434
14 CFR Ch. I (1–1–19 Edition)
§ 135.147
(g) The Administrator may authorize
deviations from this section if the Ad-
ministrator finds that special cir-
cumstances make full compliance with
this section unnecessary.
[Doc. No. FAA–2001–10047, 68 FR 54586, Sept.
17, 2003]
§ 135.147
Dual controls required.
No person may operate an aircraft in
operations requiring two pilots unless
it is equipped with functioning dual
controls. However, if the aircraft type
certification operating limitations do
not require two pilots, a throwover
control wheel may be used in place of
two control wheels.
§ 135.149
Equipment requirements:
General.
No person may operate an aircraft
unless it is equipped with—
(a) A sensitive altimeter that is ad-
justable for barometric pressure;
(b) Heating or deicing equipment for
each carburetor or, for a pressure car-
buretor, an alternate air source;
(c) For turbojet airplanes, in addition
to two gyroscopic bank-and-pitch indi-
cators (artificial horizons) for use at
the pilot stations, a third indicator
that is installed in accordance with the
instrument requirements prescribed in
§ 121.305(j) of this chapter.
(d) [Reserved]
(e) For turbine powered aircraft, any
other equipment as the Administrator
may require.
[Doc. No. 16097, 43 FR 46783, Oct. 10, 1978, as
amended at Amdt. 135–1, 44 FR 26737, May 7,
1979; Amdt. 135–34, 54 FR 43926, Oct. 27, 1989;
Amdt. 135–38, 55 FR 43310, Oct. 26, 1990]
§ 135.150
Public address and crew-
member interphone systems.
No person may operate an aircraft
having a passenger seating configura-
tion, excluding any pilot seat, of more
than 19 unless it is equipped with—
(a) A public address system which—
(1) Is capable of operation inde-
pendent of the crewmember interphone
system required by paragraph (b) of
this section, except for handsets, head-
sets, microphones, selector switches,
and signaling devices;
(2) Is approved in accordance with
§ 21.305 of this chapter;
(3) Is accessible for immediate use
from each of two flight crewmember
stations in the pilot compartment;
(4) For each required floor-level pas-
senger emergency exit which has an ad-
jacent flight attendant seat, has a
microphone which is readily accessible
to the seated flight attendant, except
that one microphone may serve more
than one exit, provided the proximity
of the exits allows unassisted verbal
communication between seated flight
attendants;
(5) Is capable of operation within 10
seconds by a flight attendant at each of
those stations in the passenger com-
partment from which its use is acces-
sible;
(6) Is audible at all passenger seats,
lavatories, and flight attendant seats
and work stations; and
(7) For transport category airplanes
manufactured on or after November 27,
1990, meets the requirements of § 25.1423
of this chapter.
(b) A crewmember interphone system
which—
(1) Is capable of operation inde-
pendent of the public address system
required by paragraph (a) of this sec-
tion, except for handsets, headsets,
microphones, selector switches, and
signaling devices;
(2) Is approved in accordance with
§ 21.305 of this chapter;
(3) Provides a means of two-way com-
munication between the pilot compart-
ment and—
(i) Each passenger compartment; and
(ii) Each galley located on other than
the main passenger deck level;
(4) Is accessible for immediate use
from each of two flight crewmember
stations in the pilot compartment;
(5) Is accessible for use from at least
one normal flight attendant station in
each passenger compartment;
(6) Is capable of operation within 10
seconds by a flight attendant at each of
those stations in each passenger com-
partment from which its use is acces-
sible; and
(7) For large turbojet-powered air-
planes—
(i) Is accessible for use at enough
flight attendant stations so that all
floor-level emergency exits (or
entryways to those exits in the case of
exits located within galleys) in each
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