Section 135.147

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

(g) The Administrator may authorize
deviations from this section if the Administrator finds that special circumstances make full compliance with
this section unnecessary.
[Doc. No. FAA-2001-10047, 68 FR 54586, Sept.
17, 2003]

Section 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.
Section 135.149 Equipment
General.

requirements:

No person may operate an aircraft
unless it is equipped with - 
(a) A sensitive altimeter that is adjustable for barometric pressure;
(b) Heating or deicing equipment for
each carburetor or, for a pressure carburetor, an alternate air source;
(c) For turbojet airplanes, in addition
to two gyroscopic bank-and-pitch indicators (artificial horizons) for use at
the pilot stations, a third indicator
that is installed in accordance with the
instrument requirements prescribed in
Section 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]

Section 135.150 Public address and
member interphone systems.

crew-

No person may operate an aircraft
having a passenger seating configuration, excluding any pilot seat, of more
than 19 unless it is equipped with - 
(a) A public address system which - 
(1) Is capable of operation independent of the crewmember interphone
system required by paragraph (b) of
this section, except for handsets, headsets, microphones, selector switches,
and signaling devices;
(2) Is approved in accordance with
Section 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 passenger emergency exit which has an adjacent 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 compartment from which its use is accessible;
(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 Section 25.1423
of this chapter.
(b) A crewmember interphone system
which - 
(1) Is capable of operation independent of the public address system
required by paragraph (a) of this section, except for handsets, headsets,
microphones, selector switches, and
signaling devices;
(2) Is approved in accordance with
Section 21.305 of this chapter;
(3) Provides a means of two-way communication between the pilot compartment 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 compartment from which its use is accessible; and
(7) For large turbojet-powered airplanes - 
(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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