Section 25.1713

14 CFR Ch. I (1-1-19 Edition)

effect on the performance of that component throughout its expected service
life.
(e) Identification for EWIS modifications to the type design must be consistent with the identification scheme
of the original type design.
Section 25.1713 Fire protection: EWIS.
(a) All EWIS components must meet
the applicable fire and smoke protection requirements of Section 25.831(c) of this
part.
(b) EWIS components that are located in designated fire zones and are
used during emergency procedures
must be fire resistant.
(c) Insulation on electrical wire and
electrical cable, and materials used to
provide additional protection for the
wire and cable, installed in any area of
the airplane, must be self-extinguishing when tested in accordance
with the applicable portions of Appendix F, part I, of 14 CFR part 25.
Section 25.1715 Electrical bonding and protection against static electricity:
EWIS.
(a) EWIS components used for electrical bonding and protection against
static electricity must meet the requirements of Section 25.899.
(b) On airplanes having grounded
electrical systems, electrical bonding
provided by EWIS components must
provide an electrical return path capable of carrying both normal and fault
currents without creating a shock hazard or damage to the EWIS components, other airplane system components, or airplane structure.

spaschal on DSK3GDR082PROD with CFR

Section 25.1717 Circuit protective devices:
EWIS.
Electrical wires and cables must be
designed and installed so they are compatible with the circuit protection devices required by Section 25.1357, so that a fire
or smoke hazard cannot be created
under temporary or continuous fault
conditions.
Section 25.1719 Accessibility
provisions:
EWIS.
Access must be provided to allow inspection and replacement of any EWIS
component as necessary for continued
airworthiness.

Section 25.1721 Protection of EWIS.
(a) No cargo or baggage compartment
may contain any EWIS whose damage
or failure may affect safe operation,
unless the EWIS is protected so that:
(1) It cannot be damaged by movement of cargo or baggage in the compartment.
(2) Its breakage or failure will not
create a fire hazard.
(b) EWIS must be designed and installed to minimize damage and risk of
damage to EWIS by movement of people in the airplane during all phases of
flight, maintenance, and servicing.
(c) EWIS must be designed and installed to minimize damage and risk of
damage to EWIS by items carried onto
the aircraft by passengers or cabin
crew.
Section 25.1723 Flammable fluid fire protection: EWIS.
EWIS components located in each
area where flammable fluid or vapors
might escape by leakage of a fluid system must be considered a potential ignition source and must meet the requirements of Section 25.863.
Section 25.1725 Powerplants: EWIS.
(a) EWIS associated with any powerplant must be designed and installed so
that the failure of an EWIS component
will not prevent the continued safe operation of the remaining powerplants
or require immediate action by any
crewmember for continued safe operation, in accordance with the requirements of Section 25.903(b).
(b) Design precautions must be taken
to minimize hazards to the airplane
due to EWIS damage in the event of a
powerplant rotor failure or a fire originating within the powerplant that
burns through the powerplant case, in
accordance with the requirements of
Section 25.903(d)(1).
Section 25.1727 Flammable
fluid
shutoff
means: EWIS.
EWIS associated with each flammable fluid shutoff means and control
must be fireproof or must be located
and protected so that any fire in a fire
zone will not affect operation of the
flammable fluid shutoff means, in accordance with the requirements of
Section 25.1189.

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