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726 

14 CFR Ch. I (1–1–24 Edition) 

§ 91.221 

(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 
requirements for Class B equipment in 
Technical Standard Order (TSO)–C151. 

(Approved by the Office of Management and 
Budget under control number 2120–0631) 

(c) 

Airplane Flight Manual. The Air-

plane Flight Manual shall contain ap-
propriate procedures for— 

(1) The use of the terrain awareness 

and warning system; and 

(2) Proper flight crew reaction in re-

sponse to the terrain awareness and 
warning system audio and visual warn-
ings. 

(d) 

Exceptions.  Paragraphs (a) and (b) 

of this section do not apply to— 

(1) Parachuting operations when con-

ducted entirely within a 50 nautical 
mile radius of the airport from which 
such local flight operations began. 

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727 

Federal Aviation Administration, DOT 

§ 91.225 

(2) Firefighting operations. 
(3) Flight operations when incident 

to the aerial application of chemicals 
and other substances. 

[Doc. No. 29312, 65 FR 16755, Mar. 29, 2000] 

§ 91.225

Automatic Dependent Surveil-

lance-Broadcast (ADS–B) Out equip-
ment and use. 

(a) After January 1, 2020, unless oth-

erwise authorized by ATC, no person 
may operate an aircraft in Class A air-
space unless the aircraft has equipment 
installed that— 

(1) Meets the performance require-

ments in– 

(i) TSO–C166b and Section 2 of RTCA 

DO–260B (as referenced in TSO–C166b); 
or 

(ii) TSO–C166c and Section 2 of RTCA 

DO–260C as modified by DO–260C— 
Change 1 (as referenced in TSO–C166c); 
and 

(2) Meets the requirements of § 91.227. 
(b) After January 1, 2020, except as 

prohibited in paragraph (h)(2) of this 
section or unless otherwise authorized 
by ATC, no person may operate an air-
craft below 18,000 feet MSL and in air-
space described in paragraph (d) of this 
section unless the aircraft has equip-
ment installed that— 

(1) Meets the performance require-

ments in— 

(i) TSO–C166b and Section 2 of RTCA 

DO–260B (as referenced in TSO–C166b); 

(ii) TSO–C166c and Section 2 of RTCA 

DO–260C as modified by DO–260C— 
Change 1 (as referenced in TSO–C166c); 

(iii) TSO–C154c and Section 2 of 

RTCA DO–282B (as referenced in TSO– 
C154c); or 

(iv) TSO–C154d and Section 2 of 

RTCA DO–282C (as referenced in TSO– 
C154d); 

(2) Meets the requirements of § 91.227. 
(c) Operators with equipment in-

stalled with an approved deviation 
under § 21.618 of this chapter also are in 
compliance with this section. 

(d) After January 1, 2020, except as 

prohibited in paragraph (i)(2) of this 
section or unless otherwise authorized 
by ATC, no person may operate an air-
craft in the following airspace unless 
the aircraft has equipment installed 
that meets the requirements in para-
graph (b) of this section: 

(1) Class B and Class C airspace areas; 

(2) Except as provided for in para-

graph (e) of this section, within 30 nau-
tical miles of an airport listed in ap-
pendix D, section 1 to this part from 
the surface upward to 10,000 feet MSL; 

(3) Above the ceiling and within the 

lateral boundaries of a Class B or Class 
C airspace area designated for an air-
port upward to 10,000 feet MSL; 

(4) Except as provided in paragraph 

(e) of this section, Class E airspace 
within the 48 contiguous states and the 
District of Columbia at and above 
10,000 feet MSL, excluding the airspace 
at and below 2,500 feet above the sur-
face; and 

(5) Class E airspace at and above 3,000 

feet MSL over the Gulf of Mexico from 
the coastline of the United States out 
to 12 nautical miles. 

(e) The requirements of paragraph (b) 

of this section do not apply to any air-
craft that was not originally certifi-
cated with an engine-driven electrical 
system, or that has not subsequently 
been certified with such a system in-
stalled, including balloons and gliders. 
These aircraft may conduct operations 
without ADS–B Out in the airspace 
specified in paragraph (d)(4) of this sec-
tion. These aircraft may also conduct 
operations in the airspace specified in 
paragraph (d)(2) of this section if those 
operations are conducted— 

(1) Outside any Class B or Class C air-

space area; and 

(2) Below the altitude of the ceiling 

of a Class B or Class C airspace area 
designated for an airport, or 10,000 feet 
MSL, whichever is lower. 

(f) Except as prohibited in paragraph 

(i)(2) of this section, each person oper-
ating an aircraft equipped with ADS–B 
Out must operate this equipment in 
the transmit mode at all times unless— 

(1) Otherwise authorized by the FAA 

when the aircraft is performing a sen-
sitive government mission for national 
defense, homeland security, intel-
ligence or law enforcement purposes 
and transmitting would compromise 
the operations security of the mission 
or pose a safety risk to the aircraft, 
crew, or people and property in the air 
or on the ground; or 

(2) Otherwise directed by ATC when 

transmitting would jeopardize the safe 
execution of air traffic control func-
tions. 

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