775
Federal Aviation Administration, DOT
§ 91.851
(3) To conduct ‘‘nondispensing aerial
work operations’’ in accordance with
the requirements under § 137.29(c) of
this chapter.
§ 91.817
Civil aircraft sonic boom.
(a) No person may operate a civil air-
craft in the United States at a true
flight Mach number greater than 1 ex-
cept in compliance with conditions and
limitations in an authorization to ex-
ceed Mach 1 issued to the operator
under appendix B of this part.
(b) In addition, no person may oper-
ate a civil aircraft for which the max-
imum operating limit speed M
M0
ex-
ceeds a Mach number of 1, to or from
an airport in the United States, un-
less—
(1) Information available to the
flight crew includes flight limitations
that ensure that flights entering or
leaving the United States will not
cause a sonic boom to reach the surface
within the United States; and
(2) The operator complies with the
flight limitations prescribed in para-
graph (b)(1) of this section or complies
with conditions and limitations in an
authorization to exceed Mach 1 issued
under appendix B of this part.
(Approved by the Office of Management and
Budget under control number 2120–0005)
§ 91.819
Civil supersonic airplanes that
do not comply with part 36.
(a)
Applicability. This section applies
to civil supersonic airplanes that have
not been shown to comply with the
Stage 2 noise limits of part 36 in effect
on October 13, 1977, using applicable
trade-off provisions, and that are oper-
ated in the United States, after July
31, 1978.
(b)
Airport use. Except in an emer-
gency, the following apply to each per-
son who operates a civil supersonic air-
plane to or from an airport in the
United States:
(1) Regardless of whether a type de-
sign change approval is applied for
under part 21 of this chapter, no person
may land or take off an airplane cov-
ered by this section for which the type
design is changed, after July 31, 1978, in
a manner constituting an ‘‘acoustical
change’’ under § 21.93 unless the acous-
tical change requirements of part 36
are complied with.
(2) No flight may be scheduled, or
otherwise planned, for takeoff or land-
ing after 10 p.m. and before 7 a.m. local
time.
§ 91.821
Civil supersonic airplanes:
Noise limits.
Except for Concorde airplanes having
flight time before January 1, 1980, no
person may operate in the United
States, a civil supersonic airplane that
does not comply with Stage 2 noise
limits of part 36 in effect on October 13,
1977, using applicable trade-off provi-
sions.
§§ 91.823–91.849
[Reserved]
§ 91.851
Definitions.
For the purposes of §§ 91.851 through
91.877 of this subpart:
Chapter 4 noise level means a noise
level at or below the maximum noise
level prescribed in Chapter 4, Para-
graph 4.4, Maximum Noise Levels, of
the International Civil Aviation Orga-
nization (ICAO) Annex 16, Volume I,
Amendment 7, effective March 21, 2002.
The Director of the Federal Register in
accordance with 5 U.S.C. 552(a) and 1
CFR part 51 approved the incorporation
by reference of this document, which
can be obtained from the International
Civil Aviation Organization (ICAO),
Document Sales Unit, 999 University
Street, Montreal, Quebec H3C 5H7, Can-
ada. Also, you may obtain documents
on the Internet at
http://www.ICAO.int/
eshop/index.cfm. Copies may be reviewed
at the U.S. Department of Transpor-
tation, Docket Operations, West Build-
ing Ground Floor, Room W12–140, 1200
New Jersey Avenue, SE., Washington,
DC 20590 or at the National Archives
and Records Administration (NARA).
For information on the availability of
this material at NARA, call 202–741–
6030, or go to:
http://www.archives.gov/
federal
lregister/
code
loflfederallregulations/
ibr
llocations.html.
Contiguous United States means the
area encompassed by the 48 contiguous
United States and the District of Co-
lumbia.
Fleet means those civil subsonic jet
(turbojet) airplanes with a maximum
certificated weight of more than 75,000
pounds that are listed on an operator’s
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