256
14 CFR Ch. I (1–1–14 Edition)
§ 23.787
part of the type design and for seat and
berth installations may be shown by—
(1) Structural analysis, if the struc-
ture conforms to conventional airplane
types for which existing methods of
analysis are known to be reliable;
(2) A combination of structural anal-
ysis and static load tests to limit load;
or
(3) Static load tests to ultimate
loads.
[Amdt. 23–36, 53 FR 30813, Aug. 15, 1988; Amdt.
23–36, 54 FR 50737, Dec. 11, 1989; Amdt. 23–49,
61 FR 5167, Feb. 9, 1996]
§ 23.787
Baggage and cargo compart-
ments.
(a) Each baggage and cargo compart-
ment must:
(1) Be designed for its placarded max-
imum weight of contents and for the
critical load distributions at the appro-
priate maximum load factors cor-
responding to the flight and ground
load conditions of this part.
(2) Have means to prevent the con-
tents of any compartment from becom-
ing a hazard by shifting, and to protect
any controls, wiring, lines, equipment
or accessories whose damage or failure
would affect safe operations.
(3) Have a means to protect occu-
pants from injury by the contents of
any compartment, located aft of the
occupants and separated by structure,
when the ultimate forward inertial
load factor is 9g and assuming the max-
imum allowed baggage or cargo weight
for the compartment.
(b) Designs that provide for baggage
or cargo to be carried in the same com-
partment as passengers must have a
means to protect the occupants from
injury when the baggage or cargo is
subjected to the inertial loads result-
ing from the ultimate static load fac-
tors of § 23.561(b)(3), assuming the max-
imum allowed baggage or cargo weight
for the compartment.
(c) For airplanes that are used only
for the carriage of cargo, the flightcrew
emergency exits must meet the re-
quirements of § 23.807 under any cargo
loading conditions.
[Doc. No. 27806, 61 FR 5167, Feb. 9, 1996]
§ 23.791
Passenger information signs.
For those airplanes in which the
flightcrew members cannot observe the
other occupants’ seats or where the
flightcrew members’ compartment is
separated from the passenger compart-
ment, there must be at least one illu-
minated sign (using either letters or
symbols) notifying all passengers when
seat belts should be fastened. Signs
that notify when seat belts should be
fastened must:
(a) When illuminated, be legible to
each person seated in the passenger
compartment under all probable light-
ing conditions; and
(b) Be installed so that a flightcrew
member can, when seated at the
flightcrew member’s station, turn the
illumination on and off.
[Doc. No. 27806, 61 FR 5167, Feb. 9, 1996]
§ 23.803
Emergency evacuation.
(a) For commuter category airplanes,
an evacuation demonstration must be
conducted utilizing the maximum
number of occupants for which certifi-
cation is desired. The demonstration
must be conducted under simulated
night conditions using only the emer-
gency exits on the most critical side of
the airplane. The participants must be
representative of average airline pas-
sengers with no prior practice or re-
hearsal for the demonstration. Evacu-
ation must be completed within 90 sec-
onds.
(b) In addition, when certification to
the emergency exit provisions of
§ 23.807(d)(4) is requested, only the
emergency lighting system required by
§ 23.812 may be used to provide cabin in-
terior illumination during the evacu-
ation demonstration required in para-
graph (a) of this section.
[Amdt. 23–34, 52 FR 1831, Jan. 15, 1987, as
amended by Amdt. 23–46, 59 FR 25773, May 17,
1994]
§ 23.805
Flightcrew emergency exits.
For airplanes where the proximity of
the passenger emergency exits to the
flightcrew area does not offer a conven-
ient and readily accessible means of
evacuation for the flightcrew, the fol-
lowing apply:
(a) There must be either one emer-
gency exit on each side of the airplane,
or a top hatch emergency exit, in the
flightcrew area;
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