Federal Aviation Administration, DOT

Section 135.178

(3) For airplanes type certificated
after January 1, 1958, include floor
proximity emergency escape path
marking which meets the requirements
of Section 25.812(e) of this chapter in effect on
November 26, 1984.
(d) Emergency light operation. Except
for lights forming part of emergency
lighting subsystems provided in compliance with Section 25.812(h) of this chapter
(as prescribed in paragraph (h) of this
section) that serve no more than one
assist means, are independent of the
airplane-s main emergency lighting
systems, and are automatically activated when the assist means is deployed, each light required by paragraphs (c) and (h) of this section must:
(1) Be operable manually both from
the flightcrew station and from a point
in the passenger compartment that is
readily accessible to a normal flight
attendant seat;
(2) Have a means to prevent inadvertent operation of the manual controls;
(3) When armed or turned on at either station, remain lighted or become
lighted upon interruption of the airplane-s normal electric power;
(4) Be armed or turned on during taxiing, takeoff, and landing. In showing
compliance with this paragraph, a
transverse vertical separation of the
fuselage need not be considered;
(5) Provide the required level of illumination for at least 10 minutes at the
critical ambient conditions after emergency landing; and
(6) Have a cockpit control device that
has an  - on, -   - off, -  and  - armed -  position.
(e) Emergency exit operating handles.
(1) For a passenger-carrying airplane
for which the application for the type
certificate was filed prior to May 1,
1972, the location of each passenger
emergency exit operating handle, and
instructions for opening the exit, must
be shown by a marking on or near the
exit that is readable from a distance of
30 inches. In addition, for each Type I
and Type II emergency exit with a
locking mechanism released by rotary
motion of the handle, the instructions
for opening must be shown by - 
(i) A red arrow with a shaft at least
three-fourths inch wide and a head
twice the width of the shaft, extending

along at least 70Section of arc at a radius approximately equal to three-fourths 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 requirements under which the airplane
was type certificated. On these airplanes, no operating handle or operating handle cover may continue to be
used if its luminescence (brightness)
decreases to below 100 microlamberts.
(f) Emergency exit access. Access to
emergency 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 unobstructed 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 evacuation of passengers without
reducing the unobstructed width of the
passageway below that required in
paragraph (f)(1) of this section; however, the Administrator may authorize
deviation from this requirement for an
airplane certificated under the provisions of part 4b of the Civil Air Regulations in effect before December 20, 1951,
if he 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 protrusions in a
manner that would reduce the effectiveness of the exit. In addition, for a
transport category airplane type certificated after January 1, 1958, there
must be placards installed in accordance with Section 25.813(c)(3) of this chapter
for each Type III exit after December 3,
1992.

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