title-14-part-29-sec29-853

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14 CFR Ch. I (1–1–24 Edition)

§ 29.853

(b)

Built-in fire extinguishers. If a

built-in fire extinguishing system is re-
quired—

(1) The capacity of each system, in

relation to the volume of the compart-
ment where used and the ventilation
rate, must be adequate for any fire
likely to occur in that compartment.

(2) Each system must be installed so

that—

(i) No extinguishing agent likely to

enter personnel compartments will be
present in a quantity that is hazardous
to the occupants; and

(ii) No discharge of the extinguisher

can cause structural damage.

§ 29.853

Compartment interiors.

For each compartment to be used by

the crew or passengers—

(a) The materials (including finishes

or decorative surfaces applied to the
materials) must meet the following
test criteria as applicable:

(1) Interior ceiling panels, interior

wall panels, partitions, galley struc-
ture, large cabinet walls, structural
flooring, and materials used in the con-
struction of stowage compartments
(other than underseat stowage com-
partments and compartments for stow-
ing small items such as magazines and
maps) must be self-extinguishing when
tested vertically in accordance with
the applicable portions of appendix F
of Part 25 of this chapter, or other ap-
proved equivalent methods. The aver-
age burn length may not exceed 6
inches and the average flame time
after removal of the flame source may
not exceed 15 seconds. Drippings from
the test specimen may not continue to
flame for more than an average of 3
seconds after falling.

(2) Floor covering, textiles (including

draperies and upholstery), seat cush-
ions, padding, decorative and non-
decorative coated fabrics, leather,
trays and galley furnishings, electrical
conduit, thermal and acoustical insula-
tion and insulation covering, air duct-
ing, joint and edge covering, cargo
compartment liners, insulation blan-
kets, cargo covers, and transparencies,
molded and thermoformed parts, air
ducting joints, and trim strips (decora-
tive and chafing) that are constructed
of materials not covered in paragraph
(a)(3) of this section, must be self ex-

tinguishing when tested vertically in
accordance with the applicable portion
of appendix F of Part 25 of this chapter,
or other approved equivalent methods.
The average burn length may not ex-
ceed 8 inches and the average flame
time after removal of the flame source
may not exceed 15 seconds. Drippings
from the test specimen may not con-
tinue to flame for more than an aver-
age of 5 seconds after falling.

(3) Acrylic windows and signs, parts

constructed in whole or in part of
elastometric materials, edge lighted
instrument assemblies consisting of
two or more instruments in a common
housing, seat belts, shoulder harnesses,
and cargo and baggage tiedown equip-
ment, including containers, bins, pal-
lets, etc., used in passenger or crew
compartments, may not have an aver-
age burn rate greater than 2.5 inches
per minute when tested horizontally in
accordance with the applicable por-
tions of appendix F of Part 25 of this
chapter, or other approved equivalent
methods.

(4) Except for electrical wire and

cable insulation, and for small parts
(such as knobs, handles, rollers, fas-
teners, clips, grommets, rub strips, pul-
leys, and small electrical parts) that
the Administrator finds would not con-
tribute significantly to the propaga-
tion of a fire, materials in items not
specified in paragraphs (a)(1), (a)(2), or
(a)(3) of this section may not have a
burn rate greater than 4 inches per
minute when tested horizontally in ac-
cordance with the applicable portions
of appendix F of Part 25 of this chapter,
or other approved equivalent methods.

(b) In addition to meeting the re-

quirements of paragraph (a)(2), seat
cushions, except those on flight crew-
member seats, must meet the test re-
quirements of Part II of appendix F of
Part 25 of this chapter, or equivalent.

there must be a placard so stating, and
if smoking is to be allowed—

(1) There must be an adequate num-

ber of self-contained, removable ash-
trays; and

(2) Where the crew 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

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§ 29.859

smoking is prohibited. Signs which no-
tify when smoking is prohibited must—

(i) When illuminated, be legible to

each passenger seated in the passenger
cabin under all probable lighting condi-
tions; and

(ii) Be so constructed that the crew

can turn the illumination on and off.

(d) Each receptacle for towels, paper,

or waste must be at least fire-resistant
and must have means for containing
possible fires;

(e) There must be a hand fire extin-

guisher for the flight crewmembers;
and

(f) At least the following number of

hand fire extinguishers must be con-
veniently located in passenger com-
partments:

Passenger capacity

Fire extin-

guishers

7 through 30 ..................................................

31 through 60 ................................................

61 or more .....................................................

(Secs. 313(a), 601, 603, 604, Federal Aviation
Act of 1958 (49 U.S.C. 1354(a), 1421, 1423, 1424),
sec. 6(c), Dept. of Transportation Act (49
U.S.C. 1655(c)))

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as
amended by Amdt. 29–3, 33 FR 969, Jan. 26,
1968; Amdt. 29–17, 43 FR 50600, Oct. 30, 1978;
Amdt. 29–18, 45 FR 7756, Feb. 4, 1980; Amdt.
29–23, 49 FR 43200, Oct. 26, 1984]

§ 29.855

Cargo and baggage compart-

ments.

(a) Each cargo and baggage compart-

ment must be construced of or lined
with materials in accordance with the
following:

(1) For accessible and inaccessible

compartments not occupied by pas-
sengers or crew, the material must be
at least fire resistant.

(2) Materials must meet the require-

ments in § 29.853(a)(1), (a)(2), and (a)(3)
for cargo or baggage compartments in
which—

(i) The presence of a compartment

fire would be easily discovered by a
crewmember while at the crew-
member’s station;

(ii) Each part of the compartment is

easily accessible in flight;

(iii) The compartment has a volume

of 200 cubic feet or less; and

(iv) Notwithstanding § 29.1439(a), pro-

tective breathing equipment is not re-
quired.

(b) No compartment may contain any

controls, wiring, lines, equipment, or
accessories 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.

sible compartments must be adequate
to contain compartment fires until a
landing and safe evacuation can be
made.

(d) Each cargo and baggage compart-

ment that is not sealed so as to contain
cargo compartment fires completely
without endangering the safety of a
rotorcraft or its occupants must be de-
signed, or must have a device, to en-
sure detection of fires or smoke by a
crewmember while at his station and
to prevent the accumulation of harm-
ful quantities of smoke, flame, extin-
guishing agents, and other noxious
gases in any crew or passenger com-
partment. This must be shown in
flight.

(e) For rotorcraft used for the car-

riage of cargo only, the cabin area may
be considered a cargo compartment
and, in addition to paragraphs (a)
through (d) of this section, the fol-
lowing apply:

(1) There must be means to shut off

the ventilating airflow to or within the
compartment. Controls for this purpose
must be accessible to the flight crew in
the crew compartment.

(2) Required crew emergency exits

must be accessible under all cargo
loading conditions.

(3) Sources of heat within each com-

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

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as
amended by Amdt. 29–3, 33 FR 969, Jan. 26,
1968; Amdt. 29–24, 49 FR 44438, Nov. 6, 1984;
Amdt. 27–26, 55 FR 8004, Mar. 6, 1990]

§ 29.859

Combustion heater fire pro-

tection.

(a)

Combustion heater fire zones. The

following combustion heater fire zones
must be protected against fire under