494 

14 CFR Ch. I (1–1–19 Edition) 

§ 135.389 

time of arrival, can be brought to a full 
stop landing within 80 percent of the 
effective length of the runway from a 
point 50 feet above the intersection of 
the obstruction clearance plane and 
the runway. 

[Doc. No. FAA–2001–10047, 68 FR 54588, Sept. 
17, 2003] 

§ 135.389

Large nontransport category 

airplanes: Takeoff limitations. 

(a) No person operating a large non-

transport category airplane may take 
off that airplane at a weight greater 
than the weight that would allow the 
airplane to be brought to a safe stop 
within the effective length of the run-
way, from any point during the takeoff 
before reaching 105 percent of min-
imum control speed (the minimum 
speed at which an airplane can be safe-
ly controlled in flight after an engine 
becomes inoperative) or 115 percent of 
the power off stalling speed in the 
takeoff configuration, whichever is 
greater. 

(b) For the purposes of this section— 
(1) It may be assumed that takeoff 

power is used on all engines during the 
acceleration; 

(2) Not more than 50 percent of the 

reported headwind component, or not 
less than 150 percent of the reported 
tailwind component, may be taken into 
account; 

(3) The average runway gradient (the 

difference between the elevations of 
the endpoints of the runway divided by 
the total length) must be considered if 
it is more than one-half of one percent; 

(4) It is assumed that the airplane is 

operating in standard atmosphere; and 

(5) For takeoff, 

effective length of the 

runway 

means the distance from the 

end of the runway at which the takeoff 
is started to a point at which the ob-
struction clearance plane associated 
with the other end of the runway inter-
sects the runway centerline. 

§ 135.391

Large nontransport category 

airplanes: En route limitations: One 
engine inoperative. 

(a) Except as provided in paragraph 

(b) of this section, no person operating 
a large nontransport category airplane 
may take off that airplane at a weight 
that does not allow a rate of climb of 
at least 50 feet a minute, with the crit-

ical engine inoperative, at an altitude 
of at least 1,000 feet above the highest 
obstruction within five miles on each 
side of the intended track, or 5,000 feet, 
whichever is higher. 

(b) Without regard to paragraph (a) 

of this section, if the Administrator 
finds that safe operations are not im-
paired, a person may operate the air-
plane at an altitude that allows the 
airplane, in case of engine failure, to 
clear all obstructions within five miles 
on each side of the intended track by 
1,000 feet. If this procedure is used, the 
rate of descent for the appropriate 
weight and altitude is assumed to be 50 
feet a minute greater than the rate in 
the approved performance data. Before 
approving such a procedure, the Ad-
ministrator considers the following for 
the route, route segement, or area con-
cerned: 

(1) The reliability of wind and weath-

er forecasting. 

(2) The location and kinds of naviga-

tion aids. 

(3) The prevailing weather condi-

tions, particularly the frequency and 
amount of turbulence normally en-
countered. 

(4) Terrain features. 
(5) Air traffic problems. 
(6) Any other operational factors 

that affect the operations. 

(c) For the purposes of this section, it 

is assumed that— 

(1) The critical engine is inoperative; 
(2) The propeller of the inoperative 

engine is in the minimum drag posi-
tion; 

(3) The wing flaps and landing gear 

are in the most favorable position; 

(4) The operating engines are oper-

ating at the maximum continuous 
power available; 

(5) The airplane is operating in stand-

ard atmosphere; and 

(6) The weight of the airplane is pro-

gressively reduced by the anticipated 
consumption of fuel and oil. 

§ 135.393

Large nontransport category 

airplanes: Landing limitations: Des-
tination airports. 

(a) No person operating a large non-

transport category airplane may take 
off that airplane at a weight that— 

(1) Allowing for anticipated consump-

tion of fuel and oil, is greater than the 

VerDate Sep<11>2014 

08:20 May 17, 2019

Jkt 247048

PO 00000

Frm 00504

Fmt 8010

Sfmt 8002

Y:\SGML\247048.XXX

247048