spaschal on DSK3GDR082PROD with CFR

Federal Aviation Administration, DOT

Section 25.807

high, with corner radii not greater
than eight inches.
(2) Type II. This type is a rectangular
opening of not less than 20 inches wide
by 44 inches high, with corner radii not
greater than seven inches. Type II exits
must be floor-level exits unless located
over the wing, in which case they must
not have a step-up inside the airplane
of more than 10 inches nor a step-down
outside the airplane of more than 17
inches.
(3) Type III. This type is a rectangular opening of not less than 20 inches
wide by 36 inches high with corner
radii not greater than seven inches,
and with a step-up inside the airplane
of not more than 20 inches. If the exit
is located over the wing, the step-down
outside the airplane may not exceed 27
inches.
(4) Type IV. This type is a rectangular opening of not less than 19 inches
wide by 26 inches high, with corner
radii not greater than 6.3 inches, located over the wing, with a step-up inside the airplane of not more than 29
inches and a step-down outside the airplane of not more than 36 inches.
(5) Ventral. This type is an exit from
the passenger compartment through
the pressure shell and the bottom fuselage skin. The dimensions and physical
configuration of this type of exit must
allow at least the same rate of egress
as a Type I exit with the airplane in
the normal ground attitude, with landing gear extended.
(6) Tailcone. This type is an aft exit
from the passenger compartment
through the pressure shell and through
an openable cone of the fuselage aft of
the pressure shell. The means of opening the tailcone must be simple and obvious and must employ a single operation.
(7) Type A. This type is a floor-level
exit with a rectangular opening of not
less than 42 inches wide by 72 inches
high, with corner radii not greater
than seven inches.
(8) Type B. This type is a floor-level
exit with a rectangular opening of not
less than 32 inches wide by 72 inches
high, with corner radii not greater
than six inches.
(9) Type C. This type is a floor-level
exit with a rectangular opening of not
less than 30 inches wide by 48 inches

high, with corner radii not greater
than 10 inches.
(b) Step down distance. Step down distance, as used in this section, means
the actual distance between the bottom of the required opening and a usable foot hold, extending out from the
fuselage, that is large enough to be effective without searching by sight or
feel.
(c) Over-sized exits. Openings larger
than those specified in this section,
whether or not of rectangular shape,
may be used if the specified rectangular opening can be inscribed within
the opening and the base of the inscribed rectangular opening meets the
specified
step-up
and
step-down
heights.
(d) Asymmetry. Exits of an exit pair
need not be diametrically opposite
each other nor of the same size; however, the number of passenger seats
permitted under paragraph (g) of this
section is based on the smaller of the
two exits.
(e) Uniformity. Exits must be distributed as uniformly as practical, taking
into account passenger seat distribution.
(f) Location. (1) Each required passenger emergency exit must be accessible to the passengers and located
where it will afford the most effective
means of passenger evacuation.
(2) If only one floor-level exit per side
is prescribed, and the airplane does not
have a tailcone or ventral emergency
exit, the floor-level exits must be in
the rearward part of the passenger
compartment unless another location
affords a more effective means of passenger evacuation.
(3) If more than one floor-level exit
per side is prescribed, and the airplane
does not have a combination cargo and
passenger configuration, at least one
floor-level exit must be located in each
side near each end of the cabin.
(4) For an airplane that is required to
have more than one passenger emergency exit for each side of the fuselage,
no passenger emergency exit shall be
more than 60 feet from any adjacent
passenger emergency exit on the same
side of the same deck of the fuselage,
as measured parallel to the airplane-s
longitudinal axis between the nearest
exit edges.

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VerDate Sep<11>2014

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