490 

14 CFR Ch. I (1–1–19 Edition) 

§ 135.379 

§ 135.379

Large transport category air-

planes: Turbine engine powered: 
Takeoff limitations. 

(a) No person operating a turbine en-

gine powered large transport category 
airplane may take off that airplane at 
a weight greater than that listed in the 
Airplane Flight Manual for the ele-
vation of the airport and for the ambi-
ent temperature existing at take- off. 

(b) No person operating a turbine en-

gine powered large transport category 
airplane certificated after August 26, 
1957, but before August 30, 1959 (SR422, 
422A), may take off that airplane at a 
weight greater than that listed in the 
Airplane Flight Manual for the min-
imum distance required for takeoff. In 
the case of an airplane certificated 
after September 30, 1958 (SR422A, 422B), 
the takeoff distance may include a 
clearway distance but the clearway dis-
tance included may not be greater than 
one-half of the takeoff run. 

(c) No person operating a turbine en-

gine powered large transport category 
airplane certificated after August 29, 
1959 (SR422B), may take off that air-
plane at a weight greater than that 
listed in the Airplane Flight Manual at 
which compliance with the following 
may be shown: 

(1) The accelerate-stop distance, as 

defined in § 25.109 of this chapter, must 
not exceed the length of the runway 
plus the length of any stopway. 

(2) The takeoff distance must not ex-

ceed the length of the runway plus the 
length of any clearway except that the 
length of any clearway included must 
not be greater than one-half the length 
of the runway. 

(3) The takeoff run must not be 

greater than the length of the runway. 

(d) No person operating a turbine en-

gine powered large transport category 
airplane may take off that airplane at 
a weight greater than that listed in the 
Airplane Flight Manual— 

(1) For an airplane certificated after 

August 26, 1957, but before October 1, 
1958 (SR422), that allows a takeoff path 
that clears all obstacles either by at 
least (35 + 0.01 D) feet vertically (D is 
the distance along the intended flight 
path from the end of the runway in 
feet), or by at least 200 feet hori-
zontally within the airport boundaries 

and by at least 300 feet horizontally 
after passing the boundaries; or 

(2) For an airplane certificated after 

September 30, 1958 (SR422A, 422B), that 
allows a net takeoff flight path that 
clears all obstacles either by a height 
of at least 35 feet vertically, or by at 
least 200 feet horizontally within the 
airport boundaries and by at least 300 
feet horizontally after passing the 
boundaries. 

(e) In determining maximum 

weights, minimum distances, and flight 
paths under paragraphs (a) through (d) 
of this section, correction must be 
made for the runway to be used, the 
elevation of the airport, the effective 
runway gradient, the ambient tempera-
ture and wind component at the time 
of takeoff, and, if operating limitations 
exist for the minimum distances re-
quired for takeoff from wet runways, 
the runway surface condition (dry or 
wet). Wet runway distances associated 
with grooved or porous friction course 
runways, if provided in the Airplane 
Flight Manual, may be used only for 
runways that are grooved or treated 
with a porous friction course (PFC) 
overlay, and that the operator deter-
mines are designed, constructed, and 
maintained in a manner acceptable to 
the Administrator. 

(f) For the purposes of this section, it 

is assumed that the airplane is not 
banked before reaching a height of 50 
feet, as shown by the takeoff path or 
net takeoff flight path data (as appro-
priate) in the Airplane Flight Manual, 
and after that the maximum bank is 
not more than 15 degrees. 

(g) For the purposes of this section, 

the terms, 

takeoff distance, takeoff run, 

net takeoff flight path, 

have the same 

meanings as set forth in the rules 
under which the airplane was certifi-
cated. 

[Doc. No. 16097, 43 FR 46783, Oct. 10, 1978, as 
amended by Amdt. 135–71, 63 FR 8321, Feb. 18, 
1998] 

§ 135.381

Large transport category air-

planes: Turbine engine powered: En 
route limitations: One engine inop-
erative. 

(a) No person operating a turbine en-

gine powered large transport category 
airplane may take off that airplane at 

VerDate Sep<11>2014 

08:20 May 17, 2019

Jkt 247048

PO 00000

Frm 00500

Fmt 8010

Sfmt 8002

Y:\SGML\247048.XXX

247048