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16 

14 CFR Ch. I (1–1–18 Edition) 

§ 1.1 

the engine operating limitations estab-
lished under part 33, and limited in use 
to periods of not over 5 minutes for 
takeoff operation. 

Rated takeoff thrust, with respect to 

turbojet engine type certification, 
means the approved jet thrust that is 
developed statically under standard sea 
level conditions, without fluid injec-
tion and without the burning of fuel in 
a separate combustion chamber, within 
the engine operating limitations estab-
lished under part 33 of this chapter, 
and limited in use to periods of not 
over 5 minutes for takeoff operation. 

Rated 30-minute OEI power, with re-

spect to rotorcraft turbine engines, 
means the approved brake horsepower 
developed under static conditions at 
specified altitudes and temperatures 
within the operating limitations estab-
lished for the engine under part 33 of 
this chapter, and limited in use to one 
period of use no longer than 30 minutes 
after the failure or shutdown of one en-
gine of a multiengine rotorcraft. 

Rated 2

1

2

-minute OEI power, with re-

spect to rotorcraft turbine engines, 
means the approved brake horsepower 
developed under static conditions at 
specified altitudes and temperatures 
within the operating limitations estab-
lished for the engine under part 33 of 
this chapter for periods of use no 
longer than 2

1

2

minutes each after the 

failure or shutdown of one engine of a 
multiengine rotorcraft. 

Rating  means a statement that, as a 

part of a certificate, sets forth special 
conditions, privileges, or limitations. 

Reference landing speed means the 

speed of the airplane, in a specified 
landing configuration, at the point 
where it descends through the 50 foot 
height in the determination of the 
landing distance. 

Reporting point means a geographical 

location in relation to which the posi-
tion of an aircraft is reported. 

Restricted area. A restricted area is 

airspace designated under Part 73 with-
in which the flight of aircraft, while 
not wholly prohibited, is subject to re-
striction. 

Rocket means an aircraft propelled by 

ejected expanding gases generated in 
the engine from self-contained propel-
lants and not dependent on the intake 
of outside substances. It includes any 

part which becomes separated during 
the operation. 

Rotorcraft  means a heavier-than-air 

aircraft that depends principally for its 
support in flight on the lift generated 
by one or more rotors. 

Rotorcraft-load combination means the 

combination of a rotorcraft and an ex-
ternal-load, including the external-load 
attaching means. Rotorcraft-load com-
binations are designated as Class A, 
Class B, Class C, and Class D, as fol-
lows: 

(1)  Class A rotorcraft-load combination 

means one in which the external load 
cannot move freely, cannot be jetti-
soned, and does not extend below the 
landing gear. 

(2)  Class B rotorcraft-load combination 

means one in which the external load is 
jettisonable and is lifted free of land or 
water during the rotorcraft operation. 

(3)  Class C rotorcraft-load combination 

means one in which the external load is 
jettisonable and remains in contact 
with land or water during the rotor-
craft operation. 

(4)  Class D rotorcraft-load combination 

means one in which the external-load 
is other than a Class A, B, or C and has 
been specifically approved by the Ad-
ministrator for that operation. 

Route segment is a portion of a route 

bounded on each end by a fix or naviga-
tion aid (NAVAID). 

Sea level engine means a reciprocating 

aircraft engine having a rated takeoff 
power that is producible only at sea 
level. 

Second in command means a pilot who 

is designated to be second in command 
of an aircraft during flight time. 

Show,  unless the context otherwise 

requires, means to show to the satis-
faction of the Administrator. 

Small aircraft means aircraft of 12,500 

pounds or less, maximum certificated 
takeoff weight. 

Small unmanned aircraft means an un-

manned aircraft weighing less than 55 
pounds on takeoff, including every-
thing that is on board or otherwise at-
tached to the aircraft. 

Small unmanned aircraft system (small 

UAS) means a small unmanned aircraft 
and its associated elements (including 
communication links and the compo-
nents that control the small unmanned 
aircraft) that are required for the safe 

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