15 

Federal Aviation Administration, DOT 

§ 1.1 

(i) The aircraft is operated in accord-

ance with title 10 of the United States 
Code; 

(ii) The aircraft is operated in the 

performance of a governmental func-
tion under title 14, 31, 32, or 50 of the 
United States Code and the aircraft is 
not used for commercial purposes; or 

(iii) The aircraft is chartered to pro-

vide transportation to the armed forces 
and the Secretary of Defense (or the 
Secretary of the department in which 
the Coast Guard is operating) des-
ignates the operation of the aircraft as 
being required in the national interest. 

(3) An aircraft owned or operated by 

the National Guard of a State, the Dis-
trict of Columbia, or any territory or 
possession of the United States, and 
that meets the criteria of paragraph (2) 
of this definition, qualifies as a public 
aircraft only to the extent that it is 
operated under the direct control of 
the Department of Defense. 

Rated 30-second 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 continuation of one 
flight operation after the failure or 
shutdown of one engine in multiengine 
rotorcraft, for up to three periods of 
use no longer than 30 seconds each in 
any one flight, and followed by manda-
tory inspection and prescribed mainte-
nance action. 

Rated 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 continuation of one 
flight operation after the failure or 
shutdown of one engine in multiengine 
rotorcraft, for up to three periods of 
use no longer than 2 minutes each in 
any one flight, and followed by manda-
tory inspection and prescribed mainte-
nance action. 

Rated continuous 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 the 
time required to complete the flight 
after the failure or shutdown of one en-
gine of a multiengine rotorcraft. 

Rated maximum continuous augmented 

thrust, 

with respect to turbojet engine 

type certification, means the approved 
jet thrust that is developed statically 
or in flight, in standard atmosphere at 
a specified altitude, with fluid injec-
tion or with the burning of fuel in a 
separate combustion chamber, within 
the engine operating limitations estab-
lished under Part 33 of this chapter, 
and approved for unrestricted periods 
of use. 

Rated maximum continuous power, 

with respect to reciprocating, turbo-
propeller, and turboshaft engines, 
means the approved brake horsepower 
that is developed statically or in flight, 
in standard atmosphere at a specified 
altitude, within the engine operating 
limitations established under part 33, 
and approved for unrestricted periods 
of use. 

Rated maximum continuous thrust, 

with respect to turbojet engine type 
certification, means the approved jet 
thrust that is developed statically or in 
flight, in standard atmosphere at a 
specified altitude, 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 approved for unrestricted periods 
of use. 

Rated takeoff augmented thrust, 

with 

respect to turbojet engine type certifi-
cation, means the approved jet thrust 
that is developed statically under 
standard sea level conditions, with 
fluid injection or with the burning of 
fuel in a separate combustion chamber, 
within the engine operating limita-
tions established under part 33 of this 
chapter, and limited in use to periods 
of not over 5 minutes for takeoff oper-
ation. 

Rated takeoff power, 

with respect to 

reciprocating, turbopropeller, and tur-
boshaft engine type certification, 
means the approved brake horsepower 
that is developed statically under 
standard sea level conditions, within 

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