Federal Aviation Administration, DOT

Section 25.1703

the procedures for handling the airplane and any system having a significant effect on the performance information.
(2) VSR determined in accordance
with Section 25.103.
(3) The following performance information (determined by extrapolation
and computed for the range of weights
between the maximum landing weight
and the maximum takeoff weight):
(i) Climb in the landing configuration.
(ii) Climb in the approach configuration.
(iii) Landing distance.
(4) Procedures established under
Section 25.101(f) and (g) that are related to the
limitations and information required
by Section 25.1533 and by this paragraph (b) in
the form of guidance material, including any relevant limitations or information.
(5) An explanation of significant or
unusual flight or ground handling characteristics of the airplane.
(6) Corrections to indicated values of
airspeed, altitude, and outside air temperature.
(7) An explanation of operational
landing runway length factors included
in the presentation of the landing distance, if appropriate.
[Doc. No. 2000-8511, 66 FR 34024, June 26, 2001,
as amended by Amdt. 25-108, 67 FR 70828,
Nov. 26, 2002]

Subpart H - Electrical Wiring
Interconnection Systems (EWIS)

spaschal on DSK3GDR082PROD with CFR

SOURCE: Docket No. FAA-2004-18379, 72 FR
63406, Nov. 8, 2007, unless otherwise noted.

Section 25.1701 Definition.
(a) As used in this chapter, electrical
wiring interconnection system (EWIS)
means any wire, wiring device, or combination of these, including termination devices, installed in any area of
the airplane for the purpose of transmitting electrical energy, including
data and signals, between two or more
intended termination points. This includes:
(1) Wires and cables.
(2) Bus bars.
(3) The termination point on electrical devices, including those on relays,
interrupters,
switches,

contactors, terminal blocks and circuit
breakers, and other circuit protection
devices.
(4)
Connectors,
including
feedthrough connectors.
(5) Connector accessories.
(6) Electrical grounding and bonding
devices and their associated connections.
(7) Electrical splices.
(8) Materials used to provide additional protection for wires, including
wire insulation, wire sleeving, and conduits that have electrical termination
for the purpose of bonding.
(9) Shields or braids.
(10) Clamps and other devices used to
route and support the wire bundle.
(11) Cable tie devices.
(12) Labels or other means of identification.
(13) Pressure seals.
(14) EWIS components inside shelves,
panels, racks, junction boxes, distribution panels, and back-planes of equipment racks, including, but not limited
to, circuit board back-planes, wire integration units, and external wiring of
equipment.
(b) Except for the equipment indicated in paragraph (a)(14) of this section, EWIS components inside the following equipment, and the external
connectors that are part of that equipment, are excluded from the definition
in paragraph (a) of this section:
(1) Electrical equipment or avionics
that are qualified to environmental
conditions and testing procedures when
those conditions and procedures are - 
(i) Appropriate for the intended function and operating environment, and
(ii) Acceptable to the FAA.
(2) Portable electrical devices that
are not part of the type design of the
airplane. This includes personal entertainment devices and laptop computers.
(3) Fiber optics.
Section 25.1703 Function and installation:
EWIS.
(a) Each EWIS component installed
in any area of the aircraft must:
(1) Be of a kind and design appropriate to its intended function.
(2) Be installed according to limitations specified for the EWIS components.

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