Appendix A to Part 125 - Additional Emergency Equipment
14:3.0.1.1.8.15.3.1.25 : Appendix A
Appendix A to Part 125 - Additional Emergency Equipment
(a) Means for emergency evacuation. Each
passenger-carrying landplane emergency exit (other than
over-the-wing) that is more that 6 feet from the ground with the
airplane on the ground and the landing gear extended must have an
approved means to assist the occupants in descending to the ground.
The assisting means for a floor level emergency exit must meet the
requirements of § 25.809(f)(1) of this chapter in effect on April
30, 1972, except that, for any airplane for which the application
for the type certificate was filed after that date, it must meet
the requirements under which the airplane was type certificated. An
assisting means that deploys automatically must be armed during
taxiing, takeoffs, and landings. However, if the Administrator
finds that the design of the exit makes compliance impractical, the
Administrator may grant a deviation from the requirement of
automatic deployment if the assisting means automatically erects
upon deployment and, with respect to required emergency exits, if
an emergency evacuation demonstration is conducted in accordance
with § 125.189. This paragraph does not apply to the rear window
emergency exit of DC-3 airplanes operated with less than 36
occupants, including crewmembers, and less than five exits
authorized for passenger use.
(b) Interior emergency exit marking. The following must
be complied with for each passenger-carrying airplane:
(1) Each passenger emergency exit, its means of access, and
means of opening must be conspicuously marked. The identity and
location of each passenger emergency exit must be recognizable from
a distance equal to the width of the cabin. The location of each
passenger emergency exit must be indicated by a sign visible to
occupants approaching along the main passenger aisle. There must be
a locating sign -
(i) Above the aisle near each over-the-wing passenger emergency
exit, or at another ceiling location if it is more practical
because of low headroom;
(ii) Next to each floor level passenger emergency exit, except
that one sign may serve two such exits if they both can be seen
readily from that sign; and
(iii) On each bulkhead or divider that prevents fore and aft
vision along the passenger cabin, to indicate emergency exits
beyond and obscured by it, except that if this is not possible the
sign may be placed at another appropriate location.
(2) Each passenger emergency exit marking and each locating sign
must meet the following:
(i) For an airplane for which the application for the type
certificate was filed prior to May 1, 1972, each passenger
emergency exit marking and each locating sign must be manufactured
to meet the requirements of § 25.812(b) of this chapter in effect
on April 30, 1972. On these airplanes, no sign may continue to be
used if its luminescence (brightness) decreases to below 100
microlamberts. The colors may be reversed if it increases the
emergency illumination of the passenger compartment. However, the
Administrator may authorize deviation from the 2-inch background
requirements if the Administrator finds that special circumstances
exist that make compliance impractical and that the proposed
deviation provides an equivalent level of safety.
(ii) For an airplane for which the application for the type
certificate was filed on or after May 1, 1972, each passenger
emergency exit marking and each locating sign must be manufactured
to meet the interior emergency exit marking requirements under
which the airplane was type certificated. On these airplanes, no
sign may continue to be used if its luminescence (brightness)
decreases to below 250 microlamberts.
(c) Lighting for interior emergency exit markings. Each
passenger-carrying airplane must have an emergency lighting system,
independent of the main lighting system. However, sources of
general cabin illumination may be common to both the emergency and
the main lighting systems if the power supply to the emergency
lighting system is independent of the power supply to the main
lighting system. The emergency lighting system must -
(1) Illuminate each passenger exit marking and locating sign;
and
(2) Provide enough general lighting in the passenger cabin so
that the average illumination, when measured at 40-inch intervals
at seat armrest height, on the centerline of the main passenger
aisle, is at least 0.05 foot-candles.
(d) Emergency light operation. Except for lights forming
part of emergency lighting subsystems provided in compliance with §
25.812(g) 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) must comply with the
following:
(1) Each light must be operable manually and must operate
automatically from the independent lighting system -
(i) In a crash landing; or
(ii) Whenever the airplane's normal electric power to the light
is interrupted.
(2) Each light must -
(i) Be operable manually from the flightcrew station and from a
point in the passenger compartment that is readily accessible to a
normal flight attendant seat;
(ii) Have a means to prevent inadvertent operation of the manual
controls; and
(iii) When armed or turned on at either station, remain lighted
or become lighted upon interruption of the airplane's normal
electric power.
Each light must 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.
(3) Each light must provide the required level of illumination
for at least 10 minutes at the critical ambient conditions after
emergency landing.
(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 3/4 inch wide and a head
twice the width of the shaft, extending along at least 70 degrees
of arc at a radius approximately equal to 3/4 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 the Administrator 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 -
(i) For an airplane for which the application for the type
certificate was filed prior to May 1, 1972, the access must meet
the requirements of § 25.813(c) of this chapter in effect on April
30, 1972; and
(ii) For an airplane for which the application for the type
certificate was filed on or after May 1, 1972, the access must meet
the emergency exit access requirements under which the airplane was
certificated.
(4) If it is necessary to pass through a passageway between
passenger compartments to reach any required emergency exit from
any seat in the passenger cabin, the passageway must not be
obstructed. However, curtains may be used if they allow free entry
through the passageway.
(5) No door may be installed in any partition between passenger
compartments.
(6) If it is necessary to pass through a doorway separating the
passenger cabin from other areas to reach any required emergency
exit from any passenger seat, the door must have a means to latch
it in open position, and the door must be latched open during each
takeoff and landing. The latching means must be able to withstand
the loads imposed upon it when the door is subjected to the
ultimate interia forces, relative to the surrounding structure,
listed in § 25.561(b) of this chapter.
(g) Exterior exit markings. Each passenger emergency exit
and the means of opening that exit from the outside must be marked
on the outside of the airplane. There must be a 2-inch colored band
outlining each passenger emergency exit on the side of the
fuselage. Each outside marking, including the band, must be readily
distinguishable from the surrounding fuselage area by contrast in
color. The markings must comply with the following:
(1) If the reflectance of the darker color is 15 percent or
less, the reflectance of the lighter color must be at least 45
percent. “Reflectance” is the ratio of the luminous flux reflected
by a body to the luminous flux it receives.
(2) If the reflectance of the darker color is greater than 15
percent, at least a 30 percent difference between its reflectance
and the reflectance of the lighter color must be provided.
(3) Exits that are not in the side of the fuselage must have the
external means of opening and applicable instructions marked
conspicuously in red or, if red is inconspicuous against the
background color, in bright chrome yellow and, when the opening
means for such an exit is located on only one side of the fuselage,
a conspicuous marking to that effect must be provided on the other
side.
(h) Exterior emergency lighting and escape route. (1)
Each passenger-carrying airplane must be equipped with exterior
lighting that meets the following requirements:
(i) For an airplane for which the application for the type
certificate was filed prior to May 1, 1972, the requirements of §
25.812(f) and (g) of this chapter in effect on April 30, 1972.
(ii) For an airplane for which the application for the type
certificate was filed on or after May 1, 1972, the exterior
emergency lighting requirements under which the airplane was type
certificated.
(2) Each passenger-carrying airplane must be equipped with a
slip-resistant escape route that meets the following
requirements:
(i) For an airplane for which the application for the type
certificate was filed prior to May 1, 1972, the requirements of §
25.803(e) of this chapter in effect on April 30, 1972.
(ii) For an airplane for which the application for the type
certificate was filed on or after May 1, 1972, the slip-resistant
escape route requirements under which the airplane was type
certificated.
(i) Floor level exits. Each floor level door or exit in
the side of the fuselage (other than those leading into a cargo or
baggage compartment that is not accessible from the passenger
cabin) that is 44 or more inches high and 20 or more inches wide,
but not wider than 46 inches, each passenger ventral exit (except
the ventral exits on M-404 and CV-240 airplanes) and each tail cone
exit must meet the requirements of this section for floor level
emergency exits. However, the Administrator may grant a deviation
from this paragraph if the Administrator finds that circumstances
make full compliance impractical and that an acceptable level of
safety has been achieved.
(j) Additional emergency exits. Approved emergency exits
in the passenger compartments that are in excess of the minimum
number of required emergency exits must meet all of the applicable
provisions of this section except paragraph (f), (1), (2), and (3)
and must be readily accessible.
(k) On each large passenger-carrying turbojet-powered airplane,
each ventral exit and tailcone exit must be -
(1) Designed and constructed so that it cannot be opened during
flight; and
(2) Marked with a placard readable from a distance of 30 inches
and installed at a conspicuous location near the means of opening
the exit, stating that the exit has been designed and constructed
so that it cannot be opened during flight.