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14 CFR Ch. I (1–1–24 Edition)
§ 25.789
§ 25.789
Retention of items of mass in
passenger and crew compartments
and galleys.
(a) Means must be provided to pre-
vent each item of mass (that is part of
the airplane type design) in a passenger
or crew compartment or galley from
becoming a hazard by shifting under
the appropriate maximum load factors
corresponding to the specified flight
and ground load conditions, and to the
emergency landing conditions of
§ 25.561(b).
(b) Each interphone restraint system
must be designed so that when sub-
jected to the load factors specified in
§ 25.561(b)(3), the interphone will re-
main in its stowed position.
[Amdt. 25–32, 37 FR 3969, Feb. 24, 1972, as
amended by Amdt. 25–46, 43 FR 50596, Oct. 30,
1978]
§ 25.791
Passenger information signs
and placards.
(a) If smoking is to be prohibited,
there must be at least one placard so
stating that is legible to each person
seated in the cabin. If smoking is to be
allowed, and if the crew compartment
is separated from the passenger com-
partment, there must be at least one
sign notifying when smoking is prohib-
ited. Signs which notify when smoking
is prohibited must be operable by a
member of the flightcrew and, when il-
luminated, must be legible under all
probable conditions of cabin illumina-
tion to each person seated in the cabin.
(b) Signs that notify when seat belts
should be fastened and that are in-
stalled to comply with the operating
rules of this chapter must be operable
by a member of the flightcrew and,
when illuminated, must be legible
under all probable conditions of cabin
illumination to each person seated in
the cabin.
(c) A placard must be located on or
adjacent to the door of each receptacle
used for the disposal of flammable
waste materials to indicate that use of
the receptacle for disposal of ciga-
rettes, etc., is prohibited.
(d) Lavatories must have ‘‘No Smok-
ing’’ or ‘‘No Smoking in Lavatory’’
placards conspicuously located on or
adjacent to each side of the entry door.
(e) Symbols that clearly express the
intent of the sign or placard may be
used in lieu of letters.
[Amdt. 25–72, 55 FR 29780, July 20, 1990]
§ 25.793
Floor surfaces.
The floor surface of all areas which
are likely to become wet in service
must have slip resistant properties.
[Amdt. 25–51, 45 FR 7755, Feb. 4, 1980]
§ 25.795
Security considerations.
(a)
Protection of flightcrew compart-
ment. If a flightdeck door is required by
operating rules:
(1) The bulkhead, door, and any other
accessible boundary separating the
flightcrew compartment from occupied
areas must be designed to resist forc-
ible intrusion by unauthorized persons
and be capable of withstanding impacts
of 300 joules (221.3 foot pounds).
(2) The bulkhead, door, and any other
accessible boundary separating the
flightcrew compartment from occupied
areas must be designed to resist a con-
stant 250 pound (1,113 Newtons) tensile
load on accessible handholds, including
the doorknob or handle.
(3) The bulkhead, door, and any other
boundary separating the flightcrew
compartment from any occupied areas
must be designed to resist penetration
by small arms fire and fragmentation
devices to a level equivalent to level
IIIa of the National Institute of Justice
(NIJ) Standard 0101.04.
(4) If required by the operating rules
of this chapter, an installed physical
secondary barrier (IPSB) must be in-
stalled to resist intrusion into the
flightdeck whenever the flightdeck
door is opened. When deployed, the
IPSB must:
(i) Resist a 250 pound (1113 Newtons)
static load in the direction of the pas-
senger cabin applied at the most crit-
ical locations on the IPSB;
(ii) Resist a 600 pound (2669 Newtons)
static load in the direction of the
flightdeck applied at the most critical
locations on the IPSB;
(iii) Delay a person attempting to ac-
cess the flightdeck by at least the time
required for a crewmember to open and
reclose the flightdeck door, but no less
than 5 seconds;
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