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14 CFR Ch. I (1–1–18 Edition) 

§ 1.1 

power that is producible from sea level 
to an established higher altitude. 

Amateur rocket means an unmanned 

rocket that: 

(1) Is propelled by a motor or motors 

having a combined total impulse of 
889,600 Newton-seconds (200,000 pound- 
seconds) or less; and 

(2) Cannot reach an altitude greater 

than 150 kilometers (93.2 statute miles) 
above the earth’s surface. 

Appliance  means any instrument, 

mechanism, equipment, part, appa-
ratus, appurtenance, or accessory, in-
cluding communications equipment, 
that is used or intended to be used in 
operating or controlling an aircraft in 
flight, is installed in or attached to the 
aircraft, and is not part of an airframe, 
engine, or propeller. 

Approved, unless used with reference 

to another person, means approved by 
the FAA or any person to whom the 
FAA has delegated its authority in the 
matter concerned, or approved under 
the provisions of a bilateral agreement 
between the United States and a for-
eign country or jurisdiction. 

Area navigation (RNAV) is a method 

of navigation that permits aircraft op-
erations on any desired flight path. 

Area navigation (RNAV) route is an 

ATS route based on RNAV that can be 
used by suitably equipped aircraft. 

Armed Forces means the Army, Navy, 

Air Force, Marine Corps, and Coast 
Guard, including their regular and re-
serve components and members serving 
without component status. 

Autorotation means a rotorcraft flight 

condition in which the lifting rotor is 
driven entirely by action of the air 
when the rotorcraft is in motion. 

Auxiliary rotor means a rotor that 

serves either to counteract the effect of 
the main rotor torque on a rotorcraft 
or to maneuver the rotorcraft about 
one or more of its three principal axes. 

Balloon  means a lighter-than-air air-

craft that is not engine driven, and 
that sustains flight through the use of 
either gas buoyancy or an airborne 
heater. 

Brake horsepower means the power de-

livered at the propeller shaft (main 
drive or main output) of an aircraft en-
gine. 

Calibrated airspeed means the indi-

cated airspeed of an aircraft, corrected 

for position and instrument error. Cali-
brated airspeed is equal to true air-
speed in standard atmosphere at sea 
level. 

Canard  means the forward wing of a 

canard configuration and may be a 
fixed, movable, or variable geometry 
surface, with or without control sur-
faces. 

Canard configuration means a configu-

ration in which the span of the forward 
wing is substantially less than that of 
the main wing. 

Category: 
(1) As used with respect to the cer-

tification, ratings, privileges, and limi-
tations of airmen, means a broad clas-
sification of aircraft. Examples in-
clude: airplane; rotorcraft; glider; and 
lighter-than-air; and 

(2) As used with respect to the cer-

tification of aircraft, means a grouping 
of aircraft based upon intended use or 
operating limitations. Examples in-
clude: transport, normal, utility, acro-
batic, limited, restricted, and provi-
sional. 

Category A, with respect to transport 

category rotorcraft, means multien-
gine rotorcraft designed with engine 
and system isolation features specified 
in Part 29 and utilizing scheduled take-
off and landing operations under a crit-
ical engine failure concept which 
assures adequate designated surface 
area and adequate performance capa-
bility for continued safe flight in the 
event of engine failure. 

Category B, with respect to transport 

category rotorcraft, means single-en-
gine or multiengine rotorcraft which 
do not fully meet all Category A stand-
ards. Category B rotorcraft have no 
guaranteed stay-up ability in the event 
of engine failure and unscheduled land-
ing is assumed. 

Category II operations, with respect to 

the operation of aircraft, means a 
straight-in ILS approach to the runway 
of an airport under a Category II ILS 
instrument approach procedure issued 
by the Administrator or other appro-
priate authority. 

Category III operations, with respect 

to the operation of aircraft, means an 
ILS approach to, and landing on, the 
runway of an airport using a Category 
III ILS instrument approach procedure 

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