305 

Federal Aviation Administration, DOT 

§ 25.855 

area occupied by the crew or pas-
sengers, an adequate number of self- 
contained, removable ashtrays must be 
provided in designated smoking sec-
tions for all seated occupants. 

(g) Regardless of whether smoking is 

allowed in any other part of the air-
plane, lavatories must have self-con-
tained, removable ashtrays located 
conspicuously on or near the entry side 
of each lavatory door, except that one 
ashtray may serve more than one lava-
tory door if the ashtray can be seen 
readily from the cabin side of each lav-
atory served. 

(h) Each receptacle used for the dis-

posal of flammable waste material 
must be fully enclosed, constructed of 
at least fire resistant materials, and 
must contain fires likely to occur in it 
under normal use. The capability of the 
receptacle to contain those fires under 
all probable conditions of wear, mis-
alignment, and ventilation expected in 
service must be demonstrated by test. 

[Amdt. 25–83, 60 FR 6623, Feb. 2, 1995, as 
amended by Amdt. 25–116, 69 FR 62788, Oct. 
27, 2004] 

§ 25.854

Lavatory fire protection. 

For airplanes with a passenger capac-

ity of 20 or more: 

(a) Each lavatory must be equipped 

with a smoke detector system or equiv-
alent that provides a warning light in 
the cockpit, or provides a warning 
light or audible warning in the pas-
senger cabin that would be readily de-
tected by a flight attendant; and 

(b) Each lavatory must be equipped 

with a built-in fire extinguisher for 
each disposal receptacle for towels, 
paper, or waste, located within the lav-
atory. The extinguisher must be de-
signed to discharge automatically into 
each disposal receptacle upon occur-
rence of a fire in that receptacle. 

[Amdt. 25–74, 56 FR 15456, Apr. 16, 1991] 

§ 25.855

Cargo or baggage compart-

ments. 

For each cargo or baggage compart-

ment, the following apply: 

(a) The compartment must meet one 

of the class requirements of § 25.857. 

(b) Each of the following cargo or 

baggage compartments, as defined in 
§ 25.857, must have a liner that is sepa-

rate from, but may be attached to, the 
airplane structure: 

(1) Any Class B through Class E cargo 

or baggage compartment, and 

(2) Any Class F cargo or baggage 

compartment, unless other means of 
containing a fire and protecting crit-
ical systems and structure are pro-
vided. 

(c) Ceiling and sidewall liner panels 

of Class C cargo or baggage compart-
ments, and ceiling and sidewall liner 
panels in Class F cargo or baggage 
compartments, if installed to meet the 
requirements of paragraph (b)(2) of this 
section, must meet the test require-
ments of part III of appendix F of this 
part or other approved equivalent 
methods. 

(d) All other materials used in the 

construction of the cargo or baggage 
compartment must meet the applicable 
test criteria prescribed in part I of ap-
pendix F of this part or other approved 
equivalent methods. 

(e) No compartment may contain any 

controls, lines, equipment, or acces-
sories whose damage or failure would 
affect safe operation, unless those 
items are protected so that— 

(1) They cannot be damaged by the 

movement of cargo in the compart-
ment, and 

(2) Their breakage or failure will not 

create a fire hazard. 

(f) There must be means to prevent 

cargo or baggage from interfering with 
the functioning of the fire protective 
features of the compartment. 

(g) Sources of heat within the com-

partment must be shielded and insu-
lated to prevent igniting the cargo or 
baggage. 

(h) Flight tests must be conducted to 

show compliance with the provisions of 
§ 25.857 concerning— 

(1) Compartment accessibility, 
(2) The entries of hazardous quan-

tities of smoke or extinguishing agent 
into compartments occupied by the 
crew or passengers, and 

(3) The dissipation of the extin-

guishing agent in all Class C compart-
ments and, if applicable, in any Class F 
compartments. 

(i) During the above tests, it must be 

shown that no inadvertent operation of 
smoke or fire detectors in any com-
partment would occur as a result of 

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