286 

14 CFR Ch. I (1–1–19 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. 

(b) Airplanes with a maximum cer-

tificated passenger seating capacity of 
more than 60 persons or a maximum 
certificated takeoff gross weight of 
over 100,000 pounds (45,359 Kilograms) 
must be designed to limit the effects of 
an explosive or incendiary device as 
follows: 

(1) 

Flightdeck smoke protection. 

Means 

must be provided to limit entry of 
smoke, fumes, and noxious gases into 
the flightdeck. 

(2) 

Passenger cabin smoke protection. 

Means must be provided to prevent pas-
senger incapacitation in the cabin re-
sulting from smoke, fumes, and nox-
ious gases as represented by the initial 
combined volumetric concentrations of 
0.59% carbon monoxide and 1.23% car-
bon dioxide. 

VerDate Sep<11>2014 

12:50 Apr 30, 2019

Jkt 247046

PO 00000

Frm 00296

Fmt 8010

Sfmt 8010

Y:\SGML\247046.XXX

247046

spaschal on DSK3GDR082PROD with CFR