Federal Aviation Administration, DOT

Section 125.189

(5) Its location does not obscure any
passenger-s view of the  - seat belt - 
sign,  - no smoking -  sign, or required
exit sign, unless an auxiliary sign or
other approved means for proper notification of the passenger is provided.
Section 125.185 Carriage of cargo in cargo
compartments.
When cargo is carried in cargo compartments that are designed to require
the physical entry of a crewmember to
extinguish any fire that may occur
during flight, the cargo must be loaded
so as to allow a crewmember to effectively reach all parts of the compartment with the contents of a hand-held
fire extinguisher.
Section 125.187 Landing gear: Aural warning
device.
(a) Except for airplanes that comply
with the requirements of Section 25.729 of this
chapter on or after January 6, 1992,
each airplane must have a landing gear
aural warning device that functions
continuously under the following conditions:
(1) For airplanes with an established
approach wing-flap position, whenever
the wing flaps are extended beyond the
maximum certificated approach climb
configuration position in the Airplane
Flight Manual and the landing gear is
not fully extended and locked.
(2) For airplanes without an established approach climb wing-flap position, whenever the wing flaps are extended beyond the position at which
landing gear extension is normally performed and the landing gear is not
fully extended and locked.
(b) The warning system required by
paragraph (a) of this section - 
(1) May not have a manual shutoff;
(2) Must be in addition to the throttle-actuated device installed under the
type certification airworthiness requirements; and
(3) May utilize any part of the throttle-actuated system including the
aural warning device.
(c) The flap position sensing unit
may be installed at any suitable place
in the airplane.
[Doc. No. 19779, 45 FR 67235, Oct. 9, 1980, as
amended by Amdt. 125-16, 56 FR 63762, Dec. 5,
1991]

Section 125.189 Demonstration of emergency
evacuation procedures.
(a) Each certificate holder must
show, by actual demonstration conducted in accordance with paragraph
(a) of appendix B of this part, that the
emergency evacuation procedures for
each type and model of airplane with a
seating of more than 44 passengers,
that is used in its passenger-carrying
operations, allow the evacuation of the
full seating capacity, including crewmembers, in 90 seconds or less, in each
of the following circumstances:
(1) A demonstration must be conducted by the certificate holder upon
the initial introduction of a type and
model of airplane into passenger-carrying operations. However, the demonstration need not be repeated for any
airplane type or model that has the
same number and type of exits, the
same cabin configuration, and the
same emergency equipment as any
other airplane used by the certificate
holder in successfully demonstrating
emergency evacuation in compliance
with this paragraph.
(2) A demonstration must be conducted - 
(i) Upon increasing by more than 5
percent the passenger seating capacity
for which successful demonstration has
been conducted; or
(ii) Upon a major change in the passenger cabin interior configuration
that will affect the emergency evacuation of passengers.
(b) If a certificate holder has conducted a successful demonstration required by Section 121.291(a) in the same type
airplane as a part 121 or part 123 certificate holder, it need not conduct a
demonstration under this paragraph in
that type airplane to achieve certification under part 125.
(c) Each certificate holder operating
or proposing to operate one or more
landplanes in extended overwater operations, or otherwise required to have
certain equipment under Section 125.209, must
show, by a simulated ditching conducted in accordance with paragraph
(b) of appendix B of this part, that it
has the ability to efficiently carry out
its ditching procedures.
(d) If a certificate holder has conducted a successful demonstration required by Section 121.291(b) in the same type

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