passenger-carrying airplane
must be equipped with exterior lighting that
meets the following requirements:
(i) For an airplane for which the applica-
tion for the type certificate was filed prior to
May 1, 1972, the requirements of § 25.812(f)
and (g) of this chapter in effect on April 30,
1972.
(ii) For an airplane for which the applica-
tion for the type certificate was filed on or
after May 1, 1972, the exterior emergency
lighting requirements under which the air-
plane was type certificated.
(2) Each passenger-carrying airplane must
be equipped with a slip-resistant escape
route that meets the following requirements:
(i) For an airplane for which the applica-
tion for the type certificate was filed prior to
May 1, 1972, the requirements of § 25.803(e) of
this chapter in effect on April 30, 1972.
(ii) For an airplane for which the applica-
tion for the type certificate was filed on or
after May 1, 1972, the slip-resistant escape
route requirements under which the airplane
was type certificated.
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