203 

Federal Aviation Administration, DOT 

Pt. 25, SFAR No. 109 

(c) For the vertical test, conducted in ac-

cordance with the conditions specified in 
§ 25.562(b)(1), Hybrid II ATDs or equivalent 
must be used in all seat positions. 

5. 

Direct View. 

In lieu of the requirements 

of § 25.785(h)(2), to the extent practical with-
out compromising proximity to a required 
floor level emergency exit, the majority of 
installed flight attendant seats must be lo-
cated to face the cabin area for which the 
flight attendant is responsible. 

6. 

Passenger Information Signs. 

Compliance 

with § 25.791 is required except that for 
§ 25.791(a), when smoking is to be prohibited, 
notification to the passengers may be pro-
vided by a single placard so stating, to be 
conspicuously located inside the passenger 
compartment, easily visible to all persons 
entering the cabin in the immediate vicinity 
of each passenger entry door. 

7. 

Distance Between Exits. 

For an airplane 

that is required to comply with § 25.807(f)(4), 
in effect as of July 24, 1989, which has more 
than one passenger emergency exit on each 
side of the fuselage, no passenger emergency 
exit may be more than 60 feet from any adja-
cent passenger emergency exit on the same 
side of the same deck of the fuselage, as 
measured parallel to the airplane’s longitu-
dinal axis between the nearest exit edges, 
unless the following conditions are met: 

(a) Each passenger seat must be located 

within 30 feet from the nearest exit on each 
side of the fuselage, as measured parallel to 
the airplane’s longitudinal axis, between the 
nearest exit edge and the front of the seat 
bottom cushion. 

(b) The number of passenger seats located 

between two adjacent pairs of emergency 
exits (commonly referred to as a passenger 
zone) or between a pair of exits and a bulk-
head or a compartment door (commonly re-
ferred to as a ‘‘dead-end zone’’), may not ex-
ceed the following: 

(1) For zones between two pairs of exits, 50 

percent of the combined rated capacity of 
the two pairs of emergency exits. 

(2) For zones between one pair of exits and 

a bulkhead, 40 percent of the rated capacity 
of the pair of emergency exits. 

(c) The total number of passenger seats in 

the airplane may not exceed 33 percent of the 
maximum seating capacity for the airplane 
model using the exit ratings listed in 
§ 25.807(g) for the original certified exits or 
the maximum allowable after modification 
when exits are deactivated, whichever is less. 

(d) A distance of more than 60 feet between 

adjacent passenger emergency exits on the 
same side of the same deck of the fuselage, 
as measured parallel to the airplane’s longi-
tudinal axis between the nearest exit edges, 
is allowed only once on each side of the fuse-
lage. 

8. 

Emergency Exit Signs. 

In lieu of the re-

quirements of § 25.811(d)(1) and (2) a single 
sign at each exit may be installed provided: 

(a) The sign can be read from the aisle 

while directly facing the exit, and 

(b) The sign can be read from the aisle ad-

jacent to the passenger seat that is farthest 
from the exit and that does not have an in-
tervening bulkhead/divider or exit. 

9. 

Emergency Lighting. 

(a) 

Exit Signs. 

In lieu of the requirements of 

§ 25.812(b)(1), for airplanes that have a pas-
senger seating configuration, excluding pilot 
seats, of 19 seats or less, the emergency exit 
signs required by § 25.811(d)(1), (2), and (3) 
must have red letters at least 1-inch high on 
a white background at least 2 inches high. 
These signs may be internally electrically il-
luminated, or self illuminated by other than 
electrical means, with an initial brightness 
of at least 160 microlamberts. The color may 
be reversed in the case of a sign that is self- 
illuminated by other than electrical means. 

(b) 

Floor Proximity Escape Path Marking. 

In 

lieu of the requirements of § 25.812(e)(1), for 
cabin seating compartments that do not 
have the main cabin aisle entering and 
exiting the compartment, the following are 
applicable: 

(1) After a passenger leaves any passenger 

seat in the compartment, he/she must be 
able to exit the compartment to the main 
cabin aisle using only markings and visual 
features not more that 4 feet above the cabin 
floor, and 

(2) Proceed to the exits using the marking 

system necessary to accomplish the actions 
in § 25.812(e)(1) and (e)(2). 

(c) 

Transverse Separation of the Fuselage. 

In 

the event of a transverse separation of the 
fuselage, compliance must be shown with 
§ 25.812(l) except as follows: 

(1) For each airplane type originally type 

certificated with a maximum passenger seat-
ing capacity of 9 or less, not more than 50 
percent of all electrically illuminated emer-
gency lights required by § 25.812 may be ren-
dered inoperative in addition to the lights 
that are directly damaged by the separation. 

(2) For each airplane type originally type 

certificated with a maximum passenger seat-
ing capacity of 10 to 19, not more than 33 per-
cent of all electrically illuminated emer-
gency lights required by § 25.812 may be ren-
dered inoperative in addition to the lights 
that are directly damaged by the separation. 

10. 

Interior doors. 

In lieu of the require-

ments of § 25.813(e), interior doors may be in-
stalled between passenger seats and exits, 
provided the following requirements are met. 

(a) Each door between any passenger seat, 

occupiable for taxi, takeoff, and landing, and 
any emergency exit must have a means to 
signal to the flightcrew, at the flightdeck, 
that the door is in the open position for taxi, 
takeoff and landing. 

(b) Appropriate procedures/limitations 

must be established to ensure that any such 
door is in the open configuration for takeoff 
and landing. 

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