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Notes

14 C.F.R. §§ 29.1181–29.1191

6 sections in range

§29.1181. Designated fire zones: regions included.

14 C.F.R. § 29.1181

(a)
Designated fire zones are—
(1)
The engine power section of reciprocating engines;
(2)
The engine accessory section of reciprocating engines;
(3)
Any complete powerplant compartment in which there is no isolation between the engine power section and the engine accessory section, for reciprocating engines;
(4)
Any auxiliary power unit compartment;
(5)
Any fuel-burning heater and other combustion equipment installation described in § 29.859;
(6)
The compressor and accessory sections of turbine engines; and
(7)
The combustor, turbine, and tailpipe sections of turbine engine installations except sections that do not contain lines and components carrying flammable fluids or gases and are isolated from the designated fire zone prescribed in paragraph (a)(6) of this section by a firewall that meets § 29.1191.
(b)
Each designated fire zone must meet the requirements of §§ 29.1183 through 29.1203.
Notes, amendments, and revision history

Amendments

[Amdt. 29-3, 33 FR 970, Jan. 26, 1968, as amended by Amdt. 29-26, 53 FR 34219, Sept. 2, 1988]

Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704.

Source

Source: Docket No. 5084, 29 FR 16150, Dec. 3, 1964, unless otherwise noted.

Amendments

[Amdt. 29-3, 33 FR 970, Jan. 26, 1968, as amended by Amdt. 29-26, 53 FR 34219, Sept. 2, 1988]

§29.1183. Lines, fittings, and components.

14 C.F.R. § 29.1183

(a)
Except as provided in paragraph (b) of this section, each line, fitting, and other component carrying flammable fluid in any area subject to engine fire conditions and each component which conveys or contains flammable fluid in a designated fire zone must be fire resistant, except that flammable fluid tanks and supports in a designated fire zone must be fireproof or be enclosed by a fireproof shield unless damage by fire to any non-fireproof part will not cause leakage or spillage of flammable fluid. Components must be shielded or located so as to safeguard against the ignition of leaking flammable fluid. An integral oil sump of less than 25-quart capacity on a reciprocating engine need not be fireproof nor be enclosed by a fireproof shield.
(b)
Paragraph (a) of this section does not apply to—
(1)
Lines, fittings, and components which are already approved as part of a type certificated engine; and
(2)
Vent and drain lines, and their fittings, whose failure will not result in or add to, a fire hazard.
Notes, amendments, and revision history

Amendments

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 29-2, 32 FR 6914, May 5, 1967; Amdt. 29-10, 39 FR 35463, Oct. 1, 1974; Amdt. 29-22, 49 FR 6850, Feb. 23, 1984]

Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704.

Source

Source: Docket No. 5084, 29 FR 16150, Dec. 3, 1964, unless otherwise noted.

Amendments

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 29-2, 32 FR 6914, May 5, 1967; Amdt. 29-10, 39 FR 35463, Oct. 1, 1974; Amdt. 29-22, 49 FR 6850, Feb. 23, 1984]

§29.1185. Flammable fluids.

14 C.F.R. § 29.1185

(a)
No tank or reservoir that is part of a system containing flammable fluids or gases may be in a designated fire zone unless the fluid contained, the design of the system, the materials used in the tank and its supports, the shutoff means, and the connections, lines, and controls provide a degree of safety equal to that which would exist if the tank or reservoir were outside such a zone.
(b)
Each fuel tank must be isolated from the engines by a firewall or shroud.
(c)
There must be at least one-half inch of clear airspace between each tank or reservoir and each firewall or shroud isolating a designated fire zone, unless equivalent means are used to prevent heat transfer from the fire zone to the flammable fluid.
(d)
Absorbent material close to flammable fluid system components that might leak must be covered or treated to prevent the absorption of hazardous quantities of fluids.
Notes, amendments, and revision history

Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704.

Source

Source: Docket No. 5084, 29 FR 16150, Dec. 3, 1964, unless otherwise noted.

§29.1187. Drainage and ventilation of fire zones.

14 C.F.R. § 29.1187

(a)
There must be complete drainage of each part of each designated fire zone to minimize the hazards resulting from failure or malfunction of any component containing flammable fluids. The drainage means must be—
(1)
Effective under conditions expected to prevail when drainage is needed; and
(2)
Arranged so that no discharged fluid will cause an additional fire hazard.
(b)
Each designated fire zone must be ventilated to prevent the accumulation of flammable vapors.
(c)
No ventilation opening may be where it would allow the entry of flammable fluids, vapors, or flame from other zones.
(d)
Ventilation means must be arranged so that no discharged vapors will cause an additional fire hazard.
(e)
For category A rotorcraft, there must be means to allow the crew to shut off the sources of forced ventilation in any fire zone (other than the engine power section of the powerplant compartment) unless the amount of extinguishing agent and the rate of discharge are based on the maximum airflow through that zone.
Notes, amendments, and revision history

Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704.

Source

Source: Docket No. 5084, 29 FR 16150, Dec. 3, 1964, unless otherwise noted.

§29.1189. Shutoff means.

14 C.F.R. § 29.1189

(a)
There must be means to shut off or otherwise prevent hazardous quantities of fuel, oil, de-icing fluid, and other flammable fluids from flowing into, within, or through any designated fire zone, except that this means need not be provided—
(1)
For lines, fittings, and components forming an integral part of an engine;
(2)
For oil systems for turbine engine installations in which all components of the system, including oil tanks, are fireproof or located in areas not subject to engine fire conditions; or
(3)
For engine oil systems in category B rotorcraft using reciprocating engines of less than 500 cubic inches displacement.
(b)
The closing of any fuel shutoff valve for any engine may not make fuel unavailable to the remaining engines.
(c)
For category A rotorcraft, no hazardous quantity of flammable fluid may drain into any designated fire zone after shutoff has been accomplished, nor may the closing of any fuel shutoff valve for an engine make fuel unavailable to the remaining engines.
(d)
The operation of any shutoff may not interfere with the later emergency operation of any other equipment, such as the means for declutching the engine from the rotor drive.
(e)
Each shutoff valve and its control must be designed, located, and protected to function properly under any condition likely to result from fire in a designated fire zone.
(f)
Except for ground-use-only auxiliary power unit installations, there must be means to prevent inadvertent operation of each shutoff and to make it possible to reopen it in flight after it has been closed.
Notes, amendments, and revision history

Amendments

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 29-12, 41 FR 55473, Dec. 20, 1976; Amdt. 29-22, 49 FR 6850, Feb. 23, 1984; Amdt. 29-26, 53 FR 34219, Sept. 2, 1988]

Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704.

Source

Source: Docket No. 5084, 29 FR 16150, Dec. 3, 1964, unless otherwise noted.

Amendments

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 29-12, 41 FR 55473, Dec. 20, 1976; Amdt. 29-22, 49 FR 6850, Feb. 23, 1984; Amdt. 29-26, 53 FR 34219, Sept. 2, 1988]

§29.1191. Firewalls.

14 C.F.R. § 29.1191

(a)
Each engine, including the combustor, turbine, and tailpipe sections of turbine engine installations, must be isolated by a firewall, shroud, or equivalent means, from personnel compartments, structures, controls, rotor mechanisms, and other parts that are—
(1)
Essential to controlled flight and landing; and
(2)
Not protected under § 29.861.
(b)
Each auxiliary power unit, combustion heater, and other combustion equipment to be used in flight, must be isolated from the rest of the rotorcraft by firewalls, shrouds, or equivalent means.
(c)
Each firewall or shroud must be constructed so that no hazardous quantity of air, fluid, or flame can pass from any engine compartment to other parts of the rotorcraft.
(d)
Each opening in the firewall or shroud must be sealed with close-fitting fireproof grommets, bushings, or firewall fittings.
(e)
Each firewall and shroud must be fireproof and protected against corrosion.
(f)
In meeting this section, account must be taken of the probable path of a fire as affected by the airflow in normal flight and in autorotation.
Notes, amendments, and revision history

Amendments

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 29-3, 33 FR 970, Jan. 26, 1968]

Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704.

Source

Source: Docket No. 5084, 29 FR 16150, Dec. 3, 1964, unless otherwise noted.

Amendments

[Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 29-3, 33 FR 970, Jan. 26, 1968]