289 

Federal Aviation Administration, DOT 

§ 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 rectan-

gular 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 rectan-

gular opening of not less than 19 inches 
wide by 26 inches high, with corner 
radii not greater than 6.3 inches, lo-
cated over the wing, with a step-up in-
side the airplane of not more than 29 
inches and a step-down outside the air-
plane of not more than 36 inches. 

(5) 

Ventral. 

This type is an exit from 

the passenger compartment through 
the pressure shell and the bottom fuse-
lage 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 land-
ing 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 open-
ing the tailcone must be simple and ob-
vious and must employ a single oper-
ation. 

(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 dis-

tance, as used in this section, means 
the actual distance between the bot-
tom of the required opening and a usa-
ble foot hold, extending out from the 
fuselage, that is large enough to be ef-
fective 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 rectan-
gular opening can be inscribed within 
the opening and the base of the in-
scribed 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; how-
ever, 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 distrib-

uted as uniformly as practical, taking 
into account passenger seat distribu-
tion. 

(f) 

Location. 

(1) Each required pas-

senger emergency exit must be acces-
sible 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 pas-
senger 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 emer-
gency 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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