752
14 CFR Ch. I (1–1–19 Edition)
§ 91.221
(ii) Upon approaching a preselected
altitude in either ascent or descent, by
a sequence of visual signals in suffi-
cient time to establish level flight at
that preselected altitude, and when de-
viating above and below that
preselected altitude, by an aural sig-
nal;
(2) Provide the required signals from
sea level to the highest operating alti-
tude approved for the airplane in which
it is installed;
(3) Preselect altitudes in increments
that are commensurate with the alti-
tudes at which the aircraft is operated;
(4) Be tested without special equip-
ment to determine proper operation of
the alerting signals; and
(5) Accept necessary barometric pres-
sure settings if the system or device
operates on barometric pressure. How-
ever, for operation below 3,000 feet
AGL, the system or device need only
provide one signal, either visual or
aural, to comply with this paragraph.
A radio altimeter may be included to
provide the signal if the operator has
an approved procedure for its use to de-
termine DA/DH or MDA, as appro-
priate.
(c) Each operator to which this sec-
tion applies must establish and assign
procedures for the use of the altitude
alerting system or device and each
flight crewmember must comply with
those procedures assigned to him.
(d) Paragraph (a) of this section does
not apply to any operation of an air-
plane that has an experimental certifi-
cate or to the operation of any airplane
for the following purposes:
(1) Ferrying a newly acquired air-
plane from the place where possession
of it was taken to a place where the al-
titude alerting system or device is to
be installed.
(2) Continuing a flight as originally
planned, if the altitude alerting system
or device becomes inoperative after the
airplane has taken off; however, the
flight may not depart from a place
where repair or replacement can be
made.
(3) Ferrying an airplane with any in-
operative altitude alerting system or
device from a place where repairs or re-
placements cannot be made to a place
where it can be made.
(4) Conducting an airworthiness
flight test of the airplane.
(5) Ferrying an airplane to a place
outside the United States for the pur-
pose of registering it in a foreign coun-
try.
(6) Conducting a sales demonstration
of the operation of the airplane.
(7) Training foreign flight crews in
the operation of the airplane before
ferrying it to a place outside the
United States for the purpose of reg-
istering it in a foreign country.
[Doc. No. 18334, 54 FR 34304, Aug. 18, 1989, as
amended by Amdt. 91–296, 72 FR 31679, June
7, 2007]
§ 91.221
Traffic alert and collision
avoidance system equipment and
use.
(a)
All airspace: U.S.-registered civil
aircraft.
Any traffic alert and collision
avoidance system installed in a U.S.-
registered civil aircraft must be ap-
proved by the Administrator.
(b)
Traffic alert and collision avoidance
system, operation required.
Each person
operating an aircraft equipped with an
operable traffic alert and collision
avoidance system shall have that sys-
tem on and operating.
§ 91.223
Terrain awareness and warn-
ing system.
(a)
Airplanes manufactured after March
29, 2002.
Except as provided in para-
graph (d) of this section, no person may
operate a turbine-powered U.S.-reg-
istered airplane configured with six or
more passenger seats, excluding any
pilot seat, unless that airplane is
equipped with an approved terrain
awareness and warning system that as
a minimum meets the requirements for
Class B equipment in Technical Stand-
ard Order (TSO)–C151.
(b)
Airplanes manufactured on or before
March 29, 2002.
Except as provided in
paragraph (d) of this section, no person
may operate a turbine-powered U.S.-
registered airplane configured with six
or more passenger seats, excluding any
pilot seat, after March 29, 2005, unless
that airplane is equipped with an ap-
proved terrain awareness and warning
system that as a minimum meets the
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