20
14 CFR Ch. I (1–1–14 Edition)
§ 1.3
V
MO
/
M
MO
means maximum operating
limit speed.
V
MU
means minimum unstick speed.
V
NE
means never-exceed speed.
V
NO
means maximum structural
cruising speed.
V
R
means rotation speed.
V
REF
means reference landing speed.
V
S
means the stalling speed or the
minimum steady flight speed at which
the airplane is controllable.
V
S0
means the stalling speed or the
minimum steady flight speed in the
landing configuration.
V
S1
means the stalling speed or the
minimum steady flight speed obtained
in a specific configuration.
V
SR
means reference stall speed.
V
SRO
means reference stall speed in
the landing configuration.
V
SR1
means reference stall speed in a
specific configuration.
V
SW
means speed at which onset of
natural or artificial stall warning oc-
curs.
V
TOSS
means takeoff safety speed for
Category A rotorcraft.
V
X
means speed for best angle of
climb.
V
Y
means speed for best rate of
climb.
V
1
means the maximum speed in the
takeoff at which the pilot must take
the first action (e.g., apply brakes, re-
duce thrust, deploy speed brakes) to
stop the airplane within the accelerate-
stop distance. V
1
also means the min-
imum speed in the takeoff, following a
failure of the critical engine at V
EF
, at
which the pilot can continue the take-
off and achieve the required height
above the takeoff surface within the
takeoff distance.
V
2
means takeoff safety speed.
V
2min
means minimum takeoff safety
speed.
VFR
means visual flight rules.
VHF
means very high frequency.
VOR
means very high frequency om-
nirange station.
VORTAC
means collocated VOR and
TACAN.
[Doc. No. 1150, 27 FR 4590, May 15, 1962]
E
DITORIAL
N
OTE
: For F
EDERAL
R
EGISTER
ci-
tations affecting § 1.2, see the List of CFR
Sections Affected, which appears in the
Finding Aids section of the printed volume
and at
www.fdsys.gov.
§ 1.3
Rules of construction.
(a) In Subchapters A through K of
this chapter, unless the context re-
quires otherwise:
(1) Words importing the singular in-
clude the plural;
(2) Words importing the plural in-
clude the singular; and
(3) Words importing the masculine
gender include the feminine.
(b) In Subchapters A through K of
this chapter, the word:
(1)
Shall is used in an imperative
sense;
(2)
May is used in a permissive sense
to state authority or permission to do
the act prescribed, and the words ‘‘no
person may * * *’’ or ‘‘a person may
not * * *’’ mean that no person is re-
quired, authorized, or permitted to do
the act prescribed; and
(3)
Includes means ‘‘includes but is
not limited to’’.
[Doc. No. 1150, 27 FR 4590, May 15, 1962, as
amended by Amdt. 1–10, 31 FR 5055, Mar. 29,
1966]
PART 3—GENERAL REQUIREMENTS
Sec.
3.1
Applicability.
3.5
Statements about products, parts, appli-
ances and materials.
A
UTHORITY
: 49 U.S.C. 106(g), 40113, 44701,
and 44704.
S
OURCE
: 70 FR 54832, Sept. 16, 2005, unless
otherwise noted.
§ 3.1
Applicability.
(a) This part applies to any person
who makes a record regarding:
(1) A type-certificated product, or
(2) A product, part, appliance or ma-
terial that may be used on a type-cer-
tificated product.
(b) Section 3.5(b) does not apply to
records made under part 43 of this
chapter.
§ 3.5
Statements about products, parts,
appliances and materials.
(a)
Definitions. The following terms
will have the stated meanings when
used in this section:
Airworthy means the aircraft con-
forms to its type design and is in a con-
dition for safe operation.
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