492 

14 CFR Ch. I (1–1–19 Edition) 

§ 135.385 

(1) There is no place along the in-

tended track that is more than 90 min-
utes (with all engines operating at 
cruising power) from an airport that 
meets § 135.387. 

(2) Its weight, according to the two- 

engine-inoperative, en route, net flight 
path data in the Airplane Flight Man-
ual allows the airplane to fly from the 
point where the two engines are as-
sumed to fail simultaneously to an air-
port that meets § 135.387 with a net 
flight path (considering the ambient 
temperatures anticipated along the 
track) having a positive slope at an al-
titude of at least 1,000 feet above all 
terrain and obstructions within five 
statute miles on each side of the in-
tended track, or at an altitude of 2,000 
feet, whichever is higher. 

For the purpose of paragraph (b)(2) of 
this section, it is assumed that the two 
engines fail at the most critical point 
en route, that the airplane’s weight at 
the point where the engines fail in-
cludes enough fuel to continue to the 
airport, to arrive at an altitude of at 
least 1,500 feet directly over the air-
port, and after that to fly for 15 min-
utes at cruise power or thrust, or both, 
and that the consumption of fuel and 
oil after engine failure is the same as 
the consumption allowed for in the net 
flight path data in the Airplane Flight 
Manual. 

(c) Aircraft certificated after August 

29, 1959 (SR422B). No person may oper-
ate a turbine engine powered large 
transport category airplane along an 
intended route unless that person com-
plies with either of the following: 

(1) There is no place along the in-

tended track that is more than 90 min-
utes (with all engines operating at 
cruising power) from an airport that 
meets § 135.387. 

(2) Its weight, according to the two- 

engine-inoperative, en route, net flight 
path data in the Airplane Flight Man-
ual, allows the airplane to fly from the 
point where the two engines are as-
sumed to fail simultaneously to an air-
port that meets § 135.387, with the net 
flight path (considering the ambient 
temperatures anticipated along the 
track) clearing vertically by at least 
2,000 feet all terrain and obstructions 
within five statute miles on each side 

of the intended track. For the purposes 
of this paragraph, it is assumed that— 

(i) The two engines fail at the most 

critical point en route; 

(ii) The net flight path has a positive 

slope at 1,500 feet above the airport 
where the landing is assumed to be 
made after the engines fail; 

(iii) Fuel jettisoning will be approved 

if the certificate holder shows that the 
crew is properly instructed, that the 
training program is adequate, and that 
all other precautions are taken to en-
sure a safe procedure; 

(iv) The airplane’s weight at the 

point where the two engines are as-
sumed to fail provides enough fuel to 
continue to the airport, to arrive at an 
altitude of at least 1,500 feet directly 
over the airport, and after that to fly 
for 15 minutes at cruise power or 
thrust, or both; and 

(v) The consumption of fuel and oil 

after the engines fail is the same as the 
consumption that is allowed for in the 
net flight path data in the Airplane 
Flight Manual. 

§ 135.385

Large transport category air-

planes: Turbine engine powered: 
Landing limitations: Destination 
airports. 

(a) No person operating a turbine en-

gine powered large transport category 
airplane may take off that airplane at 
a weight that (allowing for normal con-
sumption of fuel and oil in flight to the 
destination or alternate airport) the 
weight of the airplane on arrival would 
exceed the landing weight in the Air-
plane Flight Manual for the elevation 
of the destination or alternate airport 
and the ambient temperature antici-
pated at the time of landing. 

(b) Except as provided in paragraph 

(c), (d), (e), or (f) of this section, no per-
son operating a turbine engine powered 
large transport category airplane may 
take off that airplane unless its weight 
on arrival, allowing for normal con-
sumption of fuel and oil in flight (in 
accordance with the landing distance 
in the Airplane Flight Manual for the 
elevation of the destination airport and 
the wind conditions expected there at 
the time of landing), would allow a full 
stop landing at the intended destina-
tion airport within 60 percent of the ef-
fective length of each runway described 

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