299
Federal Aviation Administration, DOT
§ 25.819
(3) For each Type III exit, regardless
of the passenger capacity of the air-
plane in which it is installed, there
must be placards that—
(i) Are readable by all persons seated
adjacent to and facing a passageway to
the exit;
(ii) Accurately state or illustrate the
proper method of opening the exit, in-
cluding the use of handholds; and
(iii) If the exit is a removable hatch,
state the weight of the hatch and indi-
cate an appropriate location to place
the hatch after removal.
(d) If it is necessary to pass through
a passageway between passenger com-
partments to reach any required emer-
gency exit from any seat in the pas-
senger cabin, the passageway must be
unobstructed. However, curtains may
be used if they allow free entry
through the passageway.
(e) No door may be installed between
any passenger seat that is occupiable
for takeoff and landing and any pas-
senger emergency exit, such that the
door crosses any egress path (including
aisles, crossaisles and passageways).
(f) If it is necessary to pass through a
doorway separating any crewmember
seat (except those seats on the
flightdeck), occupiable for takeoff and
landing, from any emergency exit, the
door must have a means to latch it in
the open position. The latching means
must be able to withstand the loads
imposed upon it when the door is sub-
jected to the ultimate inertia forces,
relative to the surrounding structure,
listed in § 25.561(b).
[Amdt. 25–1, 30 FR 3204, Mar. 9, 1965, as
amended by Amdt. 25–15, 32 FR 13265, Sept.
20, 1967; Amdt. 25–32, 37 FR 3971, Feb. 24, 1972;
Amdt. 25–46, 43 FR 50597, Oct. 30, 1978; Amdt.
25–72, 55 FR 29783, July 20, 1990; Amdt. 25–76,
57 FR 19244, May 4, 1992; Amdt. 25–76, 57 FR
29120, June 30, 1992; Amdt. 25–88, 61 FR 57958,
Nov. 8, 1996; Amdt. 25–116, 69 FR 62788, Oct.
27, 2004; Amdt. 25–128, 74 FR 25645, May 29,
2009]
§ 25.815
Width of aisle.
The passenger aisle width at any
point between seats must equal or ex-
ceed the values in the following table:
Passenger seating capacity
Minimum passenger
aisle width (inches)
Less than
25 in. from
floor
25 in. and
more from
floor
10 or less .......................................
1
12 15
11 through 19 ................................
12
20
20 or more .....................................
15
20
1
A narrower width not less than 9 inches may be approved
when substantiated by tests found necessary by the
Administrator.
[Amdt. 25–15, 32 FR 13265, Sept. 20, 1967, as
amended by Amdt. 25–38, 41 FR 55466, Dec. 20,
1976]
§ 25.817
Maximum number of seats
abreast.
On airplanes having only one pas-
senger aisle, no more than three seats
abreast may be placed on each side of
the aisle in any one row.
[Amdt. 25–15, 32 FR 13265, Sept. 20, 1967]
§ 25.819
Lower deck service compart-
ments (including galleys).
For airplanes with a service compart-
ment located below the main deck,
which may be occupied during taxi or
flight but not during takeoff or land-
ing, the following apply:
(a) There must be at least two emer-
gency evacuation routes, one at each
end of each lower deck service com-
partment or two having sufficient sepa-
ration within each compartment,
which could be used by each occupant
of the lower deck service compartment
to rapidly evacuate to the main deck
under normal and emergency lighting
conditions. The routes must provide for
the evacuation of incapacitated per-
sons, with assistance. The use of the
evacuation routes may not be depend-
ent on any powered device. The routes
must be designed to minimize the pos-
sibility of blockage which might result
from fire, mechanical or structural
failure, or persons standing on top of or
against the escape routes. In the event
the airplane’s main power system or
compartment main lighting system
should fail, emergency illumination for
each lower deck service compartment
must be automatically provided.
(b) There must be a means for two-
way voice communication between the
flight deck and each lower deck service
compartment, which remains available
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